Entries |
Document | Title | Date |
20080219661 | Digital cros-connect - A digital cross-connect (DXC) ( | 09-11-2008 |
20080253767 | Method and System for Hitless Tunable Optical Processing - A method for switching from a first optical path optically coupled to an optical processing device to a second optical path, the first and second optical paths optically connecting, in parallel configuration, a first optical switch to a second optical switch, according to the following steps: directing optical radiation comprising at least a fast operating wavelength through the first optical path to the optical processing device, which is tuned to the first operating wavelength; tuning a resonant all-pass filter optically coupled to the second optical path so as to match, at least at a wavelength adjacent to the first operating wavelength, a phase distortion introduced by the optical processing device on the optical radiation; synchronously actuating the first and the second optical switch so as to switch the optical radiation from the first optical path to the second optical path. | 10-16-2008 |
20080260382 | RING TRANSMISSION APPARATUS AND SIGNAL PROCESSING METHOD - On an optical ring network side, an optical ring transmission apparatus is provided with a first ring-side TDM device and a separately implemented first packet ring device, on a first ring side. On a client network side, the apparatus is provided with a first client-side TDM device and a first packet transceiver, which are implemented separately from the devices on the optical ring network side. The devices on the client network side can be connected to the devices on the optical ring network side through a switch section including a packet switch and a TDM switch. Further, the apparatus has a dual configuration with the provision of devices that pair up with the above-mentioned devices, such as a second packet ring device. The flexibility can be ensured by the redundant configuration and the independent implementation of the devices as described above. | 10-23-2008 |
20080279552 | Methods of placing reconfigurable optical add/drop multiplexers (ROADMS) in a network - A distributed network including at least two Reconfigurable Optical Add/Drop Multiplexers (ROADMs) may be designed by a method including simulating routing of data traffic in a distributed network. The method may also include identifying a first location for placement of a first ROADM based at least partially on the simulated routing of the data traffic. The method may also include simulating rerouting of data traffic in the distributed network including the first ROADM at the first location. The method may further include identifying a second location for placement of a second ROADM based at least partially on the simulated rerouting of the data traffic. | 11-13-2008 |
20080285971 | SWITCH FOR OPTICAL INTERCONNECTION NETWORKS - The described subject matter concerns efficient routing of data in an optical network. An optical switching element utilizes a noise reduction circuit to eliminate glitches in the optical signal, and thereby enable highly scalable, cascadeable switching networks to be constructed. The current driver is directly bonded to the SOA to reduce delays ordinarily associated with data transfer through packaging pins. | 11-20-2008 |
20080298804 | TUNING SELECT FIBER OPTIC CHANNELS FOR CHANNEL MONITORING - A tunable element of a tuning module is receptive to optical data channels of a multiplexed optical data signal, each optical data channel having a different respective wavelength. The tunable element is responsive to different stimuli such that multiple passbands of the tunable element are defined, each passband corresponding to a respective stimulus and including no more than one wavelength of the optical data channels. An optical detector communicates with the tunable element and is receptive to no more than one optical data channel from the tunable element at any given time, an output of the optical detector is an electrical data signal that corresponds to the optical data channel received by the optical detector from the tunable element. A controller communicates with the tunable element and tunes the tunable element from one optical data channel to the other by causing application of a corresponding stimulus to the tunable element. | 12-04-2008 |
20080310839 | Distributed Packet Switch for Use in a Network - A distributed packet switch to control data packet flows in a network is described. The distributed packet switch includes a means for operating over an asynchronous burst optical closed fiber medium. The distributed packet switch also includes at least one control system provided at a node to control data packet flow characteristics, such that the switch is configured to operate dependent on at least one efficiency parameter. | 12-18-2008 |
20090003827 | Optical switching device - An optical switching device the size and costs of which are reduced by decreasing the number of switching elements and which can flexibly accommodate the expansion of the number of ports. An optical demultiplexing section has 2 | 01-01-2009 |
20090028559 | Method and System for Designing a Network - A design of a network is determined to connect a plurality of central offices (COs) to a video hub office (VHO) using a plurality of fiber path pairs, respectively. In the design, each of the fiber path pairs is a lowest-cost, node-disjoint path pair between its respective one of the COs and the VHO independent of a cost of adding new fiber to the network. The design is modified to reduce the cost of adding new fiber to the network by re-routing traffic from at least one of the fiber path pairs to at least one other fiber path pair. | 01-29-2009 |
20090028560 | System and Method for Implementing Dynamic Scheduling of Data in a Non-Blocking All-Optical Switching Network - A non-blocking optical matrix core switching method that includes maintaining a schedule for routing data through an optical matrix core and receiving and analyzing reports from peripheral devices. The method determines whether the schedule is adequate for the current data traffic patterns and if the schedule is not adequate a new schedule is implemented. The new schedule is then transferred to the peripheral devices for implementation and the new schedule is transferred to the optical matrix core scheduler. Implementation of the new schedule as the schedule on the peripheral devices and the optical matrix core scheduler is then performed. | 01-29-2009 |
20090028561 | METHOD, SYSTEM AND NODE DEVICE FOR REALIZING SERVICE PROTECTION IN AUTOMATICALLY SWITCHED OPTICAL NETWORK - A method for realizing service protection in the automatically switched optical network includes following steps: after any defect occurs on the working paths that carry the service, the first node and the last node of the working paths sends the requests to restore the paths setup in opposite directions, respectively; at least one intermediate node in the restoration path establishes a connection according to the restoration path setup request, and forwards the restoration path setup request hop by hop, until the setup of the recovering path is finished; the service is switched from the working paths to the restoration paths. A system for realizing service protection and a node device in an ASON is also provided. The paths restoration process can be faster obviously using this invention, and the restoration time can be shortened, and the work efficiency and reliability can be improved, and the service can be ensured to be restored. | 01-29-2009 |
20090034970 | Optical Switch Controller - An optical switch controller controls an optical interconnection network that variably connects at least one input data channel to a plurality of outputs channels via at least one switching element. An address reader module has at least one semiconductor optical amplifier optically processes an optical signal. The address reader module obtains information by reading a data tag from the input data channel, and outputs an address control signal based on the information. The address control signal can be used to control switching elements in the optical interconnection network. | 02-05-2009 |
20090041457 | Modular WSS-based communications system with colorless add/drop interfaces - Modular WSS-based Communications system with colorless and network-port transparent add/drop interfaces is described herein. According to certain aspects of the invention, equipment architecture is provided that enables a linear, ring, and mesh optical network. The embodiments of the invention are primarily on how to add and drop signals at a node of the network. The embodiments of the invention are based on the use a wavelength selective switch (WSS), which is an emerging component technology. Other methods and apparatuses are also described. | 02-12-2009 |
20090052895 | Optical Node Device, Network Control Device, Maintenance-Staff Device, Optical Network, and 3R Relay Implementation Node Decision Method - An economical optical network is constituted by effectively using network resources by using the minimum number of, or minimum capacity of 3R repeaters. 3R section information corresponding to topology information on the optical network to which an optical node device itself belongs is stored, and the 3R section information stored is referred so as to autonomously determine whether or not the optical node device itself is an optical node device for implementing the 3R relay when setting an optical path passing through the optical node device itself. Alternatively, when the optical node device itself is a source node, another optical node device for implementing the 3R relay among the other optical node devices through which the optical path from the optical node device itself to the destination node passes is identified, and this identified optical node device is requested to implement the 3R relay when setting an optical path in which the optical node device itself is a source node. | 02-26-2009 |
20090060501 | All Optical Batcher Banyan Switch, Batcher Switch, Banyan Switch and Contention Manager - An all-optical contention manager includes at least two inputs and at least two outputs. The outputs are configured to output signals to a Banyan switch. The contention manager detects and resolves routing contentions between incoming optical signals prior to outputting the signals to the Banyan switch. The signals have tags that include routing information. A photonic comparator in the contention manager compares the tags of incoming optical signals in order to detect contention. | 03-05-2009 |
20090060502 | SERVICE HANDOVER METHOD, OPTICAL NETWORK SYSTEM, HANDOVER EQUIPMENT AND PE EQUIPMENT IN AN OVPN - An optical network system disclosed in an embodiment of the present invention contains a PE and a handover equipment located between the PE and a CE. The PE is adapted to provide optical network access for the CE. The handover equipment is adapted to disconnect a CE that finishes working at a handover time, and/or connect a PE with a CE that will work in a next time segment. The present invention also discloses a service handover method of optical networks. Furthermore, the present invention discloses a handover equipment and a PE in an optical network. The present invention can reduce the ports occupied by the PE. | 03-05-2009 |
20090067834 | GMPLS Fast Re-route for OADM and AUX 10Mbps Support - Embodiments of the present invention provide a GMPLS fast re-route of packets within a network using a multicast address and a table comprising a list of alias IP addresses. According to various embodiments of the invention an alternate data path from a source node to a destination node allows a packet to traverse to the destination node without IP forwarding techniques being applied. In other words, a tunneling effect from a source node to a destination node allows other nodes in the network to ignore the packet and only read the multicast address within the header and immediately forward the packet to the destination node. A predetermined set of IP addresses are determined from network topology including all potential paths, for a packet to traverse, to a destination address. | 03-12-2009 |
20090067835 | Method and apparatus for protection switching in passive optical network - Systems and methods for performing protection switching in a passive optical network are provided. When a fiber cut is detected, control and management plane applications are not immediately informed. A rapid re-registration procedure is instigated upon detection of a fiber cut event. This allows multiple optical network units to re-register quickly without restarting control and management applications. | 03-12-2009 |
20090074408 | Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost - A switch, switched architecture and process for transferring data through an FCAL switch is disclosed. The switch uses multiple switch control circuits each coupled to one FCAL network and all connected to a crossbar switch. The switch control circuits are coupled together by a protocol bus for coordination purposes. Local conversations can occur on each FCAL loop and crossing conversations through the switch can occur concurrently. The OPN primitive us used to establish the connection before any data is transferred thereby eliminating the need for buffer memory in the switch control circuits. The destination address of each OPN is used to address a lookup table in each switch control circuit to determine if the destination node is local. If not, the destination is looked up and a connection request made on the protocol bus. If the remote port is not busy, it sends a reply which causes both ports to establish a data path through the backplane crossbar switch. | 03-19-2009 |
20090080884 | Hybrid fiber twisted pair local loop network service architecture - A new architecture capable of utilizing the existing twisted pair interface between customer premises equipment and an associated serving local switching office is used to provide a vast array of new services to customers. Using an intelligent services director (ISD) at the customer services equipment as an interface for the equipment to an existing twisted cable pair and a facilities management platform (FMP) at the serving local switching office as an interface to various networks and service opportunities, new services such as simultaneous, multiple calls (voice analog or digital), facsimile, Internet traffic and other data can be transmitted and received over the twisted cable pair by using digital subscriber loop transmission schemes. The new services include but are not limited to videophone, utility meter reading and monitoring, broadcasting and multicasting. The architecture provides for fault-tolerant, transparent interaction of components and services and supports a variety of standards for each level of the open systems interconnection layers and layers of TCP/IP. The FMP connects electronically or optically to the public switched telephone network, Internet backbone, a private Intranet as well as other possible network connections. | 03-26-2009 |
20090087180 | WAVELENGTH ASSIGNMENT OPTIMIZATION - A method may include inputting parameters that characterize an optical network, inputting one or more demands to be routed, selecting routes, wavelengths, and wavelength translation nodes simultaneously for the one or more demands of the optical network based on the parameters, where each demand includes a working path and one or more protect paths, and configuring the optical network based on the selected routes, wavelengths, and wavelength translation nodes associated with the one or more demands. | 04-02-2009 |
20090103918 | Communication System Using Passive Optical Network and Passive Optical Network - An OLT transmits and receives a CMTS/CM apparatus control signal through an apparatus physical management interface which is physically identical to or different from a main signal interface (NNI) and processes the CMTS apparatus control signal by itself. When connection of a new ONU is detected by an ONU apparatus control signal, an IP address is allocated by using the CM apparatus control signal in a manner similar to the CM. The CM apparatus control signal regarding the ONU is transmitted and received by using the IP address and a mutual conversion is performed between the CM apparatus control signal and the ONU apparatus control signal. The ONU processes the ONU apparatus control signal in a manner similar to the ONU based on an ordinary PON standard. | 04-23-2009 |
20090110393 | BROADBAND WAVELENGTH MULTIPLEXING AND DEMULTIPLEXING FILTER AND OPTICAL SPLITTER WITH OPTICAL SIGNAL MULTIPLEXING AND DEMULTIPLEXING FUNCTION - Two Mach-Zehnder optical interferometer circuits | 04-30-2009 |
20090110394 | 1+1 PROTECTION METHOD OF SERVICES IN OBS NETWORKS, INTERSECTION NODE APPARATUS AND SERVICE PROTECTION SYSTEM - A 1+1 protection method of service in optical burst switching (OBS) networks, an intersection node apparatus, and protection system of service are provided. The method discloses that burst packets bearing service are transferred through two risk-independent routes, and each burst packet corresponds to a control packet. The intersection node receives a first control packet transferred through either route with a sequence number, and then, when it continues to receive the second control packet, which is transferred through the other route with the same sequence number as the first control packet carries within the waiting time of the first control packet, the intersection node selects the burst packet corresponding to the control packet with a smaller quality loss field value of the first and second control packets. The present invention prevents the services from being cut down, and remarkably reduces the packet loss ratio of the service. | 04-30-2009 |
20090123151 | Adaptive ONT for a PON Network - A method for recognizing and adapting to a change in a passive optical network (PON) format by an optical network terminal (ONT) in communication with an optical line terminal (OLT) over the PON includes pre-loading a plurality of transmission formats and content formats into an individual ONT. The method also includes automatically identifying at the ONT a transmission format of a downstream signal transmitted over a PON from an OLT to the ONT corresponding to at least one of the preloaded transmission formats. The method further includes automatically identifying at the ONT a content format of the downstream signal corresponding to at least one of the preloaded content formats and automatically adapting the ONT to recover information from the downstream signal according to the identified transmission format and the identified content format. | 05-14-2009 |
20090123152 | OPTICAL SWITCHING DEVICE AND OPTICAL RECEIVER - The invention is an optical switching device and optical receiver having a simpler configuration and capable of short range communication with a larger communication band than those of the prior art. The invention comprises a plurality of nodes and an optical switching device. Each node has an optical receiver and an optical transmitter. The optical switching device switches optical signals entering via incident ports from nodes, thereby sending them from sending ports. The device has an optical distributor and a functional optical combiner. The distributor distributes a common optical signal into all outgoing optical transmission lines. The combiner partially transmits each individual optical signal entering from a node to one or more outgoing optical transmission lines. The optical receiver has a beam splitter, a first optical detector, and a second optical detector. The beam splitter splits its incident optical signal into the individual optical signal and the common optical signal. | 05-14-2009 |
20090129774 | Distributed Terminal Optical Transmission System - Optical signals generated from customer premise equipment (CPE) at the edges of the metro domain networks are facilitated. The CPEs connect to extension terminals that transform the optical signal originating at the CPE into a format for long haul transmission. The optical signal then propagates to a primary terminal where the signal is multiplexed with other optical signals from other extension terminals. The multiplexed signals are then transmitted to a second primary terminal. The signal is then demultiplexed from other optical signals and transmitted to the proper extension terminal. At the extension terminal, the demultiplexed optical signal is transformed from its LH format back into a format suitable for inter-connection to a CPE. The signal undergoes optical-to-electrical conversion only at the extension terminals or end points, which can be located at lessee's facility. The only equipment located in lessor's facility is the primary terminal containing line amplifiers and add/drop nodes. | 05-21-2009 |
20090142055 | Control device and a method for controlling an optical data transmission, and a shared storage network system - A control device for controlling the optical data transmission in an optical burst switching mode between a source computer and a destination computer, the control device being connected to the source computer and to the destination computer and being adapted such that in case of a burst to be transmitted from the source computer to the destination computer, the length of the burst is determined based on a parameter indicating an available buffer size of the destination computer, and a predetermined timeout value parameter indicating a time after which improper burst transmission is assumed to have been occurred. After the burst length is determined and the traffic starts to be accumulated, a proposed burst reservation and transmission scheme, namely random burst eligibility time method, is used to deliver the burst. | 06-04-2009 |
20090162058 | FIBRE CHANNEL FABRIC AND SWITCHES WITH FLEXIBLE PREFIX ADDRESSING - A way to assign flexible prefixes to Switches in Fibre Channel Fabrics while using the currently defined FC_ID address space. This allows end devices in different Fibre Channel Fabrics to communicate with one another, without requiring modifications to existing end devices, nor to perform Network Address Translation between Fabrics. The existing address space for each Switch includes a dynamically configurable number of host bits sufficient to address all the end devices coupled to the Switch and the Switch itself. The remaining bits, called the Switch prefix, are used to identify the Switch in the switching Fabric. In an alternative embodiment, the Switch prefix bits may be further configured into a first sub-set of bits used to identify a specific Fabric (Fabric prefix) and a second sub-set of bits used to identify the Switch in the Fabric (Switch_ID). The flexible addressing scheme enables end devices in different Fabrics to communicate with one another without expanding the Fibre Channel address space or the need to perform Network Address Translations. | 06-25-2009 |
20090169205 | OPTICAL NETWORK - An optical network is disclosed comprising one or more photonic switching nodes is disclosed. Each of the switching nodes comprises a plurality of input ports; at least one output port; and a switch configured to route messages between the plurality of input ports and the at least one output port and provide bufferless resolution of contention between messages for a common output port. | 07-02-2009 |
20090196606 | OPTICAL ACCESS NETWORK AND OPTICAL SWITCHING SYSTEMS - An optical access network and optical switching systems requiring no frame delay process on an optical switchboard are disclosed. Plural ONUs are connected to user terminals. An OLT communicates with an IP network through an access gateway. An optical switching unit (OSW) connects the ONUs and the OLT by switching the optical line. A control line connects the OLT and the OSW to control the optical switch change-over operation in the OSW. The optical switch port information required to generate the optical switch activation signal are concentrated in the OLT, which transmits the optical switch change-over control signal to the OSW through the control line before the transmission frame. | 08-06-2009 |
20090196607 | OPTICAL PACKET SWITCHING APPARATUS AND OPTICAL PACKET SWITCHING METHOD - An apparatus has a plurality of transmitters for transmitting optical packet signals having wavelengths; a multiplexer for multiplexing the optical packet signals transmitted by the plurality of transmitters; a packet scheduler controlling a timing at which each of the transmitters transmits the optical packet signal; and an assister for controlling power of assist light in accordance with a signal from the packet scheduler and causing the assist light to be wavelength-multiplexed with the wavelength multiplexed light such that a total sum of power of the wavelength multiplexed light and the power of the assist light is held constant under a predetermined condition. | 08-06-2009 |
20090196608 | OPTICAL NODE DEVICE, NETWORK CONTROL DEVICE, MAINTENANCE-STAFF DEVICE, OPTICAL NETWORK, AND 3R RELAY IMPLEMENTATION NODE DECISION METHOD - An economical optical network is constituted by effectively using network resources by using the minimum number of, or minimum capacity of 3R repeaters. 3R section information corresponding to topology information on the optical network to which an optical node device itself belongs is stored, and the 3R section information stored is referred so as to autonomously determine whether or not the optical node device itself is an optical node device for implementing the 3R relay when setting an optical path passing through the optical node device itself. Alternatively, when the optical node device itself is a source node, another optical node device for implementing the 3R relay among the other optical node devices through which the optical path from the optical node device itself to the destination node passes is identified, and this identified optical node device is requested to implement the 3R relay when setting an optical path in which the optical node device itself is a source node. | 08-06-2009 |
20090202240 | SYSTEMS AND METHODS FOR PARALLEL MULTI-CORE CONTROL PLANE PROCESSING - The present invention provides systems and methods for parallel multi-core control plane processing with optical networks. This enables optical switches utilizing control planes, such as G.ASON, to meet scalability and performance requirements of evolving networks. The multi-core processing is configured to handle call control for sub-network connections (SNCs) (e.g., requests for creates, failures, restores, routing). Additional control plane functions, such as signaling and related interfaces, routing connection admission control (CAC), naming and addressing, and the like, can also be processed in parallel. | 08-13-2009 |
20090208206 | SYSTEMS AND METHODS FOR PRIVATE NETWORK-TO-NETWORK INTERFACE OUT-OF-BAND SIGNALING AND PATH BLOCKING - The present invention provides systems and methods to mix In-Band (IB) and Out-of-Band (OOB) signaling mechanisms under the Private Network-to-Network (PNNI) protocol for optical control plane connectivity. The present invention provides mechanisms for establishing and controlling OOB control plane communications. By default, the mechanisms treat all links as IB to discover nodes and links using IB mechanisms. For any blocked links, the link can be configured as OOB if there is a data communication network (DCN) connection to the remote node | 08-20-2009 |
20090208207 | System, method and computer readable medium for providing dual rate transmission on a gigabit passive optical network - In a dual rate gigabit passive optical network, an optical line termination (OLT) transmits a first rate (GPON) message frame interleaved with a second rate (NGPON) message frame. An unused ATM partition of the GPON message frame is provided with a header and payload portion of the NGPON message frame so that the message frame remains at a predetermined length required by the network. | 08-20-2009 |
20090208208 | METHOD, APPARATUS AND SYSTEM FOR TRANSMITTING ETHERNET SIGNALS IN OPTICAL TRANSPORT NETWORK - A method, apparatus and system for transmitting Ethernet signals in an OTN are provided. The method may include: mapping the Ethernet signals to timeslot units, where a VCG composed of multiple OPUs is divided into the timeslot units; mapping the Ethernet signals into the OPUs, and then mapped into OTUs and output to the OTN for transmitting. In this way, the Ethernet signals may be transmitted in the OTN transparently. The apparatus may further include: a first adaptation protocol frame mapping module, a first virtual concatenation module, and a first line terminal module, which convert the Ethernet signals to the OTUs. The system may include a first adaptation protocol frame mapping module, a second adaptation protocol frame mapping module, a first virtual concatenation module, a second virtual concatenation module, a first line terminal module, and a second line terminal module, which convert the Ethernet signals to the OTUs and vice versa. | 08-20-2009 |
20090226167 | METHOD OF UPGRADING OPTICAL NODE, AND AN OPTICAL NODE APPARATUS - An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost. | 09-10-2009 |
20090238564 | PROTECTION DEVICE FOR REMOVING SIGNAL INTERFERENCE IN A PASSIVE OPTICAL NETWORK - The invention relates to a protection device for removing signal interference in a passive optical network, in which a central optical cable ( | 09-24-2009 |
20090245791 | Method and System for Fibre Channel and Ethernet Interworking - Certain aspects of a method and system for Fibre Channel and Ethernet interworking may include receiving by a central processing unit (CPU), one or more requests for discovery of one or more Fibre Channel (FC) switches based on a Fibre Channel initialization protocol (FIP). The CPU may be operable to facilitate, via a network switch, a proxy login into the one or more FC switches based on the FIP for one or more servers. The one or more servers may be operable to directly communicate and/or receive packets to/from the FC switches via the network switch. The network switch may be operable to determine a destination address of one or more servers based on the facilitated proxy login by the CPU if the one or more servers utilize fabric provided MAC addresses (FPMA) or utilize a MAC address table if the one or more servers utilize server provided MAC addresses (SPMA). | 10-01-2009 |
20090263128 | FIBER OPTIC MULTIPLEX MODEM - A fire alarm network fiber optic multiplex modem includes plural local interfaces, a fiber optic interface, a multiplexor, a fiber optic modem, and a demultiplexor. The multiplexor combines data received at the local interfaces into an outgoing data stream. The fiber optic modem transmits, at a first wavelength, the outgoing data stream to the fiber optic interface and receives, at a second wavelength, an incoming data stream via the fiber optic interface. The demultiplexor separates the incoming data stream into separate data streams, and forwards each of the separate data streams to its corresponding local interface. | 10-22-2009 |
20090290871 | SIGNAL-LIGHT IDENTIFYING APPARATUS, WDM TRANSCEIVER, AND METHOD OF IDENTIFYING SIGNAL LIGHT - Spectral components of input signal light is partially removed by allowing the input signal light regulated to predetermined power to pass through an optical filter, and the rate of the input signal light is identified in response to the power of the signal light passing through the optical filter. | 11-26-2009 |
20090290872 | Broadband optical network apparatus and method - Methods and apparatus for providing enhanced optical networking service and performance which are particularly advantageous in terms of low cost and use of existing infrastructure, access control techniques, and components. In the exemplary embodiment, current widespread deployment and associated low cost of Ethernet-based systems are leveraged through use of an Ethernet CSMA/CD MAC in the optical domain on a passive optical network (PON) system. Additionally, local networking services are optionally provided to the network units on the PON since each local receiver can receive signals from all other users. An improved symmetric coupler arrangement provides the foregoing functionality at low cost. The improved system architecture also allows for fiber failure protection which is readily implemented at low cost and with minimal modification. | 11-26-2009 |
20090297145 | Trustworthy optomechanical switch - A switch having two apertured plates one of which is movable relative to the other to occupy spaced switch positions, the apertures being arranged in the plates so that in each switch position two or more pairs of apertures are aligned and all others are masked, wherein light transmitted through a selected one of the two or more aligned aperture pairs in a particular switch position is visible through an external switch position indicating window to thereby provide an unambiguous indication that the movable plate is positively registered in the particular switch position. | 12-03-2009 |
20090297146 | MULTIPLE CORE SYSTEM - An integrated circuit has a group of cores that communicate with a packet switch using carrierless ultra wideband (UWB) radio frequency (RF) signaling. The packet switch communicates outside the integrated circuit using optical signaling. The carrierless UWB provides for high frequency communication and processing without requiring additional space for interconnects. No special paths are necessary because the signals used by the cores for communicating with the packet switch are RF signals therefore they can be broadcast by the packet switch and be received by a plurality of cores. No conductor line or waveguide is required. Because the signals are carrierless, they can be transmitted with low power. With multiple cores providing information to the switch, the total information being received may exceed the capacity of the RF bandwidth so an external optical interface is provided to multiplex information provided via carrierless UWB RF signals by a plurality of cores. | 12-03-2009 |
20090297147 | Drive circuit and optical switch - A drive circuit includes a first transistor that is controlled to be in on or off state in response to a control signal, and outputs, in on state, a positive current which is input from a first operational amplifier connected with a drain of the first transistor to a semiconductor optical amplifier; and a second transistor that is connected with a source of the first transistor, and is in inverse on or off state to the state of the first transistor. The drive circuit also includes a negative voltage circuit that is connected to a source of the second transistor, and outputs, when the second transistor is in on state, a negative current to the semiconductor optical amplifier. | 12-03-2009 |
20100014858 | Reduction Of Packet Loss Through Optical Layer Protection - Packet loss in an optical network transporting Ethernet-based data traffic is reduced using a switch in a transmitting node. When the transmitting node of the optical network detects a fault in an optical link, the switch buffers incoming data traffic until the optical link is reestablished. The switch may be an Ethernet switch that re-routes data traffic along one or more additional optical fibers that are connected in parallel with a defunct optical fiber to reestablish the optical link between two nodes. The switch may also be an optical switch that is configured to re-route optical data traffic from a defunct optical fiber to a redundant optical fiber. | 01-21-2010 |
20100021160 | OPTICAL ACCESS SYSTEM, OPTICAL SWITCHING UNIT AND OPTICAL LINE TERMINAL - Provided is an optical access system, including: an optical line terminal, a plurality of optical network units and an optical switching unit. The optical line terminal sends to the optical switching unit a control frame including a switching time when the optical switching unit is to make a switch from one of the optical communication paths between the optical line terminal and the plurality of optical network units to another, and an identifier of an optical communication path to which the switch is made in order to switch the optical communication paths between the optical line terminal and the plurality of optical network units. The optical switching unit switches the optical communication paths between the optical line terminal and the plurality of optical network units based on the switching time and the identifier of the optical communication path after switching which are included in the control frame. | 01-28-2010 |
20100021161 | PON SYSTEM - Disclosed herewith is a PON system and a bandwidth controlling method capable of controlling congestion with use of an upstream bandwidth in a PON section efficiently when congestion occurs in a gateway (GW) connected to an OLT. An OLT connected to a plurality of ONUs through a passive optical network (PON) and to a gateway (GW) through a communication line, when receiving a congestion occurrence notice indicating a congestion occurred output number from a GW, identifies the identifier of the ONU that is using a GW output line having the congestion output port number and shifts the bandwidth controlling of the PON section in a normal mode for allocating a bandwidth to each ONU normally to that in a bandwidth suppression mode for allocating a congestion time allowable bandwidth that is less than the current bandwidth to the ONU having the identified ONU identifier and a bandwidth to each of other ONUs according to its transmission queue length. | 01-28-2010 |
20100034536 | Apparatus And Method For Medium Access Control In An Optical Packet-Switched Network And The Network Thereof - Disclosed is an apparatus and method for medium access control (MAC) in an optical packet-switched network. The MAC apparatus may comprise a bandwidth allocation module and an MAC processor. The bandwidth allocation module determines a data transmission limit based on a probabilistic quota plus credit mechanism for each node of the network, dynamically informs all downstream nodes of unused quota and allows the downstream nodes use remaining bandwidths of the upstream node. Through a control message carried by a control channel, the MAC processor determines uploading, downloading and data erasing for a plurality of data channels, and updates the corresponding contents in the control message. | 02-11-2010 |
20100040367 | OPTICAL NODE DEVICE, NETWORK CONTROL DEVICE, MAINTENANCE-STAFF DEVICE, OPTICAL NETWORK, AND 3R RELAY IMPLEMENTATION NODE DECISION METHOD - An economical optical network is constituted by effectively using network resources by using the minimum number of, or minimum capacity of 3R repeaters. 3R section information corresponding to topology information on the optical network to which an optical node device itself belongs is stored, and the 3R section information stored is referred so as to autonomously determine whether or not the optical node device itself is an optical node device for implementing the 3R relay when setting an optical path passing through the optical node device itself. Alternatively, when the optical node device itself is a source node, another optical node device for implementing the 3R relay among the other optical node devices through which the optical path from the optical node device itself to the destination node passes is identified, and this identified optical node device is requested to implement the 3R relay when setting an optical path in which the optical node device itself is a source node. | 02-18-2010 |
20100054736 | UNITED ROUTE QUERY METHOD IN THE AUTOMATIC SWITCHED OPTICAL NETWORK - A joint route query method in ASON. After the route controller in each route domain has received a route query request, it calls a routing algorithm based on the request and the route calculation is performed based on the route database of the current node; if the route calculation succeeds, a route query result is returned to the requester, if no complete route can be obtained, said route query request will be forwarded to the RC in the parent domain. Based on the request, the RC in the parent domain interacts with RCs in other domain of the same layer, and the RCs in the sub-domains contained in the parent domain to complete the route query, and calculates to obtain a complete route, then a route query result will be returned to the RC that initiates the request and this RC will return the route query result to the requester. | 03-04-2010 |
20100061724 | Hierarchical Routing Query Method of Automatic Switched Optical Network - A hierarchical route inquiry method in Automatic Switched Optical Network is applied to the networks having multi-layer route domains. According to the method, after the route controller RC in one child domain receives the Route Request, if it can not calculate the complete route, it sends the Route Request to the RC in the parent domain; if the RC in the parent domain can not obtain the complete route, it further interacts with other child domains to obtain the complete route and returns the Route Response back to the requester. The present invention solves the problem of creating a cross-domain connection in route inquiry in the Automatic Switched Optical Network. | 03-11-2010 |
20100061725 | METHOD AND DEVICE FOR MAPPING ETHERNET CODE BLOCKS TO OTN FOR TRANSMISSION - A method and a device for mapping Ethernet code blocks to an optical transport network (OTN) for transmission are provided. In the method, 10G Ethernet code blocks are mapped to an OTN frame corresponding to an optical channel payload unit | 03-11-2010 |
20100067905 | METHOD AND DEVICES FOR TRANSMITTING CLIENT SIGNALS IN OPTICAL TRANSPORT NETWORK - A method for transmitting client signals in an OTN includes: obtaining the client signals, and determining an OPUk TS in an OPUk according to the client signals; mapping the client signals to the OPUk TS in an agnostic CBR mapping mode; and adding an overhead into the OPUk, and sending the OPUk with the added overhead to the OTN. A device for transmitting client signals and a device for receiving client signals in an OTN are disclosed. | 03-18-2010 |
20100074618 | OPTICAL PATH SWITCHING DEVICE - With the invention, it is possible to suppress losses of light for monitoring and enhances the optical confinement efficiency into an optical fiber for output over the related art. The optical path switching device | 03-25-2010 |
20100086299 | ROUTE QUERY METHOD IN ASON - A route inquiry method in ASON for implementing the route inquiry by the network element NE | 04-08-2010 |
20100092170 | Passive Optical Network and Ultrawide Band Adapter - A system includes a passive cable splitter and an ultra wideband adapter located at a customer premises. The passive cable splitter receives a video signal and a modulated ultra wideband data signal from a remotely-located ultra wideband adapter via a first cable. The video signal and the modulated ultra wideband data signal are output to a set-top box device via a second cable. The ultra wideband adapter located at the customer premises includes a combined signal interface to receive the video signal and the modulated ultra wideband data signal via a third cable. A demodulator extracts a data signal from the modulated ultra wideband data signal to generate a computer readable data signal. The computer readable data signal is output to a computing device via a data connection interface. | 04-15-2010 |
20100098414 | SUPPORTING MULTI-DWELLING UNITS IN PASSIVE OPTICAL NETWORKS - One embodiment provides a system for controlling flow rate in an EPON. The system includes an OLT, an ONUs coupled to the OLT via a passive optical splitter, a switch coupled to a port located on the ONU, and a flow-control mechanism. The ONU includes one or more queues corresponding to one or more classes of Services, and one or more ports. The switch includes a plurality of UNI ports, and the switch is configured to switch one or more upstream traffic flows belonging to the one or more classes of services from the plurality of UNI ports. The flow-control mechanism is configured to set a flow rate of an upstream traffic flow of certain class of service originated from a UNI port. The flow-control mechanism sets the flow rate based on status of an ONU queue corresponding to the class of service of the upstream traffic flow. | 04-22-2010 |
20100098415 | METHOD AND DEVICE FOR MAPPING ETHERNET CODE BLOCKS TO OTN FOR TRANSMISSION - A method and a device for mapping Ethernet code blocks to an optical transport network (OTN) for transmission is provided. According to a preset mapping manner, four groups of 10 Gigabit (10G) Ethernet code blocks are uniformly mapped to a payload area of a general frame provision (GFP) frame, or each group of 10G Ethernet code blocks is interleaved into the payload area of each row of the OTN frame. Thus, specific solutions for mapping four groups of 10G Ethernet code blocks having an encoding rate smaller than the minimum payload bandwidth of the OPU | 04-22-2010 |
20100098416 | METHOD FOR IMPLEMENTING DISTRIBUTION OF LINK STATE INFORMATION IN AN OPTICAL NETWORK - A method for implementing distribution of link state information in an optical network includes: determining information of each link protection attribute section included in a Traffic Engineering (TE) link; carrying the information of each link protection attribute section in a customized TLV, respectively; distributing the TLV in the optical network via Traffic Engineering Link State Advertisement (TE LSA). With this invention, all the link state information such as multiple kinds of protection types included in one TE link can be carried in the customized TLV to distribute. Therefore, in the implementation of this invention, one TE link corresponding to one optical fiber can be configured with multiple kinds of protection types. | 04-22-2010 |
20100098417 | ROUTER HAVING DUAL PROPAGATION PATHS FOR PACKETS - A router comprising an interface module (IM), having an optical path and an electrical path and a speed sensor coupled between an input of the router and an input of the IM. The speed sensor is adapted to receive a packet and detect a speed of the IM connection and in response to the speed of the IM connection being above a threshold value, the speed sensor provides the packet to the optical path of the IM and in response to the relative speed being below the threshold value, the speed sensor provides the packet to the electrical path of the IM. | 04-22-2010 |
20100104280 | FIBRE CHANNEL FRAMING AND SIGNALING OPTIONAL HEADER FOR ETHERNET FABRIC CONFIGURATION INFORMATION - A Fibre Channel over Ethernet (FCoE) device obtains knowledge of the configuration of an attached Ethernet fabric from data fields within a frame header during a fabric initialization or login (FLOGI) process. FCoE N_Ports obtain similar information during the port initialization or login (PLOGI) process. The FCoE device may provide network management services to attached FCoE devices. Embodiments include a management module or processor within an FCoE N_Port. The management module or processor receives a frame having a header and validates and extracts information associated with an Ethernet fabric from the FCoE N_Ports and in order to provide management services based on the information associated with the Ethernet fabric. The FCoE N_Port communicatively couples to at least one additional FCoE N_Port through the Ethernet fabric. The FCoE N_Ports may be implemented within a disc storage drive, a host bus adapter, and/or an FCoE switch. The capability of an N_Port to obtain this information allows a management module or processor at the N_Port to manage the Ethernet fabric. | 04-29-2010 |
20100104281 | Selecting Regeneration Nodes During Path Computation - According to one embodiment, regeneration information indicating the optical reachability of a set of regeneration nodes is managed. Candidate paths from a source node to a destination node are calculated according to the regeneration information. The destination node is optically reachable from the source node along a candidate path. At least one candidate path is selected from the candidate paths. | 04-29-2010 |
20100104282 | SYSTEMS AND METHODS FOR ABSOLUTE ROUTE DIVERSITY FOR MESH RESTORABLE CONNECTIONS - The present disclosure provides absolute route diversity (ARD) for mesh restorable sub-network connection protection (MR-SNCP) services. ARD addresses concerns in MR-SNCP by providing absolute path diversity between both paths (e.g., peer Sub Network Connections (SNCs)) of an MR-SNCP connection. If an ARD condition is not met, the peer SNC is not mesh restored and the MR-SNCP works with just one single SNC. The advantage of this approach is to reuse the bandwidth saved from ARD for other MR-SNCP, i.e. more efficient bandwidth utilization due to ARD for other MR-SNCPs, and better service quality guarantee (protection) in terms of planning and managing the network bandwidth. | 04-29-2010 |
20100111526 | COMMUNICATIONS NODE FOR AND METHOD OF ROUTING OPTICAL DATA PACKET SIGNALS - The invention relates to a communications node ( | 05-06-2010 |
20100119226 | RECONFIGURABLE DWDM WAVELENGTH SWITCH BASED ON COMPLEMENTARY BANDPASS FILTERS - Programmable wavelength line switches and routers based on a complementary wavelength switch (CWS) building block are described for switching optical signals of different wavelengths between signal lines, with each carrying multiple wavelengths. The CWS building block is based on a complementary bandpass filter structure. The reconfigurable wavelength routers described allow any of a plurality of wavelengths on any line to be switched to any output line by programming the filters accordingly. The various implementations described are useful for wavelength division multiplexing (WDM), dense WDM, and ultra dense WDM optical communications systems, as well as for on-chip interconnects and optical signal processing. | 05-13-2010 |
20100129075 | TRANSMISSION SYSTEM, TRANSMISSION APPARATUS, AND CONTROL METHOD OF TRANSMISSION SYSTEM - A transmission system includes: a sending apparatus; a receiving apparatus; and an intermediate apparatus, the sending apparatus, the receiving apparatus and the intermediate apparatus being connected in a ring shape via a first transmission line used to transmit a first channel signal and a second channel signal in one direction and a second transmission line used to transmit the first channel signal and the second channel signal in another direction opposite to the one direction, the receiving apparatus including a first phase adjustment unit that adjusts a phase difference between the first channel signal of the first transmission line and the first channel signal of the second transmission line, and the intermediate apparatus including a second phase adjustment unit that adjusts a phase difference between the second channel signal of the first transmission line and the second channel signal of the second transmission line. | 05-27-2010 |
20100135658 | Transport apparatus and transport method - A transport apparatus includes a plurality of transport processing units. The transport processing unit transports optical signals on an optical network which controls, by transmitting or receiving the optical signals including control information, apparatuses that are managed on the basis of areas. The transport processing unit includes a setting-information storage unit that stores therein setting information indicating a group to which a plurality of apparatuses within the area belongs, a frame generating unit that, upon receiving the optical signal, determines on the basis of the setting information whether the control information is to be terminated or to be passed through itself, sets a destination depending on the result of the determination, and generates a frame including the control information, and a path switching unit that switches a path of the frame on the basis of the destination of the frame. | 06-03-2010 |
20100142948 | FRAMER/MAPPER/MULTIPLEXOR DEVICE WITH 1+1 AND EQUIPMENT PROTECTION - In one embodiment, the present invention is a framer/mapper/multiplexor (FMM) device that can simultaneously (i) send protection copies of both its working incoming high-speed (e.g., STS-12) signal and incoming low-speed signals to a protection FMM device, and (ii) receive corresponding protection signals from the protection FMM device. Furthermore, the FMM device can select between working and protection signals at a switching level (e.g., STS-1) lower than the high-speed level, allowing for 1+1 APS/MSP protection and equipment protection at the board level, the device level, and at the STS-1 level. Yet further, four or more FMM devices can be configured so that all FMM devices can communicate with their corresponding protection FMM devices using a single, shared, 4-pin link (e.g., quad-OC-3 mode), and still select between working and protection signals at the switching level (e.g., STS-1). | 06-10-2010 |
20100158516 | Integrated Fiber Management for FTTx Architectures - According to the invention, a system for providing telecommunication services to a plurality of customer premises is disclosed. The system may include a central office and a first plurality of optical fibers. The central office may include a trunk line-out and a first optical line terminal. The first optical line may be in communication with the trunk line-out via at least a first optical line. The first optical line terminal may also include a first optical splitter, internal to the first optical line terminal, configured to split a first communication travelling across the first optical line into a first plurality of sub-communications. Each of the first plurality of optical fibers may receive one of the first plurality of sub-communications from the first optical line terminal and provides it to one of the plurality of customer premises. | 06-24-2010 |
20100158517 | METHOD AND APPARATUS FOR LOSSLESS SIGNAL HANDOVER - An optical communication system and method for performing signal handover from one aperture/antenna in the optical communication system to another. In one example, the system includes optical signal processing apparatus that determines a quality metric of the signals received by each aperture, and a frame alignment detection apparatus that detects a frame alignment signal (FAS) in the data stream of at least one of the received optical signals. Based on detection of the FAS and the quality metric, handover is performed from one aperture (e.g., one receiving a signal with a worsening quality metric) to another aperture that is receiving a signal with an improving quality metric. | 06-24-2010 |
20100158518 | MULTI-LANE SIGNAL TRANSMITTING AND RECEIVING APPARATUSES - An optical communication system is provided. In particular, multi-lane signal transmitting and receiving apparatuses capable of transmitting and receiving a multi-lane signal using the same inverse multiplexing scheme even when optic modules having several transport lane numbers are selected according to a purpose of use are provided. Each OTUk capable of containing a client signal in a transport hierarchy signal (OTUk-Xv) is defined as a virtual container, and Y virtual lanes are allocated to respective virtual containers X, in which identification information for the allocated virtual lanes is inserted into an overhead area and a transport hierarchy multi-lane signal is transmitted in the form of OTUk-XvYd. A receiving stage extracts the identification information inserted into the overhead area of the transport hierarchy signal in the form of OTUk-XvYd, compensates for a skew of the received signals, and aligns virtual lane signals for each virtual container to restore an OTUk-Xv signal that is an original transport hierarchy signal. | 06-24-2010 |
20100158519 | Method, apparatus and system for transmitting and receiving client signals - The present invention provides a method, apparatus and system for transmitting and receiving a client signal. The method for transmitting a client signal includes, at the transmitting end, mapping a client signal to be transmitted to a corresponding low-order Optical Channel Data Unit (ODU) in a low-order ODU set, wherein low-order ODUs in the low-order ODU set having rates increased in order, and having rate correspondence relations with the client signals; mapping the low-order ODU to a timeslot of a high-order Optical Channel Payload Unit (OPU) in a high-order OPU set; and adding overheads to the high-order OPU to form an Optical Channel Transport Unit (OTU), and transferring the OTU to an Optical Transport Network (OTN) for transmission. | 06-24-2010 |
20100166422 | Isolation Switch for Fibre Channel Fabrics in Storage Area Networks - An isolation switch blade Fibre Channel switch presents F_ports to form a first Fibre Channel fabric and N_ports to a second Fibre Channel fabric to appear as node devices. The isolation switch blade may be used to connect a plurality of blade servers to a Fibre Channel fabric. Fabric events engendered by the insertion or removal of hot-pluggable devices are handled by the isolation switch blade and “event storms” on the Fibre Channel fabric are avoided. The isolation switch blade presents the blade servers to the FC fabric as a virtualized N_port. | 07-01-2010 |
20100183301 | APPARATUS SUITABLE FOR TRANSPORTING CLIENT SIGNALS, AND APPARATUS AND METHOD SUITABLE FOR MAPPING OR DEMAPPING TRIBUTARY SLOTS FOR TRANSPORT OF CLIENT SIGNALS - Disclosed area method and apparatus of transporting client signals and a method and apparatus of mapping or demapping tributary slots for transport of client signals. The client signal transporting apparatus defines a bit rate of an optical transport signal, and bit-transparently maps and multiplexes client signals that operate at the defined bit rate. Also, the client signal transporting apparatus adjusts a bandwidth by extending a mapping area to increase a data capacity to be allocated to tributary slots. | 07-22-2010 |
20100183302 | OPTICAL SWITCH - An optical device for switching an optical signal between a first optical path and a second optical path, including a substrate, a first guide forming at least a portion of the first optical path, formed on the substrate, and having a movable portion separated from the substrate, a second guide forming at least a portion of the second optical path and disposed adjacent to the first guide, and means for electro statically bending the movable portion so as to optically couple the first guide to the second guide. | 07-22-2010 |
20100189435 | System and Method for Switching Packet Traffic over an Optical Transport Network - A system and method for switching packet traffic over an optical transport network comprises a network element having first and second mappers for mapping packet traffic to electrical streams. A network interface includes a packet switch that directs a first packet stream to the first mapper based on a destination of the packets in the first packet stream and a second packet stream to the second mapper based on a destination of the packets in the second packet stream. The first mapper produces a first stream of electrical signals from the first packet stream, and the second mapper produces a second stream of electrical signals from the second packet stream. Each electrical signal stream is allocated a portion of bandwidth of an optical interface. The optical interface produces an optical signal that includes the first and second electrical signal streams according to the bandwidth allocated to each electrical signal stream. | 07-29-2010 |
20100196005 | Optical Multiport Spectral Phase Encoder - Data security of a multi-dimensional code system is increased. An optical device is provided with a single input port; a splitter splitting an input light from the input port into a plurality of lights; a plurality of phase shifters each shifting one of the lights split by the splitter; a multi-port encoder/decoder inputting the lights whose phases are shifted by the phase shifters and generating spectral encoded codes; and a plurality of output ports outputting the spectral encoded codes generated by the multi-port encoder/decoder. | 08-05-2010 |
20100209103 | OPTICAL TRANSCEIVER MODULE - There are provided a downsized and low-cost optical module used as a terminal for wavelength multiplexing optical transmission and one-core bidirectional optical transmission which transmits lights of plural wavelengths through one optical fiber, and a method of manufacturing the optical module. A base on which plural optical elements are mounted, and an optical multiplexer and demultiplexer having wavelength selection filters and mirrors formed on both surfaces of a substrate are prepared. Those two parts are packed into a package so that an optical element mounted surface and a filter surface are substantially parallel to each other, and the optical elements are arranged to emit or receive lights obliquely to the base. With this configuration, because the optical multiplexer and demultiplexer can be mounted in parallel to an X-Y plane, a package can be easily machined by using a lathe, thereby enabling a reduction in the costs. | 08-19-2010 |
20100221001 | METHODS AND APPARATUS FOR SYSTEM FRAMING SYNCHRONIZATION CONTROL FOR A FRAMER/MAPPER/MULTIPLEXOR DEVICE WITH 1+1 AND EQUIPMENT PROTECTION - Methods and apparatus are provided for framing synchronization control for a framer/mapper/multiplexor (FMM) device with 1+1 and equipment protection. FMM device are disclosed that synchronize one or more internal signals by changing a phase of the one or more internal signals without changing a frequency of the one or more internal signals based on a desired phase at a destination of each of the one or more internal signals. A programmable synchronization signal may optionally be employed for the synchronization. | 09-02-2010 |
20100226647 | CONTROL METHOD FOR THE CROSS-DOMAIN CALL AND THE CONNECTION OF ASON - The present invention discloses a control method for cross-domain call and connection of ASON. Firstly, a multi-layer network structure is constructed; a network element in parent domain corresponds to a child domain and can communicate with the network elements in the child domain; after the input NCC | 09-09-2010 |
20100232792 | DELAYED OPTICAL ROUTER/SWITCH - A system, method, and apparatus for delayed optical router based on slow light and nondegenerate four-wave mixing processes are presented, in which three laser pulses interact with a three-level nonlinear optical medium composing two closely spaced ground states and an excited state. The delayed optical routing mechanism is based on a slow light phenomenon, in which a group velocity of an incoming input signal pulse is slowed down due to quantum coherence induced refractive index change. The two-photon coherence induced on the ground states via electromagnetically induced transparency is optically recovered via nondegenerate four-wave mixing processes. The nondegenerate four-wave mixing generation is enhanced owing to absorption cancellation. In this case, the individual pulse switching/routing time is limited by the coherence decay time that is much faster than population decay time, where the population decay-time is a limiting factor of conventional switching devices. In the present invention of the delayed optical router the overall switching/routing time, however, is controlled to be delayed by using the slow light. Even though the overall switching/routing time can be delayed, the switching bandwidth of the present invention is not degraded at all because the input and output signal's group velocity across the delayed optical router is still same. Therefore, the present invention of the delayed optical router gives an advantage of wide-bandwidth optical data traffic control using a narrow-bandwidth processing unit such as an electronic device. Another advantage is signal amplifications owing to the dark-resonance enhanced nondegenerate four-wave mixing processes. | 09-16-2010 |
20100232793 | Interface Switch for use with Fibre Channel Fabrics in Storage Area Networks - An interface switch which presents itself as switch to an enterprise fabric formed of the devices from the same manufacturer as the interface switch and that of a host or node to an enterprise fabric from a different manufacturer. This allows each enterprise fabric to remain in a higher performance operating mode. The multiplexing of multiple streams of traffic between the N_ports on the first enterprise fabric and the second enterprise fabric is accomplished by N_port Virtualization. The interface switch can be connected to multiple enterprise fabrics. All control traffic address mappings between virtual and physical addresses may be mediated and translated by the CPU of the interface switch and address mappings for data traffic performed at wire speed. Since the interface switch may preferably be a single conduit between the enterprise fabrics, it is also a good point to enforce perimeter defenses against attacks. | 09-16-2010 |
20100239249 | TAP, LRM, RESOURCE STATE CONTROL SYSTEM AND METHOD - The present invention discloses a TAP, which comprises a resource state inputting interface, configured to be connected to termination and adaption function of transport plane, and to acquire therefrom a resource management state, a resource use state and a resource operational state; a use state outputting interface, configured to be connected to the termination and adaption function of the transport plane, and to notify it of the resource use state; a subnetwork point adding or withdrawing interface, configured to be connected to a link resource manager, and to notify it of the adding or withdrawing of the subnetwork point; a subnetwork point binding state outputting interface, configured to be connected to the link resource manager, and to notify it of subnetwork point binding state; and a subnetwork point operational state outputting interface, configured to be connected to the link resource manager, and notifying it of the subnetwork point operational state. The present invention also discloses an LRM, a resource state control system and method. By means of the present invention, the maintenance of the SNP binding state and the synchronization with the general state of resources can be achieved. | 09-23-2010 |
20100239250 | TWO NON-ORTHOGONAL STATES QUANTUM CRYPTOGRAPHY METHOD AND APPARATUS WITH INTRA- AND INTER-QUBIT INTERFERENCE FOR EAVESDROPPER DETECTION - An apparatus and method for implementing a secure quantum cryptography system using two non-orthogonal states. For each qubit, the emitter station prepares a quantum system in one of two non-orthogonal quantum states in the time-basis to code bit values. Intra- and inter-qubit interference is then used to reveal eavesdropping attempts. Witness states are used to help reveal attacks performed across the quantum system separation | 09-23-2010 |
20100247097 | Optical signal generator - An optical signal generator includes a splitter, a first modulator, a second modulator, a signal-switching unit and a multiplexer. The splitter splits an optical pulse train into a first pulse train and a second pulse train. The first modulator receives the first pulse train and first data signal, and generates a first modulation signal by performing on-off-keying or phase modulation on the first pulse train based on the strength of the first data signal. The second modulator receives the second pulse train and second data signal, and generates a second modulation signal by performing the on-off-keying or phase modulation on the second pulse train based on the strength of the second data signal. The signal-switching unit delays pulses of the second modulation signal or adjusts a phase of a carrier included in the second modulation signal according to a switching signal. The multiplexer generates an optical modulation signal by multiplexing the first modulation signal and the second modulation signal. | 09-30-2010 |
20100254703 | Optical Network for Cluster Computing - Leaf switches and spine switches in a Clos network are interconnected by optical fibers. The network enables large numbers of servers or other apparatus to communicate with each other with minimal delay and minimal power consumption. | 10-07-2010 |
20100254704 | TRANSCEIVER APPARATUS, COMMUNICATION CONTROL METHOD, AND CONCENTRATOR - In order to reduce the power consumption of a transceiver apparatus, In a transceiver apparatus that comprises a plurality of transmitting sections that divide input data and sends the divided data using a plurality of parallel transmission channels, at least one parallel transmission channel is determined from the plurality of parallel transmission channels in accordance with an amount of data, and a power source is supplied to the transmitting section from the plurality of transmitting sections which sends the divided data using the determined parallel transmission channel, while not supplying a power source to transmitting sections from the plurality of transmitting sections which do not send the divided data. | 10-07-2010 |
20100260498 | OPTICAL NETWORK TERMINAL OF THE GIGABIT PASSIVE OPTICAL NETWORK AND FRAME TREATMENT METHOD OF THE ONT - A gigabit passive optical network (GPON) system for fiber to the home (FTTH) service must provide a down-stream data rate of an optical band to provide IPTV service with hundreds of channels to subscribers, and must be able to provide an upstream data rate of an optical band using a currently available BM-IC chip. A currently available BM-IC chip for a GPON has 1.244 Gbps and 2.488 Gbps modes. Accordingly, an optical network terminal (ONT) for a GPON that is capable of providing a downstream transmission band of 10-Gbps and an upstream transmission band of 1.244 Gbps or 2.488 Gbps, and a method for processing an upstream frame in the terminal, are provided. The GPON ONT can provide 20 Mbps, high-definition IPTV service with 500 channels and can provide both upstream data rates of 1.244 Gbps and 2.488 Gbps according to a user's selection without using an additional device. | 10-14-2010 |
20100266277 | DATA TRANSMISSION USING DIRECT AND INDIRECT OPTICAL PATHS - A system for transmitting data, including: a transmitter node having a setup path packet and multiple data packets; a receiver node connected to the transmitter node by a first optical channel (OC); and a first intermediate node having a first forwarding module and connected to the transmitter node by a second OC and to the receiver node by a third OC, where the transmitter node transmits the setup path packet and a first subset of the multiple data packets to the first intermediate node using the second OC, where the first forwarding module relays, in response to receiving the setup packet, the first subset to the receiver node by switching the first subset from the second OC to the third OC, and where the receiver node receives a second subset of the multiple data packets from the transmitter node using the first OC. | 10-21-2010 |
20100266278 | AUTOMATICALLY SWITCHED OPTICAL NETWORK AND METHOD FOR DATA TRANSMISSION IN THE NETWORK - An automatically switched optical network includes several areas of a transmission plane and a control plane, and a method for data transmission in the network includes that when the control plane has detected at least one partition of an area separated from other partitions of the area, a route over area is realized between the separated partitions of the area by the way of virtual link in the area. When several partitions exist in a certain area of the network, which can not be connected with each other through routes within the area, and the data transmission can not be performed between these partitions, a hierarchical route in the case of the area of ASON transmission plane being parted is realized by the method, so when the several separated partitions are caused by link fault in a certain area, the hierarchical route over area can be realized for the partitions of the area. | 10-21-2010 |
20100278531 | OPTICAL SWITCH AND OPTICAL SIGNAL COMMUNICATION SYSTEM - An optical switch including a first reversible optical circulator and a second reversible optical circulator is provided. Each of the first reversible optical circulator and the second reversible optical circulator respectively has four I/O ports, wherein the four I/O ports are respectively a first terminal, a second terminal, a third terminal, and a fourth terminal, the four terminals sequentially transmit an optical signal in a forward circulation or a backward circulation according to a control signal, and an open end is formed between the first terminal and the adjacent fourth terminal. The open ends of the first reversible optical circulator and the second reversible optical circulator are coupled with each other. | 11-04-2010 |
20100278532 | SYSTEM-ON-CHIP HAVING OPTICAL INTERCONNECTIONS - A system for exchanging information in an on-chip communication network using optical flow information for communication between Intellectual Property cores. The information is exchanged between a plurality of initiators and targets in the Intellectual Property cores. The system includes a router for propagating optical flow information from the initiators to the targets. Each initiator includes an interface to convert the traffic generated by the initiator and transmit it in the form of an optical flow within the on-chip communication network, and each target includes an interface to convert information from the optical form into the electrical form. The system is organized as a parametric system and includes programming module to define a first set of high level parameters, a second set of initiator network interface parameters and a third set of target network interface parameters. | 11-04-2010 |
20100296809 | METHOD AND APPARATUS FOR SERVICE PROTECTION - A method and apparatus for realizing service protection are provided. The method includes the following steps: determining paths corresponding to automatic protection switching (APS)/protection communication channel (PCC) overhead bytes that are available to all nodes in a service protection trail; selecting a path for service protection from the determined paths corresponding to the APS/PCC; and using the selected path for implementing the service protection. Therefore, it is ensured that several service protections using APS/PCC may coexist in an optical transport network (OTN) and different kinds of service protection can be easily distinguished from one another. | 11-25-2010 |
20100310253 | LESS LOSS IN-ORDER DELIVERY PROTOCOL FOR FIBRE CONNECTION ARCHITECTURE - Methods and apparatus for providing in-order delivery in Fibre Channel (FC) fabric are disclosed. A topological change between a first switch and a second switch is evaluated to determine whether the topological change may result in out-of-order delivery. If it is determined that the topological change may result in out-of-order delivery, a flush frame is sent to the second switch and stop-on-mark is performed on all interfaces of affected links. Upon receiving the flush frame, the second switch drains all virtual output queues (VOQs) and sends an acknowledgement frame to the first switch. The first switch resumes in-order-delivery in an affected link after receiving the acknowledgement frame or expiration of a lifetime time of a frame. | 12-09-2010 |
20100310254 | DEVICE FOR MULTICAST OF OPTICAL SIGNALS IN THE INTERNET AND OTHER NETWORKS - Device for multicast of optical signals in the Internet and other networks is formed by an electronic part and an optical part. The electronic part consists of a control module, an interface module formed by a power supply block, a block for measuring basic operational parameters of the whole device and an interface, and by a power supply part. The power supply block of the interface module is connected to the power supply part, to the optical part and to the control module. The interface is connected to the optical part and to the control module, and the block for measuring basic operational parameters of the whole device is connected to the power supply part and to the control module. Input/output interfaces involving a standard interface for communication with a user and/or an interface for communication in an Ethernet network and/or an interface via RS 232 and/or an interface for communication via a serial USB bus are connected to the control module. The optical part of the device is designed as a double-stage with a first stage formed by M passive wide-spectrum optical splitters, each of which is equipped with N outputs and a second stage is realized by N wide-spectrum optical switches, each of which is equipped with M inputs. | 12-09-2010 |
20100329672 | Multi-channel optical arrayed time buffer - In communications where synchronization of optical signals containing data is required, a multi-channel optical arrayed time buffer may be used. The time buffer includes multiple delay paths comprising delay elements, some of which can be shared to dispense different delays. In an embodiment, an arrayed waveguide grating (AWG) is illustratively used to route an optical signal to a first delay path, which is returnable to the AWG through the first delay path to be rerouted to a second delay path. The total delay affordable to the optical signal is a function of at least a first delay afforded by a delay element in the first delay path, and a second delay afforded by a delay element in the second delay path. In addition, without returning to the AWG, another optical signal may be routed through the second delay path alone to be afforded the second delay only. | 12-30-2010 |
20100329673 | Method and Apparatus for Signal Formation with Guaranteed Consistent Overhead Insertion - A communication device comprises a signal combiner, first storage elements, second storage elements and a controller. The signal combiner is configured to combine overhead information with additional information in forming a frame of a signal. The first storage elements are adapted to receive respective portions of a given block of the overhead information to be applied to the signal combiner, and the second storage elements are coupled between respective ones of the first storage elements and respective inputs of the signal combiner. The controller is operative to monitor a count of portions of the frame as the frame is formed by the signal combiner and to control loading of the portions of the given block of the overhead information into the second storage elements from the first storage elements responsive to the monitored count. The disclosed techniques for guaranteed consistent overhead insertion can be implemented in any type of communication system which utilizes overhead insertion in its framing operations. | 12-30-2010 |
20100329674 | OPTICAL NODE - A module for routing packets of first and second optical signals comprising first and second inputs (A,B) for receiving the first and second optical signals and first and second outputs (C,D) for the optical signals. The module comprises optical switching means ( | 12-30-2010 |
20100329675 | INTERFACE CIRCUIT - The interface circuit of the present invention comprises: a first framer configured to input or output a first standard frame compliant with a first standard to or from a transmission path; and a second framer connected to the first framer and configured to input or output a second standard frame compliant with a second standard from or to an in-device interface. The second framer comprises a second framer transmission section configured to input a transmission data from the in-device interface and generate a second standard frame with the transmission data in a payload. The first framer comprises a first framer transmission section connected to the second framer transmission section and configured to input the generated second standard frame from the second framer transmission section, generate a first standard frame with the generated second standard frame and output the generated first standard frame to the transmission path; and a first framer reception section configured to input a first standard frame from the transmission path, terminate the inputted first standard frame and generate a second standard frame with a reception data stored in a payload of the inputted first standard frame. The second framer further comprises a second framer reception section connected to the first framer reception section and configured to input the generated second standard frame from the first framer reception section, terminate the inputted second standard frame and output the reception data stored in the inputted second standard frame to the in-device interface. | 12-30-2010 |
20110008043 | OPTICAL ACCESS NETWORK, REMOTE UNIT, OPTICAL COMMUNICATION METHOD, AND OPTICAL COMMUNICATION PROGRAM - The present invention is to provide an optical access network in which a remote unit receives an optical burst signal. A central unit (OLT) transmits a DC-balanced optical continuous signal including packets having identification information for identifying each remote unit (ONU) to an optical switching module (OSM). The optical switching module (OSM) receives the DC-balanced optical continuous signal from the central unit (OLT), optically switches the packets based on the identification information, and transmits a DC-balanced optical burst signal including the packets to the remote unit (ONU). The remote unit (ONU) receives the DC-balanced optical burst signal and acquires the packets transmitted to the remote unit (ONU). | 01-13-2011 |
20110008044 | Optical-network design apparatus - An apparatus for designing an optical network having nodes, includes: a parameter holding unit which holds values of one or more optical-transmission parameters corresponding to one or more components constituting the optical network; a part generation unit which generates design candidates for a part to be arranged in each of one or more spans between the nodes so that each of the design candidates contains at least one of the one or more components; a part selection unit which makes a selection, for each of the one or more spans, of one of the design candidates which has at least one value of at least one of the one or more optical-transmission parameters satisfying a design condition; and a construction control unit which constructs the optical network by combining one or more parts each of which is selected by the part selection unit. | 01-13-2011 |
20110058810 | OPTICAL NETWORK UNIT (ONU) AND METHOD OF OPERATING THE ONU - Provided is an Optical Network Unit (ONU) and a method of operating the ONU. The ONU may include: a measurement unit to measure a downstream optical signal strength of downstream data received from an Optical Line Termination (OLT) via an optical splitter; a determination unit to determine an upstream optical signal strength based on the measured downstream optical signal strength; and a communication unit to transmit, to the OLT via the optical splitter, upstream data generated based on the determined upstream optical signal strength. | 03-10-2011 |
20110064406 | ASYMMETRICAL INTERLEAVER AND DEINTERLEAVER - Asymmetrical interleavers and deinterleavers. In one example embodiment, an asymmetrical deinterleaver includes first, second, third, fourth, and fifth filter cells interleaved with first, second, third, and fourth waveplates and followed by a fifth waveplate. The filter cells are configured to filter optical signals propagating on first and second legs of an optical loop. The asymmetrical deinterleaver also includes a retro reflector optically coupled with the filter cells and waveplates. The retro reflector is configured to reflect the optical signals between the first leg and the second leg to form the optical loop. The asymmetrical deinterleaver further includes a single-fiber collimator optically coupled to the first leg of the optical loop and a dual-fiber collimator optically coupled to the second leg of the optical loop. | 03-17-2011 |
20110064407 | Power save mode for lightpaths - A method for communicating optically between nodes of an optical network, including forming, between a first node and a second node of the network, a set of lightpaths, each of the set of lightpaths having a respective configuration, and transferring communication traffic between the first and second nodes via the set of lightpaths. The method also includes forming a determination for the set of lightpaths that a communication traffic level associated therewith is less than a predetermined threshold, and in response to the determination, removing a lightpath having a given configuration from the set of lightpaths to form a reduced set of lightpaths. The method further includes transferring the communication traffic between the first and second nodes via the reduced set of lightpaths, while reducing a level of power consumption in the removed lightpath and while maintaining the given configuration of the removed lightpath. | 03-17-2011 |
20110069953 | DOCSIS PON - In accordance with a first aspect of the disclosure, a system is provided. The system includes: an optical line terminal (OLT) shelf including a plurality of optical line cards, each optical line card supporting at least one passive optical network (PON) interface for communicating with a corresponding set of optical network units (ONUs), the OLT shelf thereby corresponding to a plurality of sets the ONUs; a system card controller for controlling the plurality of optical line cards; and a DOCSIS proxy for emulating a cable modem (CM) SNMP agent for each ONU, the DOCSIS proxy being responsive to an SNP manager in a DOCSIS NMS to configure the ONUs accordingly. | 03-24-2011 |
20110069954 | On Improved Optical Network Apparatus Having Optical Line Terminal Blade Protection with 1-to-N Redundancy and No-Service-Interruption - There is provided an optical network apparatus having interconnected processing gigabit passive optical network G-PON blades, a protection blade, and controller blade, the regular blades and protecting blade having a higher layer processing and switching interface to a G-PON media access control MAC coupled to PHY including serializer and de-serializer modules that are connected to respective interface modules, the improvement including a protecting 1:N signal drive and a protecting N:1 signal select driver coupled between the interface module and serializer and de-serializer modules of the protecting blade, respectively, for protecting connection to the interface module of the protecting blade. The improvement further includes a processing 1:N signal driver and a processing N:1 signal select driver coupled between the interface module and serializer and de-serializer modules of the processing G-PON blade, respectively, for protecting connection to the interface module of the processing G-PON blade and a 1:2 signal driver and 2:1 signal select driver in the interface module for providing an alternative connection to the protection blade. | 03-24-2011 |
20110069955 | FAILSAFE OPTICAL SPLITTER AND METHOD TO ISOLATE FAULTS IN A PASSIVE OPTICAL NETWORK - An optical splitter for a passive optical network for telecommunication signal transmission with an optical line terminal includes a wavelength selective optical electrical converter, an AC/DC splitter, an energy reservoir and optical switches, where the splitter comprises also a data transmission processing module by which the optical switches can be controlled according to data signals transmitted from the optical line terminal. | 03-24-2011 |
20110076015 | Optical network equipment and optical network - A position in which an optical signal characteristic is compensated in an optical network can be chosen. An optical network equipment measures an optical signal characteristic for each wavelength, and notifies an optical network equipment on a communication path of an optical signal characteristic index and control necessity determination threshold. In an upstream portion of the communication path, the optical network equipment (a start point or the like of the communication path) that can compensate the optical signal characteristic for each wavelength determines the necessity to eliminate a deviation between wavelengths and the position to eliminate it, using the optical signal characteristic index and the control necessity determination threshold. The equipment determines a compensator to be controlled, and a compensation amount, based on the result, and commands an optical network equipment including the compensator to control the compensator, using a communication path establishment control protocol such as GMPLS-extended RSVP-TE. | 03-31-2011 |
20110091209 | SELECTOR IN SWITCHING MATRIX, LINE REDUNDANT METHOD, AND LINE REDUNDANT SYSTEM - There is provided a line redundant method for implementation of line switching in a switching matrix, including the bridge step of outputting a data signal to a plurality of redundant lines in the switching matrix, and the selector step of selecting only a data signal, of a plurality of data signals input from another switching matrix other than the switching matrix through the plurality of redundant lines, which is input through a redundant line required in the switching matrix, and not selecting the data signals input to the switching matrix through the lines other than the required redundant line. A line redundant system for implementing this method is also provided. | 04-21-2011 |
20110097082 | APPARATUS, SYSTEMS, AND METHODS RELATED TO IMPROVED OPTICAL COMMUNICATION MODULES - In one embodiment, a system includes a first cable interface module, a second cable interface module, and an interface card. The first cable interface module includes a signal recovery module. The second cable interface module does not include a signal recovery module. The interface card includes a first interface module and a second interface module. The first interface module is configured to be coupled to the first cable interface module at a first time and to the second cable interface module at a second time. The second interface module is configured to be coupled to the remaining cable of the first cable interface module and the second cable interface module. | 04-28-2011 |
20110110662 | METHOD AND APPARATUS FOR INTEGRATING AUTOMATED SWITCHING IN A PASSIVE OPTICAL NETWORK - An approach is provided for integrating one or more fiber switches in a passive optical network. A platform generates a command signal to control a splitter hub of a passive optical network, the splitter hub being configured to communicate with a plurality of optical network terminals that respectively serve a plurality of customer premises. The splitter hub includes a fiber switch configured to provide switching between one of a plurality of input ports and one of a plurality of output ports of the splitter hub. | 05-12-2011 |
20110116794 | Radio-Over-Fiber (RoF) System for Protocol-Independent Wired and/or Wireless Communication - An optically-switched fiber optic communication system, such as a Radio-over-Fiber (RoF) based optical fiber link system, may be used to increase the range of peer-to-peer communications. The optically-switched fiber optic communication system may include a head-end unit (HEU) having an optical switch bank. Fiber optic cables comprising optical fibers optically couple the HEU to one or more remote access points in different coverage areas. The optical switch bank in the HEU provides a link between the remote access points in the different coverage areas such that devices in the different cellular coverage areas can communicate with each other over the optical fibers through the HEU. By using the optically-switched fiber optic communication system, the range and coverage of communication between devices may be extended such that devices in different coverage areas and devices using different communication protocols can communicate. | 05-19-2011 |
20110116795 | OPTICAL I/O BUS SYSTEM - An optical input/output (I/O) bus system for connecting a plurality of external devices with a central processing unit (CPU) or memory in a specific system using an optical signal is provided. The optical I/O bus system includes a serializer and deserializer (SerDes) connected with the CPU or memory, and configured to divide a serial electrical signal into parallel electrical signals or combine parallel electrical signals into a serial electrical signal, a photoelectric converter prepared between the SerDes and the external devices, and configured to convert the serial/parallel electrical signals into an optical signal or an optical signal into an electrical signal, a plurality of optical transmission means disposed in parallel to transfer the optical signal converted by the photoelectric converter, an optical switch prepared between the photoelectric converter and the optical transmission means, and configured to switch to one of the optical transmission means to transfer the optical signal converted by the photoelectric converter to the optical transmission means according to an address of the optical signal, and a plurality of optical slots connected to the respective optical transmission means to connect the external devices so that the optical signal is input/output. In the optical I/O bus system, a high-capacity signal can be transferred without distortion, interference, and bottleneck using optical connection technology. | 05-19-2011 |
20110116796 | METHOD, DEVICE, AND SYSTEM FOR BEARING MULTI-PROTOCOL LABEL SWITCHING PACKET IN PASSIVE OPTICAL NETWORK - A method for bearing a multi-protocol label switching (MPLS) packet in a passive optical network (PON), a receiving method, an optical network unit (ONU)/optical network terminal (ONT)/optical line terminal (OLT), and a communication system are provided, which relate to an optical communication network, and are designed to solve the technical problem that protocol stack layers are complicated when a PON and a mobile network are coupled. The sending method includes the following steps. An MPLS packet is obtained. The MPLS packet is encapsulated into a Gigabit PON (GPON) encapsulation mode (GEM) frame. The GEM frame is sent. The receiving method includes the following steps. A GEM frame is received. The GEM frame is decapsulated into an MPLS packet. The MPLS packet is sent. Therefore, tight coupling between the PON and the mobile network is realized. | 05-19-2011 |
20110123193 | LINE CONTROL METHOD IN OPTICAL NETWORK AND OPTICAL NETWORK ITSELF - In an access network using optical switches, communications between an OLT and ONUs are established without a photoelectric conversion performed at an optical switching unit. | 05-26-2011 |
20110129218 | OPTICAL NETWORK TERMINAL, METHOD FOR TIME SYNCRONIZATION THEREOF, OPTICAL LINE TERMINAL, AND METHOD FOR MANAGING NETWORK THEREOF - A method for synchronizing time by an optical network terminal (ONT) in a passive optical network system is provided. The method includes: receiving a ranging request message including a first current time of an optical line terminal (OLT); calculating a first compensation time when a transmission delay is compensated at a time that the ranging request message is received; transmitting a serial number response message to the OLT; calculating a second compensation time when the transmission delay is compensated at a time when the serial number response message is transmitted; receiving a ranging time message including a second current time when the serial number response message from the OLT is received; calculating an offset time from the first current time, the second current time, the first compensation time, and the second compensation time; and synchronizing a clock of the ONT and a clock of the OLT based on the offset time. | 06-02-2011 |
20110129219 | LIGHT MULTIPLEXER - One side surface of a diffraction grating is securely held by a holder, and further, the holder is securely supported on a substrate by a supporter in such a manner that the diffraction grating held by the holder is not brought into contact with the substrate. In this manner, the diffraction grating is fixed only onto one side surface to the supporter via the holder, and further, the diffraction grating is not brought into contact with the substrate. Therefore, the lower portion of the supporter is displaced by heat generated in the substrate, however, the displacement of the supporter cannot adversely influence directly on the diffraction grating since the holder is interposed between the displaced portion and the diffraction grating. | 06-02-2011 |
20110135303 | DIRECT MODE ADAPTER BASED SHORTCUT FOR FCoE DATA TRANSFER - This invention permits all FCoE (Fibre Channel over Ethernet) frames to be transferred from one FCoE network adapter to another without having to traverse through a Fiber Channel Forwarder (FCF) device. After the FCF is determined not to be present, a logical End-To-End connection is established between Peer FCoE Adapters. This invention permits an FCoE message originating at an FCoE network adapter to be sent to an FCoE receiving adapter across “Ethernet” links and switches, or via a single “Ethernet” link (Point-To-Point) but without having to pass through FCF devices. | 06-09-2011 |
20110135304 | TRANSMISSION APPARATUS AND SIGNAL MAPPING METHOD - A transmission apparatus exercises insertion control for inserting a client signal and a stuff byte into a payload area in a frame into which the client signal is to be mapped, and sends the frame after the insertion control. In addition, the transmission apparatus inserts the client signal or the stuff byte in columns of the frame into the payload area except a leading column. | 06-09-2011 |
20110150466 | ENCAPSULATION SCHEME FOR OPTICAL OVER ETHERNET - According to one general aspect, a method may include receiving, from an optical transmitter, an optical signal that includes information. In some embodiments, the method may include encapsulating at least a portion of the received information into an Ethernet packet. In various embodiments, the method may include associating a control word with the Ethernet packet. In such an embodiment, the control word may include a status portion that indicates a status of at least a portion of the network including the networking apparatus, and an ordinal number configured to facilitate the re-construction of the information included by the optical signal. In various embodiments, the method may include transmitting the Ethernet packet to a networking apparatus. | 06-23-2011 |
20110150467 | MULTIPLEXING AND DEMULTIPLEXING APPARATUS AND METHOD OF MULTI-WAVELENGTH OPTICAL SIGNAL - Provided are a multiplexing and demultiplexing apparatus and method of a multi-wavelength optical signal that may dispose each of thin film filters in a location where a zigzag reflection occurs in a zigzag optical path, and thereby multiplex or demultiplex a multi-wavelength optical signal using the thin film filters. Each of the thin film filters may transmit an optical signal having a predetermined wavelength which is incident at a predetermined incidence angle, and reflect a remaining wavelength optical signal at a predetermined reflection angle. | 06-23-2011 |
20110150468 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device includes a control signal generating unit to generate a control signal for each of a plurality of second frames, and a mapping unit to map a payload signal of the plurality of second frames in a payload area of a first frame, and map at least some of the control signals generated by the control signal generating unit in a control signal area of the first frame. | 06-23-2011 |
20110170866 | Transporting Optical Data Units In An Optical Transport Network - According to one embodiment, transporting Optical Data Units in an Optical Transport Network comprises receiving a first frame of a first type that includes second frames of a second type. Each second frame is associated with a signal having a client clock rate, and at least two second frames are associated with at least two signals with different client clock rates. The following is repeated for each second frame: determining a client clock rate of the signal associated with the second frame; and inserting clock justification information into the second frame. The clock justification information indicates how to justify the client clock rate of the second frame to synchronize the client clock rate with a system reference clock rate. | 07-14-2011 |
20110176804 | Method And Systems For Implementing High-radix Switch Topologies On Relatively Lower-radix Switch Physical Networks - Embodiments of the present invention are directed to implementing high-radix switch topologies on relatively lower-radix physical networks. In one embodiment, the method comprises constructing the physical network ( | 07-21-2011 |
20110188856 | OPTICAL SWAPPING OF DIGITALLY-ENCODED OPTICAL LABELS - A method and a device are provided for swapping optical labels in an optical communication network. Optical information, including payload data and label data digitally encoded into the optical information, is received. At least one group of bits within the optical information is selectively inverted to rewrite the label data with new label data without changing the payload data. Each of the at least one group of inverted bits includes at least two bits and all bits of each of the at least one group of inverted bits are contiguous bits. | 08-04-2011 |
20110188857 | LABEL SWITCHING METHOD, APPARATUS AND SYSTEM - A label switching method is provided. When a Passive Optical Network (PON)-based Label Switching Path (LSP) is established, a PON logical service transmission channel is established between an Optical Line Terminal (OLT) and an Optical Network Unit (ONU). According to an identifier (ID) of the PON logical service transmission channel as a PON label, a PON-based Forwarding Information Base (FIB) table on the ONU is updated, and a PON-based Label Forwarding Information Base (LFIB) table on the OLT is updated, where the PON-based LFIB table records a forwarding relationship between an ingress port plus an ingress label and an egress port plus an egress label, and the PON-based FIB table records a forwarding relationship between the ingress port plus a destination address and the egress port plus the egress label. Therefore, the problems between network segments of different forwarding characteristics, protocol variation, inter-segment conversion, and mapping and control complexity are avoided. | 08-04-2011 |
20110200330 | Increasing the Number of Domain identifiers for Use by a Switch in an Established Fibre Channel Switched Fabric - The number of domain identifiers is incrementally increased for use by a switch in an established fibre channel switched fabric. In other words, the number of domains assigned to a switch by the Principal Switch of the fibre channel switched fabric is increased without triggering the reconfiguration of the established fibre channel switched fabric. In one implementation, incrementally adding one or more additional domain identifiers includes requesting said one or more additional domain identifiers from a Principal Switch of the fibre channel switched fabric using a different World Wide Name (WWN) than used to acquire the original one or more domain identifiers used by the switch. | 08-18-2011 |
20110200331 | OPTICAL LINE TERMINAL, METHOD AND SYSTEM FOR PACKET TRANSMISSION IN OPTICAL COMMUNICATION SYSTEM - In the field of communications, a method and a system for packet transmission in an optical communication system, and an Optical Line Terminal (OLT) are provided. The method includes: receiving, from a port, a first uplink packet from an Optical Network Unit (ONU), where the first uplink packet includes a Logical Link Identifier (ID); determining a first ID corresponding to the first uplink packet, where the first ID includes an ONU ID or a Port ID; acquiring a Multiprotocol Label Switching (MPLS) tunnel label according to the Logical Link ID and the first ID; and transmitting a second uplink packet on an MPLS tunnel corresponding to the MPLS tunnel label, where the second uplink packet includes data in the first uplink packet and the MPLS tunnel label. The system includes an ONU and an OLT. By establishing a corresponding relation of a logical link, created between the OLT and the ONU, and the MPLS tunnel, mapping between the logical link and the MPLS tunnel is realized, so that the service configuration has an unlimited capacity and becomes more flexible. | 08-18-2011 |
20110211833 | NETWORK DEVICE WITH UNINTERRUPTIBLE POWER SUPPLY FUNCTION - A network device with an uninterruptible power supply function is provided. The network device includes a network physical transmission unit, a power connecting part and a backup power supply module. The network physical transmission unit is operated at a user terminal according to a fiber to the home (FTTH) technology or a fiber to the building (FTTB) technology. The power connecting part is in communication with an external power source for receiving electricity from the external power source to operate the network device. If the electricity transmitted from the external power source to the network device is interrupted, the backup power supply provides backup electricity to the network device to maintain normal operation of the network device. | 09-01-2011 |
20110229131 | VERSATILE OPTICAL NETWORK INTERFACE METHODS AND SYSTEMS - Methods and systems for implementing versatile optical terminals that detect optical transmission protocols and subsequently adapt to the correct protocol are disclosed. In an embodiment, an interface device for providing an interface for a first network with a passive optical network (PON) is disclosed. The interface device includes a protocol detection circuit for determining whether optical communication signals received from the PON conform to a first optical communication protocol, and a switchover control circuit that reconfigures the interface device to work with a second optical communication protocol when the received optical communication signals do not conform to the first optical communication protocol. | 09-22-2011 |
20110236018 | IN-BAND CONTROL PLANE AND MANAGEMENT FUNCTIONALITY IN OPTICAL LEVEL ONE VIRTUAL PRIVATE NETWORKS - A method performed by an optical node, operating as a first network edge device of an optical layer one virtual private network (L1VPN), includes generating, by a first module of the optical node, a first optical data frame, where the first optical data frame includes an L1VPN overhead, and where the L1VPN overhead includes a control plane communication field; generating, by a second module of the optical node, a first control plane message for a second network edge device of the optical L1VPN, where the second network edge device is connected to the first network edge device across a provider network via an optical L1VPN link; incorporating, by the first module, the first control plane message into the control plane communication field of the first optical data frame; and transmitting, by the first module, the first optical data frame to the second network edge device via the optical L1VPN link. | 09-29-2011 |
20110243557 | METHOD AND SYSTEM FOR REDUCING CROSS-PHASE MODULATION IN AN OPTICAL SIGNAL - A method for reducing cross-phase modulation in an optical signal includes receiving an optical signal comprising a plurality of channels, wherein the information being communicated in a first set of one or more of the channels is modulated using one or more single-polarization modulation techniques and wherein the information being communicated in a second set of one or more of the channels is modulated using one or more dual-polarization modulation techniques. The method also includes splitting the optical signal into at least a first copy of the optical signal and a second copy of the optical signal and terminating the second set of channels in the first copy. Furthermore, the method includes applying a differential group delay to the second copy, the differential group delay introducing a walk-off between symbols communicated in a first polarization component of the second set of channels and the symbols of a second polarization component of the second set of channels. In addition, the method includes terminating the first set of channels in the second copy, combining the first set of channels in the first copy and the second set of channels in the second copy, and forwarding the combined channels. | 10-06-2011 |
20110249969 | POWER OPTIMIZATION OF OPTICAL RECEIVERS - An optical receiver system is disclosed. The system includes a local oscillator, a mixer and a processor. The local oscillator is configured to generate a laser signal to indicate a selection of one of a plurality of channels. In addition, the mixer is configured to receive signals on the plurality of channels and to utilize the laser signal to distinguish the signal on the selected channel. Further, the processor is configured to maximize a power level difference between the laser signal and at least one of the plurality of channels based on a total number of the plurality of channels by adjusting the power of the laser signal input to the mixer to limit a noise penalty in the receiver system. | 10-13-2011 |
20110255867 | PHASE SELECTOR - A phase selector including a plurality of buffers, a multiplexer, a first inverter, and a selecting circuit is provided. Each of the buffers provides a clock signal, and the clock signals have different phases. The multiplexer selectively outputs one of the clock signals as a switch signal according to a first control signal, wherein the first control signal is first portion of bits of a selecting signal. The input terminal of the first inverter receives a second control signal, wherein the second control signal is second portion of bits of the selecting signal, and the output terminal of the first inverter outputs an inverted signal. The selecting circuit transmits the second control signal of the selecting signal or the inverted signal to the output terminal of the phase selector according to the logic state of the switch signal. | 10-20-2011 |
20110255868 | METHOD AND A DEVICE OF SERVICE MIGRATION IN AN AUTOMATICALLY SWITCHED OPTICAL NETWORK - A method and a device of service migration in an automatically switched optical network are disclosed in the present invention, and the method includes: when receiving a migration indication message, a migration node sending an cross information checking request to a transmission plane (S | 10-20-2011 |
20110262134 | Hardware Accelerated Data Frame Forwarding - Systems and methods to forward data frames are described. A particular method may include evaluating header data of a data frame at a bridge element, where the header data includes address data that corresponds to a Fiber Channel Forwarder in communication with the bridge element. Based upon the evaluation, the header data of the data frame may be modified at the bridge element in such a manner that the data frame is not routed through the Fiber Channel Forwarder. | 10-27-2011 |
20110262135 | METHOD AND APPARATUS FOR INCREASING OVERALL AGGREGATE CAPACITY OF A NETWORK - Example embodiments of the present invention relate to increasing an aggregate capacity of a network without using a centralized switch fabric. A method and corresponding apparatus in an example embodiment of the present invention relates to increasing overall aggregate capacity of a switching system. The example embodiment includes a first switching shelf having a first predetermined aggregate capacity, and multiple second switching shelves having a second predetermined aggregate capacity. The second predetermined aggregate capacity is less than the first predetermined aggregate capacity. The example embodiment increases the overall aggregate capacity as a function of connections between the first switching shelf and the multiple second switching shelves. The shelves are interconnected with interconnection links and can be configured to connect to additional shelves as the switching system grows to larger sizes. Embodiments can increase capacity while reducing cost within a network node. | 10-27-2011 |
20110268440 | OPTICAL SWITCHING APPARATUS AND METHOD FOR AN eNB - The present invention provides an optical switching apparatus and method of an eNB. The above apparatus includes: a fiber transceiver module ( | 11-03-2011 |
20110268441 | CONFIGURABLE POINT-TO-POINT OPTICAL COMMUNICATIONS SYSTEM BETWEEN SERVERS - A configurable optical communications system ( | 11-03-2011 |
20110280571 | SIGNAL PROCESSING DEVICE AND METHOD, AND INFRARED MULTI-CHANNEL RECEIVER - A signal processing device includes an amplifier, a filter module, a demodulation module and a band control module. When the band control module controls the filter module to output a specific single-channel signal, the resonator of the demodulator is switched to resonate the selected single-channel signal. Then the selected single-channel signal is demodulated. A signal processing method and an infrared multi-channel receiver are also described herein. | 11-17-2011 |
20110280572 | CONVERGED NETWORK EXTENSION - One embodiment of the present invention provides a switch. The switch includes a first port configured to receive Transparent Interconnection of Lots of Links (TRILL) traffic; a second port configured to receive Fibre Channel (FC) traffic; and a third port configured to transmit received TRILL or FC traffic based on a Fibre Channel over IP (FCIP) protocol. | 11-17-2011 |
20110286743 | FLOW-CONTROL METHODS AND SYSTEMS FOR MULTIBUS SYSTEMS - Methods and systems are provided that prevent buffer overflow in multibus systems. In one aspect, a method for controlling the flow of data in a multibus system includes, for each node having an associated broadcast bus in the multibus system, generating status information regarding available data storage space of each receive buffer of the node. The method includes broadcasting the status information to the other nodes connected to the broadcast bus and collecting status information regarding the available storage space of receive buffers of the other nodes connected to the broadcast bus. The method also includes determining whether or not to send data from the node to at least one of the other nodes over the broadcast bus based on the collected status information. | 11-24-2011 |
20110286744 | METHOD AND APPARATUS FOR TRANSMITTING PACKET IN OPTICAL TRANSPORT NETWORK - A method of transmitting a packet in an optical transport network includes: generating a GFP frame by GFP encapsulating a packet client signal; mapping the GFP frame to a dynamic data unit; multiplexing to a high order data unit in an order higher than that of the dynamic data unit using at least one dynamic data unit; generating a high order transport unit using the multiplexed high order data unit; and transmitting the high order transport unit. | 11-24-2011 |
20110293270 | OPTICAL RECEIVER AND OPTICAL TRANSFER APPARATUS - It is provided an optical receiver comprising a compensator, a compensation controller and a clock extractor. The optical receiver selects first and second values, and obtains a stabilization time necessary to change the dispersion value and a transition time shorter than the stabilization time, compensates the received optical signal using the selected first value, changes the dispersion value from the first value into the second value, compensates the received optical signal using the dispersion value when the transition time has passed since starting to change the dispersion value, creates second extraction information of the dispersion value after the transition time, compensates for dispersion of the optical signal using an dispersion value calculated based on the second value and the difference between the dispersion value after the transition time and the second value in a case where the created second extraction information indicates that the clock extraction is available. | 12-01-2011 |
20110293271 | SYSTEMS AND METHODS FOR ENABLING DIFFERENT NETWORK NODES OF A NETWORK ACESS SYSTEM TO SHARE A BACKHAUL COMMUNICATIONS LINK - Systems and methods for enabling different network nodes of a network access system to share a backhaul communication link are disclosed. In one embodiment, the method includes: connecting a first modem to a first node of the network access system; connecting a second modem to a second node of the network access system; connecting the first modem to a first port of a splitter filter; connecting the second modem to a second port of the splitter filter; and connecting a backhaul communication link to a third port of the splitter filter, which is configured to multiplex signals transmitted by the modems onto the backhaul communication link, wherein the frequency spectrum of the signal transmitted by the first modem does not overlap substantially with the frequency spectrum of the signal transmitted by the second modem. | 12-01-2011 |
20110293272 | OPTICAL SWITCH WITH POWER EQUALIZATION - An optical intensity control system for use with an optical switch providing individual signal paths between input and output ports. The system has a optical splitters connectable to output multiplexers of the switch and also has variable optical intensity controllers (VOICs) for insertion into the individual signal paths. The VOICs individually control the intensity of optical signals present in the signal paths in accordance with intensity control signals. An equalizer is connected to the splitters and to the VOICs, for producing an estimate of the optical power of each individual switched optical signal and generating the intensity control signals. The equalizer is adapted to controllably isolate individual switched optical signals. In this way, individual and independent control of the power on each optical channel is provided, wavelength-dependent losses introduced by all the devices in the switch including the WDM devices at the output of the switch are accounted for and one optical coupler is required for each output optical fiber. Coarse equalization may be provided for each multiplexed optical signal either at the switch input or output, permitting a reduction in the dynamic range over which the VOICs inside the switch are required to operate. | 12-01-2011 |
20110305456 | OPTICAL ROUTER - An optical routing element may include a planar dielectric photonic crystal which includes a lattice of holes having a first linear defect adjacent a second linear defect, with the two defects being separated by a central row of lattice holes. The first linear defect in the lattice of holes may form a first single mode line defect waveguide, and the second linear defect in the lattice of holes may form a second single mode line defect waveguide. Optical energy may be selectively coupled between the first and second waveguides across the central row of lattice holes. A free-carrier injector may be included to inject free-carriers into the dielectric photonic crystal, activation of which may alter selectivity of the optical coupling between the first and second waveguides. A plurality of optical routing elements with associated free-carrier injectors may be interconnected to form a bi-directional optical routing array. | 12-15-2011 |
20110311226 | Methods and Systems for Distributing Fiber Optic Telecommunication Services to Local Areas and for Supporting Distributed Antenna Systems - A fiber optic network includes a fiber distribution hub including at least one splitter and a termination field; a plurality of drop terminals optically connected to the fiber distribution hub by a plurality of distribution cables; and a distributed antenna system (DAS). The DAS includes a base station and a plurality of antenna nodes. The base station is optically connected to the fiber distribution hub and the antenna nodes are optically connected to the drop terminals. Example splitters include a passive optical power splitter and a passive optical wavelength splitter. Signals from a central office can be routed through the passive optical power splitter before being routed to subscriber locations optically connected to the drop terminals. Signals from the base station can be routed through the wavelength splitter before being routed to the antenna nodes. | 12-22-2011 |
20110318002 | PASSIVE OPTICAL NETWORK PROCESSOR WITH A PROGRAMMABLE DATA PATH - A passive optical network (PON) processor comprises a packet processor for processing packets belonging to a certain flow through a plurality of processing stages of a programmable data-path; a microprocessor-data for performing one or more user-defined functions in the programmable data-path on designated packets belonging to the certain flow, wherein packets of respective flows to be processed by the microprocessor-data are designated in a flow table; a microprocessor-control for managing connections handled by the PON processor; a data-path bus for connecting the packet processor and the microprocessor-data, wherein the designated packets are transferred between the packet processor and the microprocessor-data on the data-path bus; and a control-path bus for connecting the packet processor and the microprocessor-control. | 12-29-2011 |
20110318003 | OPTICAL SWITCHING AND TERMINATION APPARATUS AND METHODS - Methods and apparatus for selective subscriber service connect and disconnect in a fiber-optic network. In one embodiment, disconnect is achieved by the purposeful use of signal attenuation due to macrobending losses within the optical fiber. In another embodiment, the macrobending optical switch apparatus is used to merely decrease signal intensity to the point where the value of the service cannot be received. In a further embodiment, the macrobending signal loss is used to protect the network from unwanted interference signals that may disturb the network operation. In another embodiment, the macrobending switch apparatus is used to selectively induce chromatic dispersion within one or more wavelengths of light being carried on the fiber, thereby providing for range-selective service disconnect or denial. Optical multiplexer apparatus is also utilized to remotely connect ore reconnect service to selected subscriber premises or network nodes. | 12-29-2011 |
20110318004 | TRANSMISSION AND ROUTING OF OPTICAL SIGNALS - Methods and apparatus for routing and transmission of inverse multiplexed signals over optical communications networks are described. A method for routing includes determining a plurality of paths for transmission of a plurality of inverse-multiplexed optical signals from a source node to a destination node of an optical network. Each path is for transmission of at least one of the inverse-multiplexed optical signals. A latency difference between a fastest one of said paths and a slowest one of said paths is less than a predetermined time period. | 12-29-2011 |
20110318005 | POLARIZATION MULTIPLEXING OPTICAL TRANSMISSION SYSTEM, POLARIZATION MULTIPLEXING OPTICAL RECEIVER AND POLARIZATION MULTIPLEXING OPTICAL TRANSMISSION METHOD - A polarization multiplexing optical receiver according to the invention includes a polarization splitting unit receiving polarization multiplexed lights which are modulated according to a first input signal and a second input signal including respective identifier, and splitting the polarization multiplexed light into a first polarized received light and a second polarized received light, a pair of photoelectric conversion units, a demodulation unit performing symbol recognition about the first received signal and the second received signal, and outputting a first demodulated signal and a second demodulated signal, an identifier detecting unit detecting the identifiers from the first demodulated signal and the second demodulated signal, and a delay compensation unit calculating a delay difference between the first demodulated signal and the second demodulated signal based on the identifiers, and inserting delay time corresponding to the delay difference into the first demodulated signal or the second demodulated signal. | 12-29-2011 |
20120008943 | OPTICAL SWITCHING NETWORK - Systems and methods are disclosed for a method to communicate over an optical network by using hop-by-hop routing over an optical network; and dynamically constructing a network topology. | 01-12-2012 |
20120008944 | OPTICAL SWITCHING NETWORK - Systems and methods are disclosed for a method to communicate over an optical network by using hop-by-hop routing over an optical network; and dynamically constructing a network topology. | 01-12-2012 |
20120033967 | METHOD, SYSTEM, AND APPARATUS FOR TRANSMITTING IPV6 MESSAGE IN PASSIVE OPTICAL NETWORK - Embodiments of the present disclosure provide a method for transmitting an Internet Protocol version 6 (IPv6) message in a Passive Optical Network (PON). The method includes: receiving a Router Advertisement (RA) message comprising Optical Line Terminal (OLT) port information, Optical Network Unit (ONU) port information, and an IPv6 address prefix; binding the IPv6 address prefix with an OLT port indicated by the OLT port information; and sending the RA message to an ONU through the OLT port, so that the ONU binds the IPv6 address prefix with an ONU port indicated by the ONU port information and provides the RA message for a user terminal through the ONU port. Embodiments of the present disclosure further disclose a PON system and an apparatus for transmitting an IPv6 message in a PON. | 02-09-2012 |
20120045203 | SYSTEM AND METHOD FOR DETERMINING NON-FRAGMENTATION FOR COMMUNICATION OF PACKETS - A system and method for determining non-fragmentation for communication of data packets includes generating a plurality of packets and storing in a cell-list at least one cell-value indicating a transmission duration of at least one of the packets in units of cell-size, where the cell-size represents a fixed, predetermined time required to transmit at least a minimum length packet. This facilitates determining non-fragmentation for communication of packets having reduced complexity, lower memory requirements, and shorter processing time than conventional techniques. The complexity is O(1), in contrast to conventional non-fragmentation techniques that have complexities O(N). Corresponding to the reduced complexity, the processing time is shorter than for conventional techniques. Depending on the application, the current embodiment has lower memory requirements than conventional non-fragmentation techniques. | 02-23-2012 |
20120045204 | Network with a Fast-Switching Optical Core Providing Widely Varying Flow-rate Allocations - Multiple switch planes, each having meshed bufferless switch units, connect source nodes to sink nodes to form a communications network. Each directed pair of source and sink nodes has a first-order path traversing a single switch unit in a corresponding switch plane and multiple second-order paths each traversing two switch units in one of the remaining switch planes. To reduce processing effort and minimize requisite switching hardware, connectivity patterns of source nodes and sink nodes to the switch planes are selected so that each pair of source node and sink node connects only once to a common switch unit. Widely-varying flow rates may be allocated from each source node to the sink nodes. To handle frequent changes of flow-rate allocations, in order to follow variations of traffic distribution, a high-throughput scheduling system employing coordinated multiple scheduler units is provided in each switch plane. | 02-23-2012 |
20120063776 | HYBRID SWITCH FOR OPTICAL NETWORKS - An optical switch and switching system includes a large scale switching device with a first input, a second input, a first output, and a second output. A small scale switching device includes a third input, a fourth input, and a third output, wherein the third input of the small scale switching device is coupled to the first output of the large scale switching device and the fourth input of the small scale switching device is coupled to the second output of the large scale switching device. A controller establishes a cross connect in the large scale switching device between the second input and the second output. The small scale switching device switches from the third input to the forth input upon establishment of the cross connect in the large scale switching device, | 03-15-2012 |
20120082451 | Method and System for Arranging Link Resource Fragments - The present invention relates to the field of optical communication and provides a method and system for arranging link resource fragments. The method comprises: configuring cascade services in a link in advance; generating a preset arrangement method according to an initial channel number of occupied channel(s) in the link and a cascade number of service born in the channel(s) (S | 04-05-2012 |
20120082452 | Implement method of resource reservation protocol with multi-services convergence transmission for optical burst switching networks - An implement method of reservation protocol with multi-services convergence transmission for OBS networks differentially processes the synchronous service flow and the asynchronous service flow, and assembles multiple different types service data into different data burst (DB) by generalized optical-burst paradigm. It functionally expands burst control packet (BCP) and classifies the BCP into two categories: routine burst control packet (R-BCP) and synchronous trace burst control packet (T-BCP). Then it can differentially reserve wavelength channel resource and preempt resource to try to keep the transmission features of synchronous service such as period, low delay jitter and low dropping probability on the base of ensuring the basic QoS requirements of various kinds of service, and realize that a single OBS network efficiently provides asynchronous service and synchronous service. | 04-05-2012 |
20120093505 | METHOD AND SYSTEM FOR SERVICE-BASED REGULATION OF TRAFFIC FLOW TO CUSTOMER PREMISES DEVICES - A method of regulating traffic flow to customer premises devices (CPDs) reachable via outside plant units (OPUs). The method comprises receiving first packets in a first traffic category via a first interface, the first packets being destined for respective CPDs; receiving second packets in a second traffic category via a second interface, the second packets being destined for respective CPDs; determining a destination OPU for each of the first and second packets. For each particular OPU that is the destination OPU for one or more packets, the packets are buffered and transmitted via an OPU interface for the particular OPU. The destination OPU for a particular packet is determined by identifying the OPU via which the CPD for which the particular packet is destined is reachable. Packet flow via the OPU interface is regulated by prioritizing transmission of first packets over transmission of second packets. | 04-19-2012 |
20120099858 | HIGHLY SCALABLE OSPF ROUTING IN SUPPORT OF FULL MESH OPTICAL NETWORKS - A method for enabling Open Shortest Path First (OSPF) routing in a transport network. The method comprises defining a network segment template; instantiating a respective network segment template for each node+link segment of the transport network; and connecting the link area of a first template instance to the node area of a second template instance using a remote ABR. The network segment template comprises a node area for enabling OSPF routing between addresses within a node of the transport network; a link area for enabling OSPF routing between the node and an adjacent neighbour node in the transport network; and a host Area Boarder Router (ABR) connected to the node area and the link area. The host ABR is configured to generate summary Link State Advertisement (LSA) messages containing a summary of addresses in the node area, and forward the summary LSA messages through the link area. The remote ABR is configured to generate summary LSA messages containing a summary of addresses reachable in the node area of the second template instance, and forward the summary LSAs through the link area of the first template instance. | 04-26-2012 |
20120099859 | OPTICAL PACKET SWITCHING APPARATUS - An optical packet switching apparatus includes an optical switch unit for switching the route of a received optical packet signal and output the received optical packet signal, and an optical switch control unit for extracting destination information from the received optical packet and generating a control signal for the optical switch unit according to the destination information. The optical switch control unit includes a clock generator for generating a plurality of local clocks of different phases, and a clock selector for selecting a local clock having the smallest phase difference with the received optical packet from the plurality of local clocks. The optical switch control unit generates the control signal using the local clock selected by the clock selector as an operation clock. | 04-26-2012 |
20120099860 | METHOD AND EQUIPMENT FOR OPERATING A COHERENT OPTICAL PACKET RECEIVER - The present invention refers to a method for operating a coherent optical packet receiver comprising at least one linear physical impairment compensation filter wherein the settings of at least one linear physical impairment compensation filter applied on a received optical packet having at least one given travelling parameter are determined in function of previous settings determination of said at least one linear physical impairment compensation filter achieved on at least one optical packet having a similar at least one travelling parameter as said received optical packet. | 04-26-2012 |
20120099861 | Method, apparatus, and system for managing label of access network - The present invention relates to the field of network communications. An Optical Line Terminal (OLT) allocates a Pseudo Wire (PW) label of an access segment PW for a port, and establishes a corresponding relationship between the port information and the PW label; and carries the corresponding relationship between the port information and the PW label in a label management message, and sends the label management message to an Optical Network Unit (ONU) so that the ONU updates a forwarding table, in which the label management message adopts an access network management protocol. As a consequence, a problem of supporting Pseudo Wire Emulation Edge-to-Edge (PWE3) on a data plane of an access segment of an access network is solved under the conditions that device complexity of the ONU is not increased and a configuration of the ONU is slightly changed. | 04-26-2012 |
20120099862 | METHOD FOR ASSIGNING AND PROCESSING A LABEL IN AN OPTICAL NETWORK, OPTICAL COMMUNICATION DEVICE, AND OPTICAL COMMUNICATION SYSTEM - The present invention discloses a method for assigning and processing a label in an optical network. The method includes: learning that a label switched path is required to be established in an optical network; generating a label, in which the label is used for indicating that a first optical channel data unit is multiplexed to a second optical channel data unit; the label includes a tributary slot type indication field that is used for indicating a tributary slot type of the second optical channel data unit, and the label further includes a tributary slot assignment indication field that is used for indicating a tributary slot occupied in the second optical channel data unit into which the first optical channel data unit is multiplexed; and sending the label to a node on the label switched path by a signaling message of GMPLS. | 04-26-2012 |
20120106954 | METHOD FOR UPDATING PORTS IN A PHOTONIC-BASED DISTRIBUTED NETWORK SWITCH - A photonic-based distributed network switch is described that updates independent ports of the switch in parallel based on information that flows through the ports to and from a passive photonic broadcast star. Because each port sees the same information via the passive photonic broadcast star, each port can harvest information from the data flow in parallel and update itself based on the harvested information. | 05-03-2012 |
20120106955 | METHOD FOR PROCESSING A RESOURCE RESERVATION REQUEST AND RELATED DEVICE AND NODE DEVICE - A method and apparatus are provided for processing a delayed resource reservation request in an optical telecommunication network for transferring data between a source device and a destination device, wherein the control plane is different from the transfer plane. Upon a node device of the network receiving the resource reservation request sent from the source device to the destination device via a path including at least one node device, the request containing at least one first parameter relating to the start of the connection at the source device, the method includes the following steps: obtaining information relating to a signal transfer time via the path up to an upstream node device; updating the information by adding a signal transfer time at the intermediate equipment; and calculating a date for the start of the resource reservation at the node device using the value of the first received parameter and the information. | 05-03-2012 |
20120121261 | TECHNOLOGY FOR ARRANGING OPTICAL CHANNELS IN SWITCHING OPTICAL EQUIPMENT - A reconfigurable optical switching device comprising a Tunable Filters Array (TFA) unit incorporating tunable optical filters, wherein the arrangement is such that one and the same TFA unit is utilized both for performing a drop function of the device in a colorless and reconfigurable manner, and a through function of the device in a reconfigurable manner. | 05-17-2012 |
20120128352 | OPTICAL PACKET SWITCHING APPARATUS - An optical packet switching apparatus includes an optical coupler, an optical switch unit, and an optical switch control unit. The optical switch control unit includes an optical-to-electrical converter, a serial/parallel converter, an arrangement detector, a rearrangement unit, a frame synchronization unit, a route detector, a control signal generator, and an adjustment unit for adjusting the timing with which to output an optical switch control signal to the optical switch unit, based on arrangement information on a frame synchronization pattern fed from the arrangement detector. | 05-24-2012 |
20120128353 | METHOD AND APPARATUS FOR MIGRATING SUB-NETWORK CONNECTION PROTECTION (SNCP) SERVICE - The present invention discloses a method and an apparatus for migrating a Sub-Network Connection Protection (SNCP) service. The method comprises: receiving a migration request of an SNCP service, wherein the migration request comprises one of: Permanent Connection (PC) to Soft Permanent Connection (SPC) migration, SPC to PC migration; respectively setting cross status control bits of a current operation connection and a correlative connection thereof according to the received migration request, and performing collective migration of the current operation connection and the correlative connection thereof according to the set cross status control bits; respectively modifying the cross status control bits of the current connection and the correlative connection thereof according to the migration result. The consistency of cross management authorities of a working connection and a protection connection of the SNCP service migration can be ensured by the present invention. | 05-24-2012 |
20120128354 | DISTRIBUTED SCHEDULING FOR AN OPTICAL SWITCH - Scheduling methods and apparatus for use with optical switches with hybrid architectures are provided. An exemplary distributed scheduling process achieves 100% throughput for any admissible Bernoulli arrival traffic. The exemplary distributed scheduling process may be easily adapted to work for any finite round trip time, without sacrificing any throughput. Simulation results also showed that this distributed scheduling process can provide very good delay performance for different traffic patterns and for different round trip times associated with current switches. | 05-24-2012 |
20120134672 | Fiber Channel Identifier Mobility for Fiber Channel and Fiber Channel Over Ethernet Networks - Techniques are provided for a switch to assign proxy FCIDs to endpoint device so that the endpoint devices may achieve FCID mobility by retaining their originally assigned FCIDs. At a switch in a network, e.g., a Virtual Storage Area Network (VSAN), a fabric login request is received from a first endpoint device that is associated with a first FC identifier (FCID) that was previously assigned to the first endpoint device by another switch in the VSAN. The fabric login request is responded to with the first FCID. The first endpoint device is assigned a second FCID associated with a domain of the switch where the endpoint device is directly attached to, and the second FCID is used as a proxy FCID within the VSAN for the first endpoint device. A frame is received from the first endpoint device with a source FCID comprising the first FCID and a destination FCID comprising an FCID for a second endpoint device. The source FCID in the frame is overwritten with the second FCID. The frame is forwarded to the second endpoint device. | 05-31-2012 |
20120141124 | INTERCONNECTION SYSTEM AND METHOD - The present disclosure provides a system, apparatus and method to transport data across a network node, as part of a network infrastructure of an optical transmission system. According to the various embodiments of the disclosure, a base architecture is provided which includes interconnectivity providing high throughput, while mitigating factors which may lead to signal loss or signal degradation. The base architecture is easily expandable to accommodate additional traffic. | 06-07-2012 |
20120141125 | OPTICAL BANDWIDTH CONTROL DEVICE - An in-line optical control device, method, and computer-readable medium for controlling bandwidth in a dry fiber line are provided herein. The in-line optical control device includes a splitter, an optical switch, and a processing device. The splitter may be configured to split an input signal. The optical switch may be configured to receive and selectively connect a first portion of the split input signal to the dry fiber line. The optical switch may thereby control a rate of data transmitted over the dry fiber line. The processing device may be configured to control the optical switch based on whether a characteristic of the input signal conforms to a predetermined limit using a second portion of the split input signal. The processing device may thereby control bandwidth in the dry fiber line. | 06-07-2012 |
20120141126 | Method, Device And System For Automatically Discovering Optical Fiber Connection Within Network Element - A method, device and system for automatically discovering optical fibre connection within a network element are provided. In the method, a destination board determines whether it is connected with a source single board for the first time according to a triple group message received within a predefined period and sent by the source single board, and if yes, sends a sextuple group message generated based on its triple group message to an ASON, and stores the sextuple group message in a local database; otherwise, it sends the sextuple group message stored in the local database and corresponding to the triple group message, to the ASON when timing is reached; when receiving the sextuple group message and determining that the sextuple group message is not stored locally, the ASON detects validity of a connection corresponding to the sextuple group message, and locally stores the sextuple group message if the connection is valid, otherwise, displays connection error information to a user. | 06-07-2012 |
20120141127 | ELECTRON BEAM SWITCH - The present invention is directed to an electron beam crossbar switch for interconnection between communication units. The crossbar switch includes an array of electrically charged particle emitter source devices with an input connected to a slow wave structure coupled to the emitter source. An array of detectors is positioned relative to the array of emitter devices for receiving charged particles from various of the emitter devices. X and y deflection means are positioned adjacent each of the emitters for directing the charged particles from each of the emitters to at least one of the detectors to provide more signal output and a reduction in deflection accuracy. | 06-07-2012 |
20120148238 | ARCHITECTURE TO SCALE AN IP/MPLS NETWORK VIA MULTIPLE NETWORK PLANES - An architecture is provided for a core network of a service provider. Intra-connect routers operate multiprotocol label switching under Internet protocol for packets. Network planes are coupled in parallel to the intra-connect routers to form the core network for the service provider. Each of the network planes is defined by a maximum optical load capacity of an optical switch. | 06-14-2012 |
20120148239 | OPTICAL PACKET SWITCHING APPARATUS, OPTICAL PACKET SWITCHING SYSTEM, AND OPTICAL PACKET IN-LINE AMPLIFIER APPARATUS - An optical packet switching apparatus includes (i) an optical packet switch for switching the route of an inputted optical packet signal and outputting the inputted optical packet signal, (ii) an input-side packet density monitoring unit for detecting the packet density of optical packet signals inputted to the optical packet switch, (iii) a first input-side optical amplifier provided on an input side of the optical packet switch, (iv) a first input-side variable optical attenuator (VOA) provided posterior to the optical amplifier, (v) a storage for storing the gain characteristics in relation to the packet density at the first input-side optical amplifier, and (vi) an input-side VOA control unit for controlling the attenuation by the first input-side VOA in such a manner as to compensate for the gain fluctuations due to the variations in the packet density at the first input-side optical amplifier, based on the packet density and the gain characteristics. | 06-14-2012 |
20120148240 | RESERVING A PATH USING GMPLS EXTENSIONS FOR ODU SIGNALLING - A method of requesting reservation of a label switched path (LSP) for traffic of a type compatible with ITU-T G709 amendment 3, in an optical transport network by sending a RSVP-TE path message for the reservation of the requested LSP from an ingress node of the requested path, via intermediate nodes along the path to an egress node, and sending a RSVP-TE resv message from the egress node, to cause the nodes to reserve resources for the requested path. The path message has a signal type field having values assigned to indicate traffic types specified in G.709 amendment 3 beyond those specified by G.709 pre amendment 3, without reuse of values specified by G.709 pre amendment 3. Since the nodes along the path can still distinguish in the signal type field any values of the signal type field specified by G.709 pre amendment 3, new nodes can still work with legacy messages. | 06-14-2012 |
20120155866 | Digital Communication Method and System - The invention is concerned with digital communication method and system for use in telephone exchanges, wireless communication systems, satellite communication systems, and alike. In the present invention, wireless switches use modulated electron beams or alike; these electron beams are deflected to target a specific user according to a unique signature assigned to that user to make a communication link between two users. In one embodiment, the switch can concurrently process data from multiple users and supports half-duplex or full-duplex allowing receiving and transmitting data at the same time. The switch can concurrently communicate with other switches and/or with mobile stations. The switch acts as a multiplexer and demultiplexer to connect users in a communication system and/or to transfer data, video and audio signals to subscribers from wireless, satellite, and/or local area networks. If the data is for a user in the same basic service set of the switch, then, via a switch controller, the switch passes the data from the receiving path to the transmitting path. As a result, the data does not have to travel out of the switch and then back to the same switch again. The present invention allows synchronous transfer mode and asynchronous transfer mode for high speed transport of digital data. | 06-21-2012 |
20120155867 | POWER MANAGEMENT IMPLEMENTATION IN AN OPTCIAL LINK - An optical link power management scheme takes the best advantage of a dynamic connection environment, where ports may be connected and disconnected at any time, and where data flows may start and stop as needed by the applications using the high speed data links. Power consumption is optimized, eye safety standards are met, and robust connection detection is preserved. | 06-21-2012 |
20120155868 | OPTICAL FIBER HUB - An optical fiber hub includes an upstream port for receiving a light signal from a upstream host, a light splitting element, N downstream ports, and a light converging element. The light splitting element is configured for splitting the light signal into N light beams. The N downstream ports are optically communicated with the light splitting element, and each of the downstream ports is used for receiving a corresponding one of the light beams and transmitting the corresponding light beam to a corresponding downstream peripheral, and receiving a light signal from the corresponding downstream peripheral, wherein N is an integer which is equal to or greater than 2. The light converging element is used for converging light signals from the N downstream ports and transmitting the converged light signals to the upstream port. | 06-21-2012 |
20120155869 | OPTICAL PACKET SWITCHING SYSTEM - An optical packet switching system includes: an optical packet switching device configured to route and output an input optical packet signal; an optical amplifier device provided in a stage subsequent to the optical packet switching device; and a dummy packet insertion device configured to insert a dummy packet in an optical packet signal prior to input to the optical amplifier device. A dummy packet includes a flag indicating that the packet is a dummy packet. | 06-21-2012 |
20120155870 | Method And Apparatus For Selectively Routing Entanglement Building - A method and apparatus ( | 06-21-2012 |
20120163812 | METHOD AND APPARATUS FOR TRANSMITTING PACKET DATA OVER OPTICAL TRANSPORT NETWORK - A packet transmitting method and apparatus in an optical transport network may be provided. The packet transmitting method may include sensing a request for transmitting a packet client signal of a predetermined capacity, during transmission operated based on an ODUflex(GFP) scheme, extending, to the predetermined capacity, a size of a connection link among a transmitting apparatus, a relay apparatus, and a receiving apparatus when the request is sensed, expanding, to the predetermined capacity, a bandwidth among the transmitting apparatus, the relay apparatus, and the receiving apparatus when the size of the connection link is extended, and transmitting the packet client signal by changing a transmission scheme from the ODUflex(GFP) scheme to an ODUk(GFP) scheme, when the bandwidth is expanded. | 06-28-2012 |
20120183291 | OPTICAL TRANSMISSION APPARATUS - An HO ODU signal input to an optical transmission apparatus is disassembled into LO ODUs. LO ODUs specified to form an aggregated ODU are disassembled not into individual LO ODUs but into a unit of an LO ODU group that forms an aggregated ODU. Clock extraction and an alarm process are performed not for the individual LO ODUs but for each aggregated ODU. This eliminates the need for a hardware configuration for performing the clock extraction and the alarm process in units of LO ODUs, leading to saving of hardware resources. | 07-19-2012 |
20120189305 | METHOD AND APPARATUS FOR ROUTES SEPARATION IN ASON SERVICES - The present invention discloses a method and an apparatus for routes separation in ASON services, wherein the method comprises: calculating a route between each of different calls or each of different services of a same call in an automatic switched optical network (ASON); wherein if there are enough network resources, then sett the routes of the respective services to be independent from each other; and if there are not enough resources, then set the routes of the respective services to be partially overlapped or completely overlapped. According to the technical solution provided by the present invention, the problem in relevant art that the routes carrying each of the services cannot be sufficiently separated or the network resources cannot be sufficiently used is solved, thus not only multiple services using the same path can be avoided but also the situation that routes cannot be found while there are enough resources can be avoided. | 07-26-2012 |
20120195591 | DUAL NETWORK TYPES SOLUTION FOR COMPUTER INTERCONNECTS - A computing system includes: a plurality of tightly coupled processing nodes; a plurality of circuit switched networks using a circuit switching mode, interconnecting the processing nodes, and handling data transfers that meet one or more criteria; and a plurality of electronic packet switched networks, also interconnecting the processing nodes, handling data transfers that do meet the at least one criteria. The circuit switched networks and the electronic packet switched networks operate simultaneously. | 08-02-2012 |
20120201535 | Multiplexing in an Optical Transport Network (OTN) - In one embodiment, a method includes receiving a plurality of signals at a plurality of ports, each of the signals having a protocol type; mapping each of the signals to one or more time slots of one of a plurality of Low Order Optical Transport Network (OTN) containers; mapping the Low Order OTN containers to a High Order OTN container; mapping the High Order OTN container to a High Order OTN envelope for communication over an OTN; and, in connection with the mapping of the High Order OTN container to the High Order OTN envelope, for each of the signals, inserting into the High Order OTN envelope information identifying the port that the signal was received at, the protocol type of the signal, the Low Order OTN container that the signal was mapped to, and one or more of the time slots that the signal was mapped to. | 08-09-2012 |
20120213515 | SERVICE GROUP AGGREGATION - Methods and systems for aggregating service groups are provided. A chain of fiber nodes in a DOCSIS system is formed to aggregate the service groups served by the fiber nodes to form a super-service group. Multiple channels of a multiplexed data stream are used to transmit the signals from the super-service group. By creating a chain of fiber nodes and using multiple channels to transmit the signals from the super-service group, a DOCSIS system can be more efficiently reconfigured to segment a super-service group once the system has become exhausted. | 08-23-2012 |
20120213516 | RESOURCE UTILIZATION METHOD AND SYSTEM - An optimal resource utilization method and system is disclosed. The method includes monitoring an optical network comprising optical cross connect (OXC) nodes comprising regenerators and connected by links. Communication paths each comprising a group of OXC nodes connected by links of said links are selected. Routing demands, working communication paths, and protection communication paths are selected. A computer processor assigns successive links a wave length and allocates regenerators to multiple successive links. The computer processor positions a first group of the regenerators along the working communication paths and positioning a second group of regenerators along the protection communication paths. | 08-23-2012 |
20120224851 | BANDWIDTH VARIABLE COMMUNICATION METHOD, BANDWIDTH VARIABLE COMMUNICATION APPARATUS, TRANSMISSION BANDWIDTH DETERMINATION APPARATUS, TRANSMISSION BANDWIDTH DETERMINATION METHOD, NODE APPARATUS, COMMUNICATION PATH SETTING SYSTEM, COMMUNICATION PATH SETTING - A bandwidth variable communication method is provided that enables effective use of frequency bandwidths in which the bit rate is constant in every optical path. The bandwidth variable communication method includes, when a network management apparatus sets or changes an optical path that passes through plural communication apparatuses, measuring or obtaining an optical signal quality deterioration amount in a route of the optical path; selecting a modulation format in which a spectrum bandwidth is the narrowest from among modulation formats by which transmission is available on conditions of the optical signal quality deterioration amount and a desired bit rate B (bit/s); and exchanging control information between the network management apparatus and a control unit of each communication apparatus on the optical path route. A bandwidth variable communication apparatus receives the control information, and changes a passband based on the received control information. | 09-06-2012 |
20120237216 | METHOD FOR TRANSMITTING DATA AND GIGABIT-CAPABLE PASSIVE OPTICAL NETWORK SYSTEM - The present invention discloses a method for transmitting data and a gigabit-capable passive optical network system, which method comprises: a transmitter carrying indication information in an uplink or a downlink frame transmitted to a receiver for enabling the receiver to discard information which does not need to be processed by the receiver in the uplink or downlink frame according to the indication information. The data type transmitted by GPON systems is expanded and the idle bandwidth is effectively handled by the present invention. | 09-20-2012 |
20120243867 | OPTICAL COMMUNICATION SYSTEM - An optical communication system is disclosed. The optical communication system includes a reflection hub connected to a plurality of communication modules. The communication modules communicate optical signals to one another via two way light channels, such that an optical signal is scattered off a diffuse surface at a distal end of the reflection hub and into the two way light channel of each communication module. | 09-27-2012 |
20120251106 | METHOD AND APPARATUS FOR MAPPING TRAFFIC USING VIRTUAL CONCATENATION - A node comprising a packet network interface, an ethernet switch, an optical port, and a distribution engine. The packet network interface adapted to receive a packet having a destination address and a first bit and a second bit. The ethernet switch is adapted to receive and forward the packet into a virtual queue associated with a destination. The optical port has circuitry for transmitting to a plurality of circuits. The distribution engine has one or more processors configured to execute processor executable code to cause the distribution engine to (1) read a first bit and a second bit from the virtual queue, (2) provide the first bit and the second bit to the at least one optical port for transmission to a first predetermined group of the plurality of circuits. | 10-04-2012 |
20120257891 | Traffic Switching In Hybrid Fiber Coaxial (HFC) Network - Embodiments enable an Ethernet over Coaxial (EoC) Coaxial Media Converter (CMC) that implements only a subset of the functions (e.g., MAC and PHY) of a cable modem termination system (CMTS). The CMC sits between an optical line terminal (OLT) and a plurality of cable modems (CMs) that it serves. From the network management side at the OLT, the CMC appears and can be managed like an optical network unit (ONU). From the subscriber side, the CMC provides the same connectivity functions to the CMs as a CMTS and serves to terminate coaxial connections from the CMs. | 10-11-2012 |
20120263462 | Network Processor for Supporting Residential Gateway Applications - A network processor for performing residential gateway processing tasks. The network processor includes a first cluster of packet processors and a second cluster of packet processors, wherein each of the first cluster and the second cluster includes a main packet processor and a secondary packet processor, wherein the main packet processor performs at least routing of incoming packets and the secondary packet processor performs off-loading tasks for the main packet processor; a plurality of Ethernet media access control (MAC) adapters for interfacing with a plurality of subscriber devices connected to a residential gateway; an external-network MAC adapter for interfacing with a wide area network (WAN) connected to the network processor; and an ingress handler for at least load balancing the processing of packets between the first cluster and the second cluster. | 10-18-2012 |
20120275785 | SYSTEMS AND METHODS FOR RECONFIGURATION OF A CIRCUIT SWITCHED RING TO A PACKET SWITCHED RING - In accordance with embodiments of the present disclosure, a method for reconfiguration of a circuit-switched ring network to a packet-switched ring network is provided. The method may include, for each adjacent pair of network elements in a network bridging traffic between the pair of network elements via a second path other than a first circuit switched-based path directly coupling the pair. The method may also include provisioning packet switched-based network interfaces on each of the pair of network elements. The method may additionally include establishing a packet switched-based path directly between the packet switched-based network interfaces. The method may further include switching traffic from the first path to the packet switched-based path. | 11-01-2012 |
20120275786 | Optical Line Termination Node and Passive Optical Network - An optical line termination node has a first connection arrangement for connecting a working fibre, a second connection arrangement for connecting a protection fibre, a transceiver arrangement having first primary link and a first secondary link, and protection switching means configured for being switched either in a working operating state or in a protection operating state. | 11-01-2012 |
20120275787 | Method and System of Centralized Control and Management for Fiber Channel Over Ethernet Networks - A fiber channel over Ethernet (FCoE) network component, comprising a first FCoE data forwarder (FDF) configured to couple to a second FDF and to a third FDF, wherein the first FDF is configured to receive a FCoE frame from the second FDF and send the FCoE frame to the third FDF, wherein the frame comprises a destination address and a fiber channel (FC) payload, and wherein the first FDF does not change the destination address of the frame when the first FDF forwards the frame to the third FDF. | 11-01-2012 |
20120275788 | METHOD AND SYSTEM FOR SHORTENING THE LENGTH OF TIME GAPS BETWEEN DATA UNITS IN A DATA SWITCHING NETWORK - A group of K data units received consecutively is arranged by a first device. The arranged K data units are sent to the inputs of M devices, and a group of H | 11-01-2012 |
20120281983 | METHOD AND APPARATUS FOR GENERATING RESIZE CONTROL OVERHEAD IN OPTICAL TRANSPORT NETWORK - There is provided a source node apparatus including: a Bandwidth Resize (BWR) generator configured to insert an InRP signal and an InTSCC signal into OPUflex Resize Control Overhead (RCOH) and to transmit the resultant OPUflex RCOH; and a BWR relay generator configured to insert an Resizing Protocol indicator (RP) signal and a Tributary Slot Connectivity Check (TSCC) signal into higher order OPUk RCOH with reference to the InRP signal and the InTSCC signal included in the OPUflex RCOH transmitted by the BWR generator, and transmit the resultant higher order OPUk RCOH. | 11-08-2012 |
20120288277 | TRANSMISSION APPARATUS AND METHOD FOR SERIAL AND PARALLEL CHANNEL INTERWORKING IN OPTICAL TRANSPORT NETWORK - A transmission apparatus and method for serial and parallel channel interworking in an optical transport network are provided. The transmission apparatus for serial and parallel channel interworking ensures interworking between parallel optical modules or between parallel and serial optical modules, regardless of a protocol, without having to add logics or with only a minimum number of logics, in order to manufacture a small-size optical module with low power consumption. | 11-15-2012 |
20120294610 | METHODS AND SYSTEMS FOR AUTOMATIC CARVING AND POLICY ENFORCEMENT FOR OPTICAL TRANSPORT NETWORK HIERARCHY - The present disclosure provides methods and systems for automatic carving of Optical channel Data Unit k (ODUk) levels on connection creation as well as the enforcement of an OTN hierarchy policy. In an exemplary embodiment, the present invention provides several methods of automatically carving Optical channel Data Tributary Unit Group (ODTUG) structures down to a desired ODUk layer during end-to-end circuit setup. These methods may include a recursively descending algorithm, an iterative array algorithm, and an ordered linked list algorithm. Additionally, to interoperate with network elements which may have a fixed ODTUG structure within an Optical channel Transport Unit (OTU), a method of policy enforcement describing each ODUk layer mapped into ODTUG structures is used to select a best match of the currently provisioned ODUk layers. | 11-22-2012 |
20120294611 | Dynamic Bandwidth Allocation for Congestion Management in PON Channel Aggregation - A method and protocol for dynamic upstream bandwidth allocation to prevent congestion in an aggregation system consisting of multiple PON OLT devices that share a common Service Network Interface (SNI). The method allows OLT devices to communicate real time user traffic load information, and for each OLT to self-throttle upstream throughput based on overall system view of traffic load. The method allows the available SNI bandwidth to be dynamically allocated to OLT ports while maintaining fairness per ONT (user). The method is implemented as a peer-to-peer protocol and does not require central controller resources. The method can be implemented in existing PON systems using software. The method saves the need for expensive dedicated traffic manager devices on the OLT aggregation point. | 11-22-2012 |
20120301140 | Methods for Efficient Transmission in OTN Networks - In accordance with some embodiments of the present disclosure a method for shared mesh protection in an optical transport network comprises provisioning a route for each of a plurality of working demands through the optical transport network. The method further comprises provisioning a route for backup demands corresponding to each of the plurality of working demands. The method additionally comprises packing into a single optical data unit a first backup demand corresponding to a first of the plurality of working demands and a second backup demand corresponding to a second of the plurality of working demands, wherein the first and second of the plurality of working demands share at least one common link in the optical transport network. The method also comprises unpacking the first and second backup demands from the optical data unit. | 11-29-2012 |
20120308231 | Light Path Priority in Dense Wavelength Division Multiplexed Networks - Techniques are provided for using light path priority of service information in an optical network. At a node in the optical network, priority of service information is stored for a plurality of light paths used in the optical network. The node serves traffic in the optical network using the plurality of light paths based on the priority of service information. These techniques provide for prioritizing light paths (wavelengths) for scenarios such as restoration, congestion and resource contention. | 12-06-2012 |
20120308232 | FIBRE CHANNEL FORWARDER FABRIC LOGIN SEQUENCE - System and computer program product embodiments for fibre channel forwarder fabric login sequence in a fibre channel switch environment, where a Fibre Channel Forwarder (cFCF) is separated from a Fibre Channel over Ethernet (FCoE) data forwarder (FDF), are provided. In one embodiment, by way of example only, at a Fibre Channel Login (FLOGI) to a target device from an initiator device, a node address acceptance notification is held from reaching the initiator device until each of the zoning distributions have been considered to have been completed. | 12-06-2012 |
20120315037 | SPLITTING AND MERGING ROUTING DOMAINS - Apparatuses and methods for merging multiple domains into a merged domain and splitting a single domain into multiple domains in an Automatically Switched Optical Network (ASON) are disclosed. For merging, a node in a first domain can be identified to be a new Routing Controller (RC) for the merged domain. A second domain can be identified to be merged with the first domain. Nodes, including old RCs, in the first domain and the second domain are notified of the identity of the new RC in the merged domain. The topology of the old RC's domain is sent to the new RC. The new topology is computed by the new RC from the topology information given by the old RCs. The updated topology is distributed to nodes in the merged domain via the new RC. | 12-13-2012 |
20120321302 | Ethernet Switch - An Ethernet switch which includes an input terminal and an output terminal for coupling the Ethernet switch to a communication network is provided. The switch further includes a power terminal for coupling the Ethernet switch to a power supply, and a control unit being adapted to control the path of signals within the Ethernet switch. In a first operation mode, the control unit is adapted for directing signals received via the input terminal to an internal input terminal of the Ethernet switch, for receiving signals from an internal output terminal and for outputting signals via the output terminal. In a second operation mode, the control unit is adapted for directing signals received via the input terminal to the output terminal. The control unit is adapted to switch from the first operation mode into the second operation mode in response to a predefined trigger event. | 12-20-2012 |
20120321303 | Multiple-Symbol Polarization Switching for Differential-Detection Modulation Formats - An inventive method for multi-symbol polarization switching for differential detection optical systems includes modulating a laser source by a DQPSK modulator, driving the DQPSK modulator with a data block configured for generating multi-symbol polarization-switched DQPSK differential-encoded signals, and polarizing the multi-symbol polarization-switched DQPSK signals with a polarizing modulator whose modulation speed is based on how often polarization states vary, wherein the data block provides a bits manipulation to provide the multi-symbol polarization switching thereby enabling differential detection for recovering correct original data by a receiver. | 12-20-2012 |
20120321304 | COMBINED COMMUNICATION AND BROADCASTING DUAL SWITCHING SYSTEM AND METHOD - Disclosed herein are a combined communication and broadcasting dual switching system and method. The system includes broadcasting transmission means, an Optical Line Terminal (OLT), an optical detection unit, an active path determination unit, an optical switch unit, and a combining unit. The broadcasting transmission means converts a Radio Frequency (RF) broadcast signal into an optical signal. The OLT includes dual lines and selectively outputs an Internet data signal. The optical detection unit detects a line from which the Internet data signal is being output. The active path determination unit determines that the line is an active path. The optical switch unit receives the optical signal from the broadcasting transmission means, and switches to the active path. The combining unit receives the optical signal output after having been switched, receives the Internet data signal from the OLT, and multiplexes the received optical signal and the received Internet data signal. | 12-20-2012 |
20120321305 | RADIO-OVER-FIBER (RoF) SYSTEM FOR PROTOCOL-INDEPENDENT WIRED AND/OR WIRELESS COMMUNICATION - A switched wireless system is used to increase the range of peer-to-peer communications. The optically-switched fiber optic communication system includes a head-end unit (HEU) having a switch bank. Cables couple the HEU to one or more remote access points in different coverage areas. The switch bank in the HEU provides a link between the remote access points in the different coverage areas such that devices in the different cellular coverage areas communicate with each other. By using the switched communication system, the range and coverage of communication between devices may be extended such that devices in different coverage areas and devices using different communication protocols can communicate. | 12-20-2012 |
20120328289 | Devices, Systems and Methods for Run-Time Reassignment of a PHY to MAC Devices Interconnect - Devices, systems and methods for run-time reassignment of the interconnection between devices pertaining to a Physical (PHY) layer and devices pertaining to a Media Access Control (MAC) layer, with no packet loss or with at most one packet lost are provided. The strategies employed by these devices, systems and methods used REMOTE FAULT, PAUSE and IDLE PATTERN messages. The devices may be interconnected via a reconfigurable optical crossbar. | 12-27-2012 |
20130004169 | EFFICIENT METHOD TO EXTRACT A LOWER ORDER (LO) OPTICAL CHANNEL DATA UNIT (ODU)j SIGNAL FROM HIGHER ORDER (HO) OPTICAL CHANNEL TRANSPORT UNIT (OTU)k SIGNAL - A Higher order (HO) Optical channel Data Unit (ODU)k signal is extracted from an HO Optical channel Transport Unit (OTU)k signal using a first clock at or faster than the OTUk clock. An HO Optical channel Payload Unit OPUk signal is extracted from the HO ODUk signal using the first clock. An Optical channel Data Tributary Unit (ODTU) signal is demultiplexed from the HO OPUk signal using the first clock. The ODTU signal is demapped to a lower order (LO) ODUj signal. The LO ODUj data is then smoothed using a smoothing function. Only one clock is used for the multiple stages of extraction of a LO ODUj from a HO OTUk signal. | 01-03-2013 |
20130011136 | Apparatus And Method For Protection In A Data Center - A manner of providing redundancy protection for a data center network that is both reliable and low-cost. In a data center network where the data traffic between numerous access nodes and a network core layer via primary aggregation nodes, an optical network device such as and OLT (optical line terminal) is provided as a backup aggregation node for one or more of the primary aggregation nodes. When a communication path through a primary aggregation node fails, traffic is routed through the optical network device. In a preferred embodiment, a communication link is formed from a plurality of access nodes to a single port of the OLT or other optical network device via an optical splitter that combines upstream transmissions and distributes downstream transmissions. The upstream transmissions from the plurality of access nodes may occur according to an allocation schedule generated when the backup aggregation node is needed. | 01-10-2013 |
20130011137 | METHOD FOR CONTROLLING THE ESTABLISHMENT OF A CONNECTION WITHIN A TRANSPORT NETWORK - A method for controlling the establishment of a connection with a transport network, said message consisting of extracting from a first signaling message a piece of switching status information for a transport switch of said node, configuring said transport switch within said switching status ( | 01-10-2013 |
20130016969 | METHODS AND APPARATUS FOR FIBRE CHANNEL INTERCONNECTION OF PRIVATE LOOP DEVICES - Methods and apparatus for communicating Fibre Channel frames between a private loop device and an Ethernet link through a Fibre Channel private loop device interconnect system. In the preferred embodiments, the Fibre Channel private loop device interconnect system is a fabric or an intelligent bridging hub. In one aspect of this invention, a Fibre Channel private loop device is storage device which contains JBODsd or RAIDs. Preferably, the interconnect system includes a routing filter to filter incoming Arbitrated Loop physical addresses (ALPAs) to determine which Fibre Channel frames must attempt to be routed through the fabric. Numerous topologies of interconnect systems may be achieved. | 01-17-2013 |
20130071116 | VIRTUAL CORE ROUTER AND SWITCH SYSTEMS AND METHODS WITH A HYBRID CONTROL ARCHITECTURE - The present disclosure provides virtual router/switch systems and methods with a domain of optical switches operating as a single, virtualized router using a control plane design combining centralized control of higher layer packet switching functions with distributed control over transport switching functions. The virtual router systems and methods simplify and reduce cost of Internet Protocol (IP) networks by removing the core routers, replacing them with lower cost, high capacity optical switches which are Packet Optical Transport Systems (POTS). The virtual router systems and methods avoids full mesh connectivity of the edge routers and the associated need to maintain routing adjacencies to each of the other edge routers. The virtual router systems and methods include a centralized IP layer management. Further, the virtual router systems and methods include distributed control of the optical layers. | 03-21-2013 |
20130071117 | Encoding & Processing of Signaling Messages for ODU SMP - Methods and nodes are disclosed for the support of traffic protection and recovery in mesh networks having multiple nodes communicating via communication links. The problem of timely and reliable Shared Mesh Protection message delivery is addressed through creation of protocols and encoding of Shared Mesh Protection messages within an overhead of the optical data unit container, and by processing the Shared Mesh Protection messages by intermediate nodes of the mesh network. Thus, the Shared Mesh Protection messages are transmitted through the data plane with the transmission of user data. | 03-21-2013 |
20130077968 | TRANSCEIVERS WITH CONFIGURABLE INTEGRATED CIRCUIT - A transceiver includes a housing, an optical interface for detachably coupling to an optical transmission device, an optical-electrical conversion unit coupled to the optical interface, the optical-electrical conversion unit located in the housing, a programmable logic device communicatively coupled to the optical-electrical conversion unit, and an electrical interface communicatively coupled to the programmable logic device, wherein the electrical interface is configured for detachably coupling to an electrical transmission device. In some embodiments, the programmable logic device may be configured to perform packet filtering, packet slicing, time stamping, packet analysis, port labeling, packet masking, packet modification, packet stripping, packet de-duplication, or a combination thereof. | 03-28-2013 |
20130094855 | METHOD AND SYSTEM FOR MANAGING OPTICAL DISTRIBUTION NETWORK - A method for generating optical paths in a photonic network is provided. A model of a photonic network is used to store relationship information that describes the relationships between photonic network elements, as well as configuration information about the elements of the photonic network. A path manager receives a request to generate one or more paths based on an input port and one or more output ports. Using the information stored in the photonic network model, the path manager generates one or more candidate paths. | 04-18-2013 |
20130108263 | DATA CENTER NETWORK ARCHITECTURE | 05-02-2013 |
20130108264 | HIERARCHY OF CONTROL IN A DATA CENTER NETWORK | 05-02-2013 |
20130121692 | SIGNAL ROUTER - Various signal routing systems are disclosed. Some routing systems include a crosspoint switch or switching fabric for coupling input ports to output ports, allowing an input signal received at one of the input ports to be transported to one or more of the output ports. The systems may include aggregation or compression modules to allow multiple input signals to be combined into one or more compressed signals, which may be converted into optical signals for transmission to a communication network. In some embodiments, the communication network may include a packet switched router which extracts some of the input signals from the optical signals and produced corresponding packetized signals that are coupled to output ports Some routing system may include only a packet switched router. Some routing system may be configured to receive compressed or aggregated signals and to decompress or deaggregate such signals to form individual signal as output signals. | 05-16-2013 |
20130129350 | SERVICE AND APPLICATION LAYER OPTIMIZATION USING VARIABLE RATE OPTICAL TRANSMISSION - Apparatus and methods are provided for application layer optimization in a modern data network. The optimization incorporates variable rate transmission across one or more optical data channels. Data throughput is maximized by enabling quality of service profiles on a per transmission channel basis. According to one aspect, a system is provided in which the application layer is aware of and controls the underlying transmission rate and quality of the transmission. This enables the system to fully utilize the transmission capacity of the channel. The application layer may map different applications to different transmission classes of service. The services can be classified based on data throughput rate, guaranteed error rates, latency and cost, among other criteria. This provides flexibility to the application layer to map some loss tolerant applications to a lower cost (per bit) transmission class. | 05-23-2013 |
20130148963 | Dynamic Multidimensional Optical Networking Based on Spatial and Spectral Processing - An optical network includes a multidimensional coder and modulator for handling multiple-in-multiple-out MIMO spatial lightpath properties and content of any specific supercarrier, a spatial mode multiplexer responsive to orthogonal frequency division multiplexing OFDM transmissions and the multidimensional coder, a spatial-spectral routing node coupled over a fiber link to the spatial mode multiplexer for performing switching granularity by a spatial mode reconnection, a multidimensional decoder and demodulator; and a spatial mode demultiplexer coupled over a fiber link to the spatial-spectral routing node and responsive to the multidimensional decoder and demodulator. | 06-13-2013 |
20130148964 | METHOD FOR SWITCHING AN OPTICAL DATA STREAM, COMPUTER PROGRAM PRODUCT AND CORRESPONDING STORAGE MEANS AND NODE - A method and apparatus for switching an optical data stream via an optical network node, capable of switching optical data received at input ports to output ports. The method includes the following steps performed by a processing chain upon detection of a stream at a given wavelength by a given input port: determining a resource of the node based on a predetermined routing policy such that, for a given wavelength common to source and destination nodes of the stream, routing within the network is carried out according to a routing tree covering the network, a root of the tree being the destination node; consulting an occupancy table for the resource, indicating if at least one possible preceding stream is using the resource; determining a delay to be applied by the processing chain to prevent a collision between the stream and the possible preceding stream; and configuring the processing chain to apply the delay. | 06-13-2013 |
20130156425 | Optical Network for Cluster Computing - Leaf switches and spine switches in a Clos network are interconnected by optical fibers. The network enables large numbers of servers or other apparatus to communicate with each other with minimal delay and minimal power consumption. | 06-20-2013 |
20130156426 | LOW POWER OPTICAL NETWORK TERMINAL AND METHOD OF OPERATING LOW POWER OPTICAL NETWORK TERMINAL - Disclosed is a low power optical network terminal (ONT) and a method of operating the low power ONT. The low power ONT may include a network media access control (MAC) processing unit to transmit and receive traffic to and from an optical line terminal (OLT), a switching unit to receive the traffic transmitted from the network MAC processing unit and transmit the traffic to a subscriber terminal and to receive the traffic from the subscriber terminal and transmit the traffic to the OLT, and a control unit to control traffic transmission from the network MAC processing unit when a power mode is a low power mode. | 06-20-2013 |
20130170832 | SWITCHING DEVICE - A conventional edge device is constituted of a switching device and a transmission device. The switching device determines an ODU as an accommodation destination for an L2 packet from a client side device in accordance with an L2 ID, and outputs the L2 packet to an output port to which the ODU is associated. The transmission device receives an L2 packet through an input port corresponding to an output port of the switching device in a one-to-one manner, and performs transparent mapping on the corresponding ODU so as to output the signal by using an ODU connection. | 07-04-2013 |
20130202294 | G.709 BASED MULTI-STAGES MULTIPLEXING ROUTING CONTROL METHOD AND GATEWAY NETWORK ELEMENT - A G.709 based multi-stage multiplexing routing control method is provided in the present invention, which includes that: the multi-stage multiplexing capability of the gateway network element is carried in a link state advertisement data packet, and the multi-stage multiplexing capability of the gateway network element is advertised to a routing domain in which the gateway network element is located or a path computation entity through a routing protocol. A gateway network element is also provided in the present invention, the gateway network element is configured to: carry the multi-stage multiplexing capability of the gateway network element in the link state advertisement data packet, and advertise the multi-stage multiplexing capability of the gateway network element to the routing domain in which the gateway network element is located or the path computation entity through the routing protocol. With the above G.709 based multi-stage multiplexing routing control method and gateway network element, advertising the multi-stage multiplexing capability of the gateway network element to other network elements is implemented, thereby solving the problem of interconnection between new devices and old devices. | 08-08-2013 |
20130202295 | BI-DIRECTIONAL, COMPACT, MULTI-PATH AND FREE SPACE CHANNEL REPLICATOR - An apparatus for simulating radio frequency (RF) signal propagation characteristics in a wireless communication network is disclosed. The apparatus includes a first RF terminal and a second RF terminal. A first optical modulator is in electrical communication with the first RF terminal. An optical delay line is in optical communication with the first optical modulator. A first optical demodulator is in optical communication with the optical delay line and in electrical communication with the first RF terminal. A second optical demodulator is in optical communication with the optical delay line and in electrical communication with the second RF terminal. A second optical modulator is in electrical communication with the second RF terminal and in optical communication with the optical delay line. | 08-08-2013 |
20130202296 | OPTICAL NODE CONFIGURATION APPARATUS - A segmented optical node exploits a configuration module having arrayed all elements to go from a 1×4 to a 4×4 configuration, save optional redundant switches. A jumper board in the 1×, 2× path configures the node for 1×4 in one orientation and for 2×4 when flipped around 180 degrees. The 4×4 configuration is achieved by rotating the configuration module 90 degrees. In this orientation power to the module is also off, since the 4× configuration is passive. | 08-08-2013 |
20130209099 | FIBER DROP TERMINAL - A drop terminal mounting system includes a fiber drop terminal having a housing and a base attached to the housing. The housing includes an outer surface containing a plurality of receptacles and cooperatively defines an inner cavity with the base. The drop terminal mounting system further includes a bracket having a first fastening region and a second fastening region adapted to secure the drop terminal to the bracket. | 08-15-2013 |
20130216222 | Signaling Control Method and System for Service Establishment Based on G.709 - A signaling control method for service establishment based on G.709 is provided in the present invention, including: a control plane obtaining routing information of an end-to-end service to be established, information of a gateway network element passed by end-to-end service routing and a multi stage multiplexing capability selected for the gateway network element, initiating an end-to-end connection establishment process, and sending an end-to-end connection establishment signaling to nodes passed by the end-to-end service routing, wherein, the end-to-end connection establishment signaling contains the multi stage multiplexing capability selected for the gateway network element passed by the end-to-end service routing, and a corresponding multi stage multiplexing capability is configured on the gateway network element. A signaling control system for service establishment based on G.709 is also provided in the present invention. In the method and system, the interconnection between old devices and new devices is better implemented. | 08-22-2013 |
20130230320 | FLEXIBLE OPTICAL MODULATOR FOR ADVANCED MODULATION FORMATS FEATURING ASYMMETRIC POWER SPLITTING - An apparatus comprising a first optical input coupler, having first and second input ports and first and second output ports. The optical input coupler can be configured to receive an optical input signal to the first input port. An optical power level ratio of a second optical output to first optical output transmitted from the second and the first output ports, respectively, equals about 2:1. | 09-05-2013 |
20130236173 | SCALABLE OPTICAL-CORE NETWORK - A network comprising a large number of electronic edge nodes interconnected through bufferless optical switch planes so that a signal from any edge node to any other edge node traverses only one switch plane scales to a capacity of hundreds of petabits per second while providing global geographic coverage. Each edge node is time-locked to each optical switch plane to which it connects to enable loss-free time-sharing of the network core despite the absence of buffers in the core. In an alternate implementation, a relatively small number of electronic switch units may be employed in a predominantly-optical core. In addition to scalability and high performance, the simple structure of the network significantly simplifies addressing and routing. | 09-12-2013 |
20130243427 | LOSSLESS BANDWIDTH ADJUSTMENT METHOD, DEVICE AND SYSTEM - A lossless bandwidth adjustment method is provided, includes: A downstream node of an ODUflex path receives a request message from an upstream node of the ODUflex path, where the request message is used for requesting lossless adjustment of a bandwidth of the ODUflex path; the downstream node searches according to the tunnel identifier to obtain bandwidth information before adjustment of the ODUflex path, compares the bandwidth information before adjustment with the bandwidth information after adjustment, determines the number of tributary slots that need to be adjusted for a link between the downstream node and an adjacent upstream node, and selects a tributary slot that needs to be adjusted; indicates, through a label, a tributary slot after adjustment of the adjacent upstream node or the selected tributary slot that needs to be adjusted, and sends a tributary slot adjustment command to a data plane. | 09-19-2013 |
20130243428 | COMMUNICATION SYSTEM AND METHOD THEREFOR - A frame transmitting apparatus includes a transmitting unit which transmits, when a change is made to a value in a predetermined field of a frame, the frame including the predetermined field with the changed value a predetermined number of times in succession. A frame receiving apparatus includes a receiving unit which receives the frame and an acceptance processing unit which recognizes the value in the predetermined field of the received frame and conducts acceptance processing. The acceptance processing unit compares, when the value is different from a currently accepted value, the value with an expected value; accepts the value when the value matches the expected value; and accepts, when the value does not match the expected value, the value after receiving the same value the predetermined number of times in succession. | 09-19-2013 |
20130251366 | ESTABLISHING CONNECTION ACROSS A CONNECTION-ORIENTED FIRST TELECOMMUNICATIONS NETWORK IN RESPONSE TO A CONNECTION REQUEST FROM A SECOND TELECOMMUNICATIONS NETWORK - A first Multi Protocol Label Switching (MPLS) Internet Protocol (IP) data network transmits data to a second MPLS IP network via a legacy network, which would not otherwise be able to handle the required user network interface (UNI) protocol by configuring the legacy network and its connection computing apparatus (CCA) so that they emulate an MPLS network. When a firt network element (NE) receives a connection (UNI) request from the MPLS network under a UNI protocol, the UNI request is passed to the CCA, which then sets the required connection across the legacy network via a second network element (NE) to an NE of the second network. Once the connection has been set, the CCA instructs the NE to send a return signal to the requesting network indicating that the connection has been successfully set. Data packets may then be transmitted across the network. | 09-26-2013 |
20130259472 | METHOD AND NETWORK NODE FOR CONFIGURING A NETWORK FOR OPTIMIZED TRANSPORT OF PACKET TRAFFIC - In order to configure a network for optimized transport of packet data traffic, a first packet node determines whether a traffic volume to be forwarded to a remote second packet node exceeds a predefined bypass threshold. If that is the case, the first packet node sends a bypass request towards the remote second packet node. An intermediate third packet node processes the request and determines, whether it locally has an interfering second bypass request and in this case, determines which of the two requests has a higher weight. The bypass request or, in case of an interfering second bypass request, the one with the higher weight, is then forwarded to the remote second packet node. Upon receipt thereof, the second packet node determines whether the received bypass request can be served. It that is the case, the bypass will be executed by sending a trigger to a service layer network to establish a bypass connection in accordance with the bypass request. | 10-03-2013 |
20130272699 | RANGING METHOD, SYSTEM, AND APPARATUS FOR PASSIVE OPTICAL NETWORK - Embodiments of the present disclosure provide a ranging method for a passive optical network, including: allocating ranging bandwidth to at least two optical network terminals ONTs and providing ranging bandwidth information for the at least two ONTs by using a same downlink frame; opening a quiet window for suspending uplink sending of other ONTs in a ranging process of the at least two ONTs; and receiving ranging responses of the at least two ONTs in the quiet window and calculating ranging results of the at least two ONTs according to the ranging responses of the at least two ONTs. The embodiments of the present disclosure further provide a ranging apparatus for a passive optical network and a passive optical network system. | 10-17-2013 |
20130272700 | OPTICAL SIGNAL CONTROL DEVICE AND OPTICAL SIGNAL CONTROL METHOD - An optical signal control device includes an optical signal control unit and a drive circuit. The optical signal control unit includes m number of optical waveguides for propagating carrier light and (m×n) number of interaction regions, n number of interaction regions formed on each of the optical waveguides. The drive circuit includes (m×n) number of phase control units. The (m×n) number of phase control unit output a data signal for controlling the action of the (m×n) number of interaction regions to each of the (m×n) number of interaction regions. Each of the (m×n) number of phase control units outputs the data signal so that timing when the carrier light propagates to the interaction region to output the data signal and timing when the data signal arrives at the interaction region are synchronized. One of m and n is two or more. | 10-17-2013 |
20130272701 | OPTICAL ACCESS SYSTEM - An optical access system is provided that enables subscriber terminals or termination devices to be interconnected via dedicated lines as needed, with respect to subscriber terminals or termination devices participating in an optical network. | 10-17-2013 |
20130279907 | Data Transmission System Used Between Multiple Servers, Data Interface Device, and Data Transmission Method - A data transmission system used between multiple servers, a data interface device, and a data transmission method, which belong to the field of network communications, are disclosed. The data transmission system includes: a data interface device configured to receive a data stream from a server, and generate a forwarding request according to the data stream, where the forwarding request includes a destination address of the data stream; a controller device configured to generate a forwarding configuration signal according to the forwarding request; and an all-optical switching matrix configured to set an optical switching path between two data interface devices according to the forwarding configuration signal, so as to forward the data stream to a server specified by the destination address, where the two data interface devices are data interface devices connected to the source server of the data stream and the server specified by the destination address. | 10-24-2013 |
20130294771 | MULTI-NODE SYSTEM NETWORKS WITH OPTICAL SWITCHES - A system and method for optical switching of networks in a multi-node computing system with programmable magneto-optical switches that enable optical signal routing on optical pathways. The system includes a network of optical links interconnecting nodes with switching elements that are controlled by electrical control signals. Data transmission is along the optical links and an optical pathway is determined by the electrical control signals which are launched ahead of optical signal. If links are available, an optical pathway is reserved, and the electrical signal sets the necessary optical switches for the particular optical pathway. There is thereby eliminated the need for optical-electrical-optical conversion at each node in order to route data packets through the network. If a link or optical pathway is not available the system tries to find an alternative path. If no alternative path is available, the system reserves buffering. After transmission, all reservations are released. | 11-07-2013 |
20130294772 | MULTI-NODE SYSTEM NETWORKS WITH OPTICAL SWITCHES - A system and method for optical switching of networks in a multi-node computing system with programmable magneto-optical switches that enable optical signal routing on optical pathways. The system includes a network of optical links interconnecting nodes with switching elements that are controlled by electrical control signals. Data transmission is along the optical links and an optical pathway is determined by the electrical control signals which are launched ahead of optical signal. If links are available, an optical pathway is reserved, and the electrical signal sets the necessary optical switches for the particular optical pathway. There is thereby eliminated the need for optical-electrical-optical conversion at each node in order to route data packets through the network. If a link or optical pathway is not available the system tries to find an alternative path. If no alternative path is available, the system reserves buffering. After transmission, all reservations are released. | 11-07-2013 |
20130294773 | G.709 Based Multi-Level Multiplexing Routing Control Method and Gateway Network Element - A G.709 based multi-stage multiplexing routing control method and a gateway network element. The method comprises: a gateway network element broadcasting multi-stage multiplexing capability of the gateway network element to a routing domain where the gateway network element is located or a path calculation entity through an extended routing protocol, so as to implement multi-stage multiplexing configuration and management of an optical transport network through the gateway network element; the multi-stage multiplexing capability comprises information of multiplexing hierarchy supported by a port of a link connected to the gateway network element and adaptation ability. | 11-07-2013 |
20130308941 | Energy Efficient Ethernet Network Capability and Feature Exchange in Optical Network Links - In interfaces such as optical physical layer devices that do not support auto-negotiation, configuration of an energy efficiency Ethernet operation can be enabled through higher-layer protocol messaging that advertises energy efficiency capabilities and features between link partners. The higher-layer protocol messaging occurs after optical communication is established. | 11-21-2013 |
20130308942 | OPTICAL MEMORY SYSTEM INCLUDING AN OPTICALLY CONNECTED MEMORY MODULE AND COMPUTING SYSTEM INCLUDING THE SAME - An optical memory system according to example embodiments includes a plurality of memory modules, each memory module including a plurality of memory devices; a light source; a light distribution unit connected to the light source through a first optical transmission line; a plurality of second optical transmission lines connected between the light distribution unit and the plurality of memory modules; a plurality of electrical to optical converters, each connected to at least one of the second optical transmission lines; and a plurality of output optical transmission lines connected to the plurality of electrical to optical converters, each output optical transmission line for outputting an electrical to optical converted signal. | 11-21-2013 |
20130308943 | OPTICAL TRANSPORT NETWORK CLOCK TRANSIENT SUPPRESSION SYSTEMS AND METHODS - An Optical Transport Network (OTN) method, an OTN switching node method, and an OTN node utilize a “double wrapper” configuration to eliminate clock transients in OTN networks. That is, the systems and methods bury an ODU beneath another overclocked ODU thereby eliminating any interruptions due to clock transients, framing events or other disruptions. For example, an ODU2 can be mapped into an ODU2e, an ODU3 can be mapped into an ODU3e2, an ODU4 can be mapped into an ODUG or some other overclocked variant of ODU4, and the like. Specifically, ODU2e, ODU3e2, ODUG, etc. are overclocked variants of ODU2, ODU3, ODU4, etc. The systems and methods propose to use these overclocked signals to carry standard ODU signals to eliminate clock transient problems. | 11-21-2013 |
20130315586 | TERABIT TOP-OF-RACK SWITCH - One embodiment of the present invention provides a switch. The switch includes a printed circuit board (PCB), a number of multi-channel optical transceivers mounted on the PCB, and a number of switch ports accessible from a front panel of the switch. The switch ports include a number of electrical interfaces that are electrically coupled to a switch chip mounted on the PCB, and a number of optical interfaces that are coupled to the switch chip via the multi-channel optical transceivers. | 11-28-2013 |
20130315587 | COMMUNICATION SYSTEM, COMMUNICATION-LINE SWITCHING METHOD, AND MASTER STATION DEVICE - A communication system in which a combination of redundant configurations of communication lines and a power-saving-mode operating function is incorporated, and includes a power-saving-device identification unit that identifies a slave station device in a power saving mode, and a line switching unit that switches a communication line forming a communication route from the currently used communication line to the backup communication line when a state where a master station device does not receive a signal from any of a plurality of slave station devices except for the slave station device identified by the power-saving-device identification unit as being in the power saving mode among the slave station devices continues for a predetermined time. | 11-28-2013 |
20130315588 | APPLIANCE AND ARRANGEMENT FOR OPTICAL SIGNAL TRANSMISSION BY MEANS OF OPTICAL WAVE-GUIDES - An appliance for optical signal transmission using optical waveguides in explosion-hazard areas, in particular in underground mining, includes an optical transmitter, having an optical output interface for connection of an optical waveguide transmission path and having a device for limiting the light power. An arrangement for bi-directional optical signal transmission is also provided. In order to provide an appliance for optical signal transmission as well as an arrangement for bi-directional optical signal transmission in explosion-hazard areas, complying with the requirements for intrinsically safe operation of the transmission medium when separating or decoupling the transmission medium, the device for limiting the light power is a passive optical component which is connected in the optical signal path between the optical transmitter and the optical output interface. | 11-28-2013 |
20130322879 | MATRIX ROUTER AND METHOD OF SWITCHING - A matrix router and method of switching comprising a combined input stage and output stage (I/O stage) having m matrix switch(es), each matrix switch having n inputs and n outputs, each input of said n inputs switchable within said matrix switch to any output of said n outputs, k core outputs and k core inputs, each input of said n inputs switchable to any core output of said k core outputs and each core input of said k core inputs switchable to any output of said n outputs; and a core stage having a matrix switch at least with m times k core stage inputs and at least m times k core stage outputs, each core stage input connected to one core output of said I/O stage, and each core stage output connected to one core input of said I/O stage, where m, n and k are integers and m≧1, n≧2, k≧n. | 12-05-2013 |
20130330075 | TRANSMISSION APPARATUS AND TRANSMISSION METHOD - A transmission apparatus includes a network-side interface unit configured to receive a signal transmission frame into which a client signal is arranged from each of a working line and a protection line of a network, and extract the client signal from the received signal transmission frame, a client-side interface unit configured to transmit the extracted client signal to a client transmission path by using a generated clock, based on frequency adjustment information of the client signal included in the signal transmission frame, a protection-line-side memory configured to store the frequency adjustment information of the client signal included in the signal transmission frame received from the protection line, and a switch controller configured to control to generate a clock by using the frequency adjustment information of the client signal stored in the protection-line-side memory when the signal transmission frame fails to be received from the working line. | 12-12-2013 |
20130343755 | Software-Defined Optical Network - A software-defined (SD) optical network is disclosed. An SD optical line terminal (OLT) includes a global SD controller, one or more SD OLT drivers connected to the global SD controller, and an underlying hardware component connected to each of said one or more SD OLT drivers. An SD optical network unit (ONU) includes a local SD controller, one or more SD optical network unit (ONU) drivers connected to the local SD controller, and an underlying hardware component connected to each of said one or more SD ONU drivers, wherein the local SD controller manages said one or more SD ONU drivers by issuing commands communicated to said one or more SD ONU drivers, and wherein each of said one or more SD ONU drivers implements a required function on the underlying hardware component. Other apparatuses, systems, and methods also are disclosed. | 12-26-2013 |
20130343756 | METHOD FOR DYNAMIC PACKET-OPTICAL SERVER NETWORK - A method for reconfiguration of a Label Switched Path(s) (LSP) of a first client of a packet-optical transport network, the packet-optical transport network including a first LSR-user-plane unit, a second LSR user plane unit, and a common control unit, the method comprising: transporting the LSP of the first client directly over a common link to a first network element, the first network element comprising the common control unit, connecting the common link by means of a bypass unit to the first LSR-user-plane unit, wherein the first client exchanges LSP specific control messages with the control unit, and the first client continues to exchange LSP specific control messages with the control unit after the common link with the LSP has been switched over from the first LSR-user-plane unit to the second LSR user plane unit. | 12-26-2013 |
20130343757 | Optical Path Switching - A light source package is disclosed for a Raman amplifier node having a primary optical fibre for carrying an optical signal and a secondary optical fibre for carrying the optical signal when the signal is rerouted from the primary optical fibre. The light source package includes a primary light source for emitting light into the primary optical fibre when the optical signal is carried by the primary optical fibre to induce Raman gain of the optical signal, and a secondary light source for emitting light into the secondary optical fibre when the optical signal is carried by the secondary optical fibre to induce Raman gain of the optical signal. | 12-26-2013 |
20140050475 | Coherent Quantum Information Transfer Between Topological and Conventional Qubits - Computing bus devices that enable quantum information to be coherently transferred between topological and conventional qubits are disclosed. A concrete realization of such a topological quantum bus acting between a topological qubit in a Majorana wire network and a conventional semiconductor double quantum dot qubit is described. The disclosed device measures the joint (fermion) parity of the two different qubits by using the Aharonov-Casher effect in conjunction with an ancillary superconducting flux qubit that facilitates the measurement. Such a parity measurement, together with the ability to apply Hadamard gates to the two qubits, allows for the production of states in which the topological and conventional qubits are maximally entangled, and for teleporting quantum states between the topological and conventional quantum systems. | 02-20-2014 |
20140064726 | SYSTEM FOR SIGNALS INDOOR DISTRIBUTION ON OPTICAL FIBER - A system for simultaneous indoor distribution of baseband digital signals (e.g Ethernet signals) and radiofrequency signals, the system comprising an Hybrid Optical Node and at least an Hybrid Switch/Hub node. The present invention solves the aforementioned problems proposing a system which simultaneously distributes the baseband digital data and the analog radiofrequency signals provided by a radio access node in an indoor environment by means of a Plastic Optical Fiber (POF) network. The main advantage of this invention is that it makes it possible to share a Plastic Optical Fiber infrastructure between a Local Area Network for data digital transmission, and the distribution of wireless radiofrequency signals, in particular DVB broadcast signals and Mobile Broadband signals like UMTS or LTE. | 03-06-2014 |
20140072299 | HYBRID DATA TRANSPORT FOR A VIRTUALIZED DISTRIBUTED ANTENNA SYSTEM - A system for data transport in a Distributed Antenna System (DAS) includes a plurality of remote Digital Access Units (DAUs) located at a Remote location. The plurality of remote DAUs are coupled to each other and operable to transport digital signals between the plurality of remote DAUs. The system also includes a plurality of central hubs. Each of the plurality of central hubs is in communication with one of the remote DAUs using an electrical communications path. The system further includes a plurality of transmit/receive cells. Each of the plurality of transmit/receive cells includes a plurality of remote hubs. Each of the remote hubs in one of the plurality of transmit/receive cells is in communication with one of the plurality of central hubs using an optical communications path. | 03-13-2014 |
20140072300 | NETWORK DEVICE OF OPTICAL NETWORK TERMINAL AND METHOD OF ADJUSTING POWER OF OPTICAL SIGNALS - A network device of an optical network terminal (ONT) includes an optical communication interface, an input interface, a memory and a processor. Wherein the optical communication interface transmits optical signals with adjusted transmission power; the input interface is used to input a distance; the memory stores a plurality of distances, and a plurality of databases respectively correspond to the distances; the processor electrically connects to the optical communication interface, input interface and the memory, and is used to access the database in the memory corresponding to the inputted distance, and then adjust the transmission power of the optical communication interface according to the content in the database. In addition, a method of adjusting the power of optical signals is further provided in this invention. | 03-13-2014 |
20140086580 | OPTICAL LINE TERMINAL (OLT) SYSTEM - An optical line terminal (OLT) system for a passive optical network (PON) may include a processor, an OLT Medium Access Control (MAC) device communicatively coupled to PON ports, and a switch device communicatively coupled to the OLT MAC device via an Ethernet interface. The processor may map logical identifiers of each PON port to tunnel identifiers, where each tunnel identifier is indicative of a logical identifier and its corresponding PON port. The OLT MAC device may receive upstream data items that include logical identifiers over the PON ports. The OLT MAC device may replace the logical identifier of each upstream data item with the tunnel identifier that is mapped to the logical identifier and the PON port over which the upstream data item was received. The OLT MAC device may transmit, over the Ethernet interface to the switch device, the upstream data items including the tunnel identifiers. | 03-27-2014 |
20140086581 | METHOD FOR RESIZING NETWORK CONNECTION IN THE OPTICAL TRANSPORT NETWORK SUPPORTING PROTECTION SWITCHING - There is provided a method for resizing a network connection in an optical transport network that supports protection switching and receives a flexible Optical channel Data Unit (ODUflex(GFP)) signal. In addition, at nodes located on a protection path for protection switching, only a Link Connection Resize (LCR) protocol, except for a Bandwidth Resize (BWR) protocol, of Hitless Adjustment of ODUflex(GFP) (HAO) procedure is executed. On the other hand, both the LCR protocol and the BWR protocol are executed at nodes located on a working path for protection switching. | 03-27-2014 |
20140093239 | OLT MAC MODULE FOR EFFICIENTLY PROCESSING OAM FRAMES - Embodiments of the present disclosure provide efficient solutions for detecting and transmitting heartbeat frames at an optical line terminal (OLT) of an Ethernet passive optical network (EPON). The processing burden of a host CPU is reduced by shifting some of the processing responsibilities of the host CPU to an embedded CPU. An OAM capture FIFO buffer stores frames for later processing by the embedded CPU, and fields of an OAM vector register are changed whenever a heartbeat frame is detected for an LLID. Embedded CPU polls the OAM vector at a predetermined rate sufficient to maintain link status, so heartbeat messages are not missed even when the OAM capture FIFO buffer overflows. Additionally, an OAM generation buffer efficiently creates new heartbeat messages to be sent to ONUs for each supported LLID by modifying previously transmitted OAM frames with new information specific to the LLIDs. | 04-03-2014 |
20140105599 | Method, Network Device and User Equipment for Switching Media Access Control Address - The present invention provides a method, a network device, and a user equipment for switching a MAC address. The network device provides a first port and a second port, each port being connected to at least one user equipment. After switching from the first port to the second port, the network device sends a first packet to the user equipment. The first packet carries a second MAC address, so that the user equipment switches a first MAC address to the second MAC address according to the first packet; receiving a second packet returned by the user equipment. After determining, according to the second packet, that the user equipment switches to the second MAC address, the locally used first MAC address is switched to the second MAC address. | 04-17-2014 |
20140119727 | INTERNET PROTOCOL SWITCHING SYSTEM AND ASSOCIATED METHOD OF USE - An IP switching system that includes a coder/decoder configured for converting voice between analog and digital; and a first switch coupled to the coder/decoder configured to isolate non-secure entities in a network and comprising a plurality of fiber optic ports; wherein two of the plurality of fiber optic ports are configured to pass classified and unclassified data to one of a classified IP network and an unclassified IP network; and wherein the first switch is configured to operate in a plurality of states including secure, non-secure, and configuration/cut-off. The IP switching system also includes at least one controller connected to the coder/decoder via the first switch such that the at least one controller is accessible to the coder/decoder only when the first switch is in the configuration/cut-off state; wherein the at least one controller is configured to store and retrieve sensitive coder/decoder parameters for operation of the coder/decoder. | 05-01-2014 |
20140133851 | SWITCHING CLOS NETWORK UNIVERSAL ELEMENT - A switching Clos network universal element that can dynamically change its role is disclosed. The universal element contains a matrix of VCSELs and a matrix of photodiodes on top of an electro-optical chip. The matrix of VCSELs sends data via a first set of optical links, and the matrix of photodiodes receives data a second set of optical links. The universal element also receives and sends data through electronic links. The universal element can function as an expander, aggregator or transitive switch in a folded Clos network. As an expander or an aggregator, the universal element uses its optical links as ingress links and its electronic links as egress links. Using this universal element, a network can be constructed without separate switching elements. Multiple universal elements can be positioned on a PCB, and the multiple universal elements can function as one switch. | 05-15-2014 |
20140133852 | PASSIVE CONNECTIVITY OPTICAL MODULE - A passive connectivity optical module (“PassCOM”) is disclosed. A PassCOM is a passive device without a switching functionality. A PassCOM connects links between a plurality of nodes using replaceable plugs. The device can be used for an internal inter-node switching system, where each node is capable of sending data to a destination using a specific link. A source node sends data through a particular link that is connected to a link from a destination node in the PassCOM. Data is first sent from a source node through a link connecting the source node and the PassCOM, then the data is transmitted, through a plug, to the destination node using a link connecting the PassCOM and the destination. | 05-15-2014 |
20140133853 | PASSIVE OPTICAL NETWORK SWITCH - A Passive Optical Network (PON) Switch which breaks down and regenerates a point to multipoint optical communication signals that are compliant with a PON protocol between an Optical Line Terminal (OLT) and an Optical Network Unit (ONU) by performing a conversion between optical communication signals compliant with PON protocol and data units compliant with Ethernet protocol. | 05-15-2014 |
20140133854 | VERSATILE OPTICAL NETWORK INTERFACE METHODS AND SYSTEMS - Methods and systems for implementing versatile optical terminals that detect optical transmission protocols and subsequently adapt to the correct protocol are disclosed. In an embodiment, an interface device for providing an interface for a first network with a passive optical network (PON) is disclosed. The interface device includes a protocol detection circuit for determining whether optical communication signals received from the PON conform to a first optical communication protocol, and a switchover control circuit that reconfigures the interface device to work with a second optical communication protocol when the received optical communication signals do not conform to the first optical communication protocol. | 05-15-2014 |
20140169789 | OPTICAL COMMUNICATION INTERFACE UTILIZING CODED PULSE AMPLITUDE MODULATION - The present invention is directed to communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using PAM format(s) over optical communication networks. In certain embodiments, the communication interface is used by various devices within a spine-leaf network architecture, which allows large amount of data to be shared among servers. | 06-19-2014 |
20140169790 | MAGNETO-OPTICAL LOGIC DEVICES AND COMPUTATION - Disclosed is a method and apparatus for optical computing using magneto-optical elements as logic devices. Essential logic and computing elements have been implemented. | 06-19-2014 |
20140178066 | QoS-aware united control protocol for optical burst switching in software defined optical netoworks - The present invention is directed to a QoS-aware unified protocol that is applicable in the control plane of software defined networks, which can bring following benefits and includes optical burst switching protocol mainly requires four key operations; burst assembling, burst routing, burst scheduling, and control packet signaling protocols. | 06-26-2014 |
20140178067 | DATA COMMUNICATION METHOD IN OPTICAL NETWORK SYSTEM, OPTICAL NETWORK UNIT AND SYSTEM - The present invention provides a data communication method, where the method includes: receiving, through a first port of a first optical network unit, a first message sent by a first optical line terminal, where the first message is used to instruct the first optical network unit to switch to the second port from the first port; and after the first optical network unit switches to the second port from the first port according to the first message, performing data communication with a second optical line terminal through the second port. It is ensured that switchover time between the OLTs is within 50 ms, and reliability of data communication is further improved. | 06-26-2014 |
20140186034 | Network Interface and Method of Aggregating Processor Circuits - A system having a first and second interfaces is described. At least one of the first and second interfaces has a cell engine, a first processor circuit, a second processor circuit, and a first and second transponder. The first processor circuit is coupled with the first transponder and the cell engine so as to transmit a header cell to the cell engine. The second processor circuit is coupled with the second transponder and the cell engine so as to transmit a body cell to the cell engine. The system may aggregate the processing capacity of several processor circuits to form larger capacity logical interfaces. Packets may be fragmented into a header cell including the packet header and body cells including the packet payload and then transmit and reassemble the packet. The header cells may be fully handled by the processor circuit, while body cells may be passed on without processing. | 07-03-2014 |
20140186035 | OPTICAL NETWORK UNIT HAVING POWER SAVING FUNCTION AND POWER SAVING METHOD THEREOF - An optical network unit (ONU) having a power saving function for reducing power consumption in an optical network and a power saving method thereof are provided. The ONU includes a first signal transmitter-receiver unit configured to transmit and receive a signal to and from an optical line terminal, a second signal transmitter-receiver unit configured to transmit and receive a signal to and from customer premises equipment through multiple communication ports, a signal processing unit configured to control a signal to be transmitted and received through the first signal transmitter-receiver unit and the second signal transmitter-receiver unit, and a processor configured to control powers of the first signal transmitter-receiver unit and the signal processing unit according to whether data traffic is received through the plurality of communication ports. | 07-03-2014 |
20140205284 | System and Method for Precise, Accurate and Stable Optical Timing Information Definition Including Internally Self-consistent Substantially Jitter Free Timing Reference - An optoelectronic timing system includes an optical timing compensation system in which optical pulses from a semiconductor laser are advanced or retarded based upon an expected arrival time. The pulses are directed into a number of time-quantifiable optical paths. Optical switches may direct a pulse into an advancing path or a retarding path based on an arrival time of a previous pulse. The optical compensation system may be incorporated into a precision timing device in which multiple optical paths are arranged so that a travel time of a path is one order of magnitude different than a travel time of an adjacent path. Timing signals can be developed by coupling an optical detector to each of the multiple optical paths. | 07-24-2014 |
20140205285 | Fiber Bypass Module and its Adapted In-Line Equipment - A fiber bypass module and its adapted in-line equipment are provided. The fiber bypass module has an optical switch, a plurality of connectors, and a circuit substrate with an electrical signal control connector exposed. The electrical signal control connector may be plugged to the socket of the in-line equipment to receive the electrical control signal sent from the in-line equipment. The optical switch is provided on the circuit substrate and the electrical signal control connector is electrically connected with the optical switch such that the received electrical control signal is transmitted to the optical switch to execute the switching mode of the optical switch. Each of the plurality of connectors may be extended remotely to connect optical transceivers and optical network equipments, so that the optical transceivers and the fiber network equipments do not have to be provided at the same place as the in-line equipment. | 07-24-2014 |
20140205286 | Multi-Direction Variable Optical Transceiver - An optical transceiver including a multi-direction variable transmitter including multiple outputs with different subcarriers being directed to different ones of the outputs to go to different directions in a network, and a multi-direction variable receiver for receiving multiple inputs thereby enabling transmission direction in a network with the transceiver at subcarrier granularity and avoiding entire super-channel granularity and enabling unused subcarriers to be utilized for traffic in other directions or destinations and making switching granularity finer for flexibility in the network. | 07-24-2014 |
20140205287 | OPTICAL SWITCH AND PROTOCOLS FOR USE THEREWITH - A method of establishing a data connection between terminal switching nodes in a network and switching nodes for implementing the method. The method involves switching nodes participating in a network layer wavelength routing (WR) protocol to determine the next hop switching node for every possible combination of terminal nodes based on the network topology. The method also involves the switching nodes participating in a network layer wavelength distribution (ND) once the data connection is to be established. The WR protocol determines the path used through the network, while the WD protocol assigns wavelengths on each link between switching nodes. The wavelengths may be different on different optical links. The switching nodes include wavelength converters with an optical switch or optoelectronic converters with a digital electronic switch. A digital electronic switch can also provide signal reformatting. Advantages of using potentially different wavelengths along various segments of a single end-to-end connection yields increased wavelength efficiency. | 07-24-2014 |
20140219654 | OPTICAL NETWORK SYSTEM - A normal system OSU, a redundancy system OSU, an optical switch, a concentration switch, and a controller which detects a command input by operation control and performs control according to the command are provided, and in such a state that the controller detects a redundancy system switching command indicating that the normal system OSU is switched to the redundancy system OSU, the controller induces the concentration switch to change a storage destination of a down signal, instructs the normal system OSU which is the switching source OSU to stop transmission of a transmission permission message, instructs the optical switch to switch a path after receiving remaining data processing completion notifications from the concentration switch and the normal system OSU which is the switching source OSU, writes accumulated information about the normal system OSU, which is the switching source OSU, in the redundancy system OSU, and notifies the concentration switch of completion of switching, whereby a down signal is transmitted from the concentration switch. | 08-07-2014 |
20140219655 | TRANSPORT OF MULTIPLE ASYNCHRONOUS DATA STREAMS USING HIGHER ORDER MODULATION - Aspects of the invention provide transmitters and receivers for managing multiple optical signals. High order modulation, such as phase and/or amplitude modulation, is used to achieve multiple bits per symbol by transporting multiple asynchronous data streams in an optical transport system. One or more supplemental multiplexing techniques such as time division multiplexing, polarization multiplexing and sub-carrier multiplexing may be used in conjunction with the high order modulation processing. This may be done in various combinations to realize a highly spectrally efficient multi-data stream transport mechanism. The system receives a number of asynchronous signals which are unframed and synchronized, and then reframed and tagged prior to the high order modulation. Differential encoding may also be performed. Upon reception of the multiplexed optical signal, the receiver circuitry may employ either direct detection without a local oscillator or coherent detection with a local oscillator. | 08-07-2014 |
20140233946 | Replacing an Existing Network Communications Path with a New Path Using Some Exclusive Physical Resources of the Existing Path - In one embodiment, a replacement network communications path is determined using dedicated resources of an existing path. One or more network elements in a network determines a new communications path between a first network node and a second network node in the network while an existing communications path is currently configured in the network to carry traffic between the first and second network nodes. The existing communications path includes one or more exclusive physical resources dedicated to the existing communications path. The new communications path includes at least one of said exclusive physical resources dedicated to the existing communications path. One embodiment includes: subsequent to said determining the new communications path, removing the existing communications path from service, and then instantiating the new communications path, with the new communications path including said at least one of said exclusive physical resources. | 08-21-2014 |
20140233947 | INTEGRATED ASSEMBLY FOR SWITCHING OPTICAL SIGNALS - An integrated assembly for switching optical signals. The integrated assembly includes two subassemblies. For instance, the subassemblies might be a shelf assembly and the integrated assembly might be a rack assembly in which the shelf assemblies are connected. Each of the subassemblies includes optical interfaces configured to support communication of optical channels to and from the integrated assembly using the corresponding subassembly. Each subassembly might also include multiple switch fabric assemblies each including a switching mechanism. An inter-subassembly communication interface is provided between each subassembly. An optical signal may be switched from one of the subassemblies (e.g., one of the shelves) to another even though there is no intervening switching circuitry in between the different subassemblies. Instead, the switching operation is distributed between the subassemblies. | 08-21-2014 |
20140270760 | Twin Multicast Switch - Methods, systems, and apparatus, including computer programs encoded on computer storage media, for optical switching. An optical switch device includes a first multicast switch unit; and a second multicast switch unit, wherein each of the first and second multicast switch units respectively include: multiple optical input ports; multiple optical switches; multiple optical splitters/combiners; and multiple optical output ports. | 09-18-2014 |
20140270761 | Method and Apparatus for Efficient and Transparent Network Management and Application Coordination for Software Defined Optical Switched Data Center Networks - Application actions are optimized by receiving actions from one or more distributed applications, translating the received actions into one or more network operation primitives, processing the network operation primitives to determine an optimized set of network operation primitives, determining an optimal execution sequence for the optimized set of network operation primitives, and executing the optimized set of network operation primitives based on the optimal execution sequence. | 09-18-2014 |
20140270762 | SYSTEM AND METHOD FOR DATA CENTER OPTICAL CONNECTION - A connectivity device permits simplified connections for realizing complex networking topologies using lower cost components. The device can be optically passive, or can have an active aspect to control switching to realize additional topology related features. The device permits cabling to be simplified while reducing cost to permit implementations of complex networking topologies to be realized faster and with greater reliability. The device aids in scaling out a network implementation and can provide connectivity for an arbitrary number of nodes with efficient capacity usage. | 09-18-2014 |
20140270763 | SYSTEMS AND METHOD FOR ROUTING DATA - Provided herein are methods and systems for routing data. One embodiment comprises a filter mask and route determination logic. The filter mask is operable to produce a filter value from the data. Then, the route determination logic may determine where the data is to be accepted or rejected based on rules associated with the filter value. Accepted data is prioritized and associated with a particular path in a plurality of paths. | 09-18-2014 |
20140286636 | Optical Transceiver Device - An optical transceiver device has an optical transceiver component, an O/E conversion substrate and a switch control substrate. The optical transceiver component is connected to the first, second optical fiber network equipments for the transmission of optical signal, respectively. The O/E conversion substrate is electrically connected to an in-line equipment at a first location for transmission of electrical signal, and may convert the received optical signal into the electrical signal or convert the received electrical signal into the optical signal. The switch control substrate is electrically connected with an optical switching switch and is connected with the in-line equipment at a second location to receive a control signal for the optical switch from the in-line equipment such that the optical switching switch operates at an normal mode or an bypass mode to guarantee normal network communication of the first, second optical network equipment. | 09-25-2014 |
20140308036 | Branching units and Power line Monitoring Methods - A branching unit includes a supply destination switching section that switches one supply destination of each of a plurality of power lines that supply electric power to a unit that transfers an optical signal received from a terminal station unit through a transmission line to another supply destination corresponding to a control signal received from the terminal station unit; a current detection section that outputs a detection signal that includes information that denotes whether currents are flowing in the plurality of power lines and information that represents current directions if currents are flowing; and a monitor section that transmits a monitored result based on at least one of a plurality of detection signals received from the current detection section to the terminal station unit. | 10-16-2014 |
20140314407 | RF Ingress in Fiber-to-the-Premises - In a communication network, a node at a subscriber premises includes an input/output (I/O) port, and a device for monitoring a subscriber premises. The device includes an upstream signal path including a first switch, a downstream signal path, and a controller having an input/output (I/O) port coupled to the I/O port of the node, and a first output port. The first switch is coupled to the first output port selectively to complete the upstream signal path. | 10-23-2014 |
20140314408 | HARMONIZED CONTROL PLANES, SYSTEMS AND METHODS - A control plane management system is disclosed for distributed or virtualized network fabrics. The system instantiates a harmonized control plane that aids in provisioning resources across layers within a fabric. The system comprises a network fabric interface that couples with a network fabric of interconnected nodes. The system further comprises a control plane management engine coupled with the network fabric interface. The management engine obtains one or more resource profiles related to each of an upper networking layer of the fabric and a lower networking layer of the fabric, and constructs a control plane provisioning policy as a function of the upper and lower networking layer resource profiles. The management engine then instantiates a harmonized control plane, according to the provisioning policy, by creating a harmonized control plane object having rules outlining the responsibilities of the harmonized control plane. | 10-23-2014 |
20140314409 | INTELLIGENT AND SCALABLE ROUTING IN MULTI-DOMAIN OPTICAL NETWORKS - A method of extending the control plane to a metro sub-domain for a network having a transport plane for carrying subscriber traffic within end-to-end connections, and a control plane for managing at least a portion of resources of the transport plane allocated to the connections. A first set of control-plane enabled nodes of the network is designated as core nodes, each core node being operable to route subscriber traffic between a pair of neighbor core nodes in the network. A second set of control-plane enabled nodes of the network is designated as metro nodes, each metro node being connected to a core node and operating as a sub-domain of the network. Each core node that is connected to at least one metro node is designated as a host node. The host node is controlled to advertise summary information of its connected metro nodes to other core and metro nodes in the network, thus making it possible to extend control plane function to the metro nodes that can calculate connection routes, set-up/tear-down connections and perform connection failure recovery functions. | 10-23-2014 |
20140321849 | APPARATUS FOR CONTROLLING A TRANSMISSION PATH - An apparatus includes a switch unit configured to switch signal paths between a plurality of input ports and a plurality of output ports. The apparatus controls the signal paths according to the connection setting information stored in the apparatus. The connection setting information includes first and second connection information. The first connection setting information specifies a first output port to which a signal input via an input port is to be output, in association with identification information identifying the signal, and the second connection setting information specifies a second output port to which the signal is to be alternatively output. The apparatus controls setting of a signal path of the switch unit, based on the second connection setting information in a case where another signal path has been already allocated to the first output port specified by the first connection setting information. | 10-30-2014 |
20140321850 | MODULAR SYSTEM AND METHODS FOR CONNECTING AN EXTERNAL COMMUNICATION NETWORK TO A USER NETWORK OF A BUILDING - A modular system for the connection of an external communication network to a user network of a building includes: a user module including: a passage opening of a connection cable of the user network including optical fibres associated with respective users and adapters associated with respective optical fibres of the connection cable of the user network, and an operator module including: an inlet opening of at least one connection cable to the external communication network including optical fibres and an outlet opening of fibre optic connection elements connected to the external communication network and provided with a connector at a terminal end thereof. The user module and the operator module are structurally independent from each other and the external communication network is operatively associated with the user network by means of a connection of the connectors of the fibre optic connection elements with respective selected adapters of the user module. | 10-30-2014 |
20140334816 | METHOD, APPARATUS, AND SYSTEM FOR PROCESSING DATA ON OTN OPTICAL TRANSPORT NETWORK - A method for processing data on an OTN optical transport network is disclosed in embodiments of the present invention, including: receiving and buffering, through an ILK interface, an Ethernet data frame sent by an Ethernet board; encapsulating the Ethernet data frame into a Generic Framing Procedure GFP data frame; and mapping the GFP data frame to a virtual container of the OTN to form an OTN data frame, and transporting the OTN data frame to a corresponding transparent transmission board through a cross-connect board. An apparatus and a system for processing data on an OTN optical transport network are further disclosed in the embodiments of the present invention. | 11-13-2014 |
20140355983 | FLUID-COOLED ELECTRONIC CIRCUIT DEVICE WITH COOLING FLUID CONDUITS HAVING OPTICAL TRANSMISSION MEDIUM - An electronic circuit device, including a combined optical transmission and cooling fluid conduit network. The network includes at least one cooling conduit having an optical transmission medium. The network is configured to convey a cooling fluid via the at least one cooling conduit and to convey an electromagnetic signal via the optical transmission medium. The network is in thermal communication with a first set of one or more components of the electronic circuit device and in signal communication with a second set of one or more components of the electronic circuit device. The first set and second set of components are at least partly overlapping. A method for conveying optical signal in such an electronic circuit device is also provided. | 12-04-2014 |
20150023661 | OPTIMAL POSITIONING OF REFLECTING OPTICAL DEVICES - Reflecting optical devices are optimally positioned by an all optical switch in an optically-connected system by transmitting optical power readings taken from an optimal monitoring module that are transmitted to the all optical switch for optimal positioning of a reflecting optical device in order to produce maximum optical output power. | 01-22-2015 |
20150030326 | INDUSTRIAL CONTROLLER APPARATUS CAPABLE OF LOW ERROR, ULTRA HIGH-SPEED SERIAL COMMUNICATION AND METHOD FOR DRIVING SAME - An industrial controller includes a control unit, a first optical transmission/reception unit, a second optical transmission/reception unit, and a switching unit. The control unit handles a downlink transmission frame depending on whether or not the Protocol Control Information (PCI) of the downlink transmission frame corresponds to an ID of an industrial controller device, and internally generates and outputs an uplink transmission frame. The first optical transmission/reception unit externally sends or receives the uplink or downlink transmission frame. The second optical transmission/reception unit has at least one port, and externally sends or receives the uplink or downlink transmission frame. The switching unit sequentially transfers the downlink and uplink transmission frames, transfers the uplink transmission frame to the first optical transmission/reception unit, and transfers the downlink transmission frame to the second optical transmission/reception unit. | 01-29-2015 |
20150055950 | SYSTEM AND METHOD FOR INTERCONNECTING PHYSICAL CHANNELS - A system and method for interconnecting physical channels is provided. The system includes a port containing an optical receiver, a port control module, a route determination module, and a connectivity module. The port control module is operably connected to a first physical channel to receive a Fibre Channel frame comprising data and a data header. The route determination module selects a route between the port control module and the second physical channel according to the data header. The connectivity module is operably connected to the port control module and to the route determination module. The connectivity apparatus may switch frames between the port control module and the second physical channel under control of the route determination module in order to transfer Fibre Channel frames to the second physical channel. | 02-26-2015 |
20150055951 | Method for Crosstalk and Power Optimization in Silicon Photonic Based Switch Matrices - Recursive optimization algorithms can be used to determine which idle photonic switching elements to configure in N×N switching fabrics to achieve crosstalk suppression. Different algorithms are used to achieve different levels of optimization. Embodiment full optimization techniques may configure all inactive cells to reduce crosstalk, and consequently may provide the best noise performance and highest power usage. Partial optimizations may configure fewer than all inactive cells to reduce crosstalk, and may provide sub-optimal noise performance at lower power usages. Differential partial optimization algorithms configure inactive cells in different stages of a photonic switching fabric. Fewer than all cells in a given stage may be configured by some algorithms. | 02-26-2015 |
20150063799 | NEW COMMUNICATIONS SYSTEM ARCHITECTURE AND DESIGN - A network device includes a plurality of optical input/output (I/O) units to exchange one or more optical signals with the optical network. The network device further includes a switch fabric to process one or more optical signals exchanged with an optical network. The network device also includes a connector configured to receive a connector to couple the network device to another device. The network device also includes a base layer connecting to the plurality of optical I/O units and the switch fabric. The base layer is included in a connection that does not include a back plane and that enables communications between the plurality of I/O units, the switch fabric, and the connector. | 03-05-2015 |
20150071632 | RECONFIGURABLE OPTICAL INTERCONNECT NETWORK - A network is described in which a base optical point-to-point (P2P) network can be reconfigured to a target network topology. This reconfigurable architecture customizes the network topology for different classes of applications to maximize throughput. In particular, the network can function efficiently at high-radix and low-radix traffic patterns. This capability is obtained using configurable electrical circuit switches at each node in the network. These configurable electrical circuit switches can be set so that incoming packets are directly routed to a specified output (either a local destination or an outgoing optical link) without: delay, contention, or buffers. In this way, predefined network topologies can be configured with improved node-to-node bandwidths when compared to the original P2P network by leveraging unused optical links. Furthermore, because the electrical circuit switches can be reconfigured, the network topology can be dynamically reconfigured to suit applications or application phases. | 03-12-2015 |
20150078745 | SYSTEM AND METHOD FOR DESIGNING AND CONSTRUCTING OPTICAL NETWORKS - A system and method for designing and constructing optical networks is provided. The system comprises: a server, and interactive software program residing on the server, an interactive input device—capable of accessing the interactive software program residing on the server, and a communication network—used to connect the interactive input device to the server. The method comprises: entering network topology information and service demands for a plurality of nodes into the interactive software program residing on the server, having the interactive software program determine the required optical equipment for the nodes, and ordering the required optical equipment for the nodes using the interactive software program. | 03-19-2015 |
20150078746 | NETWORK NODE CONNECTION CONFIGURATION - A system and method for connectivity configuration of a network node permits an optical signal to be passed through the node and shifted from a first connector position to a second connector position that is offset from the first connector position. The shifted optical signal permits a number of distant nodes in the network to be reached with a direct optical connection, which can be configured to be bidirectional. The disclosed connectivity configuration reduces the cabling requirements for the network and simplifies the interconnections. | 03-19-2015 |
20150078747 | OPTICAL LINE TERMINAL DEVICE AND IMPLEMENTATION METHOD THEREOF - An optical line terminal (OLT) device and an implementation method thereof, relate to the field of a passive optical network (PON). The OLT device includes an interface unit for receiving data in an Ethernet format sent by a service processing apparatus, performing protocol processing on the received data in the Ethernet format, converting the data after the protocol processing into a transmission signal corresponding to a sending interface, and then transmitting the transmission signal to an external device, as well as receiving message data sent by the external device, converting the message data for protocol processing corresponding to the service processing apparatus, converting the signal after the protocol processing into data in the Ethernet format, and transmitting the data to the service processing apparatus; the service processing apparatus performing service processing on the data transmitted by the interface unit, and transmitting the processed data to the interface unit. | 03-19-2015 |
20150093109 | PTP TRANSPARENT CLOCK SYSTEM UPGRADE SOLUTION - A transparent clock converter is interposed between a non-precision time protocol (non-PTP) enabled network node and other portions of the network. The transparent clock converter effectively converts the non-PTP node into a transparent clock node. In some embodiments the transparent clock converter includes physical layer devices, but not media access controllers. | 04-02-2015 |
20150098698 | Ultra-compact, Software-defined Fiber Optic Patch-panels - An automated, robotic patch-panel system in a highly compact form factor implementing Knots and Braids switching algorithms is disclosed. This system incorporates stacked layers of connector ports, each row of connector ports defining an arc with a radius of curvature, wherein the radius of curvature is substantially larger than the total height of the stacked layers. A synchronized gripper pair on a three axis actuation system is used to disconnect, weave and connect fibers arbitrarily across an array of dense connector ports on a curvilinear surface. Each row of connector ports is independently translatable by slight rotation to generate the proper relationship between surrounding fibers and the individual fiber undergoing the multi-step reconfiguration process. | 04-09-2015 |
20150104169 | xQSFP+ Host Cable to Upgrade xSFP+ Based Products - Bandwidth translation may be provided. First, data may be transceived at a first data port. Next, the data may be transceived at a plurality of second data ports. The bandwidth of a path for the data between the first port and the plurality of second ports may be translated. | 04-16-2015 |
20150110487 | MAINTAINING A FABRIC NAME ACROSS A DISTRIBUTED SWITCH - Techniques are provided for distributing a fabric name to switching elements of a distributed switch configured to forward Fibre Channel over Ethernet (FCoE) frames. A distributed switch membership distributed (DMFD) message is transmitted that includes names of all switching elements in the distributed switch, and further includes a fabric descriptor that contains the fabric name. | 04-23-2015 |
20150110488 | CONFIGURABLE CLOS NETWORK - A configurable Clos network includes leafs and spines and a switch fabric that connects the leafs and the spines. The switch fabric couples each leaf port of each leaf to at least one spine port of each spine. | 04-23-2015 |
20150131989 | MANAGEMENT AND CONTROL OF SOFTWARE DEFINED NETWORKING ENABLED OPEN TRANSPORT NETWORKS - Apparatuses are disclosed including a node having a switch for communicating traffic from input interface to output interface; and a control module, located proximate to the input interface, output interface and switch, comprising a communication interface configured to connect to a third communication link external to the node and having a processor accessing network node configuration information and being configured to compute a path to a destination node through the output interface with the network node configuration information and also configured to be switched from a first state in which the processor provides first instructions to the switch to configure the switch to communicate the traffic from the input interface to the output interface, to a second state in which the processor provides second instructions, received via the communication interface, to the switch to configure the switch to communicate traffic from the input interface to the output interface. | 05-14-2015 |
20150131990 | OPTICAL SWITCH - An optical switch includes: a first birefringent element; a first Faraday rotator; a first half-wave plate; a second birefringent element; a second half-wave plate; a second Faraday rotator; and a third birefringent element, which are arranged in a forward direction from the front, wherein the first birefringent element splits light in the forward direction from a first optical port into ordinary and extraordinary lights emitted onto first and second optical paths, respectively, the first and second half-wave plates are arranged on the first and second optical paths, respectively, and in the first and second Faraday rotators, a permanent magnetic field in a left-right direction and an external magnetic field in a front-back direction in an on state are applied to a Faraday element, a bidirectional optical path is formed between the first and second optical ports in an off state, and the optical path is interrupted in the on state. | 05-14-2015 |
20150147057 | PLACING A FIBRE CHANNEL SWITCH INTO A MAINTENANCE MODE IN A VIRTUALIZED COMPUTING ENVIRONMENT VIA PATH CHANGE - Techniques for placing a first fibre channel (FC) switch into maintenance mode in a virtualized computing environment in which each data store is connected to at least one host computing system via at least two FC switches are described. In one embodiment, a first active input/output (I/O) path from a data store to a host computing system via the first FC switch is identified. Further, a path change is initiated from the data store to the host computing system via any other FC switch coupled to the data store and the host computing system. | 05-28-2015 |
20150296279 | HIERARCHICAL GUIDED SEARCH FOR N-TUPLE DISJOINT OPTICAL PATHS - A matrix M is used to determine groups of potential regenerator placements and obtain potential end-to-end optical paths by selecting desired sequences of regenerators. Then, a hierarchical guided search may be employed to efficiently select desired N-tuple disjoint optical paths from the potential optical paths. The hierarchical guided search may employ a search graph and a search tree to guide the search and to eliminate candidate nodes and optical paths early in the search process. | 10-15-2015 |
20150304048 | DIGITAL SIGNAL TRANSMITTING APPARATUS FOR ADJUSTING MULTI-CHANNEL SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE - A digital adjusting signal for adjusting a multi-channel SQUID system is transmitted only to a control circuit module including a SQUID channel selected in an embodiment of the present invention and not transmitted to other modules. Accordingly, the digital adjusting signal is prevented from flowing into all SQUID adjusting channels to minimize noise generated by the digital adjusting circuit of the SQUID channel and to stably control the SQUID sensor without malfunction. | 10-22-2015 |
20150304742 | POWER OVER ETHERNET ELECTRICAL TO OPTICAL INTERFACE CONVERTER - A portable, self-powered, interface converter for converting between Ethernet over twisted pair cables and Ethernet over optical fiber is described. In one implementation, the device may include a first interface to a power-over-Ethernet connection and a second interface to provide a connection to receive fiber optic cabling. A power-over-Ethernet (PoE) circuit may derive power from the PoE connection and output a corresponding power signal. A transcoder may perform physical layer conversion between Ethernet communications over twisted pair cabling connected to the first interface and Ethernet communications over the fiber optic cabling. The transcoder may be powered by the power signal output by the PoE circuit. | 10-22-2015 |
20150312659 | System and Method for Photonic Switching - In one embodiment, optical node includes an input port configured to receive an input optical frame and a first optical switch coupled to the input port, where the first optical switch is configured to remove the input optical frame to produce a removed input optical frame when an address of the input optical frame is a node address of the optical node and to pass the input optical frame to a second optical switch when an address of the input optical frame differs from the address of the optical node. The optical node also includes the second optical switch coupled to the first optical switch, where the second optical switch is configured to output the input optical frame to an output port when the address of the input optical frame is not the node address of the optical node and the address of the input optical frame is not an empty address. | 10-29-2015 |
20150318922 | VISIBLE LIGHT COMMUNICATIONS PERSONAL AREA NETWORK CONTROLLER AND ACCESS POINT SYSTEMS AND METHODS - A network, a Visible Light Communications (VLC) controller, and a method relate to a network architecture splitting frame processing functionality between Light Fidelity (LiFi) Access Points (APs) and a VLC controller or virtualized controller. In such configurations, the LiFi APs are so-called thin devices that may be widely deployed through an infrastructure to concurrently provide illumination and network access via VLC protocols such as IEEE 802.15.7 or variants thereof. | 11-05-2015 |
20150319513 | Apparatus and method for managing inner-network element transmission resources - An apparatus for managing inner-network element transmission resources is described. The apparatus includes a resource configuration unit, a resource abstraction unit and a resource sending unit, wherein the resource configuration unit is configured to obtain information of inner-network element transmission resources and to receive a service operation instruction, and to search the resource abstraction unit for an internal path corresponding to the service operation instruction to obtain an operation command for a transmission resource; the resource abstraction unit is configured to perform abstract representation on the information of the transmission resources to obtain internal paths; the resource sending unit is configured to send the operation command for the transmission resource to a corresponding board. A method for managing inner-network element transmission resources is also described. A problem of resource conflicts caused when a management plane and a control plane establish a service simultaneously can be solved by applying the apparatus and method of the disclosure, thus reducing the complexity of operating inner-network element transmission resources by a network management controller and improving the automation capability of the network management controller in service establishment. | 11-05-2015 |
20150334476 | METHODS AND SYSTEMS FOR DISTRIBUTING FIBER OPTIC TELECOMMUNICATION SERVICES TO LOCAL AREAS AND FOR SUPPORTING DISTRIBUTED ANTENNA SYSTEMS - A fiber optic network includes a fiber distribution hub including at least one splitter and a termination field; a plurality of drop terminals optically connected to the fiber distribution hub by a plurality of distribution cables; and a distributed antenna system (DAS). The DAS includes a base station and a plurality of antenna nodes. The base station is optically connected to the fiber distribution hub and the antenna nodes are optically connected to the drop terminals. Example splitters include a passive optical power splitter and a passive optical wavelength splitter. Signals from a central office can be routed through the passive optical power splitter before being routed to subscriber locations optically connected to the drop terminals. Signals from the base station can be routed through the wavelength splitter before being routed to the antenna nodes. | 11-19-2015 |
20150350753 | Scalable Silicon Photonic Switching Architectures for Optical Networks - Hybrid dilated Benes photonic switching architectures employ an arrangement of two-by-one (2×1) photonic and two-by-two (2×2) photonic elements to enjoy improved cross-talk performance while maintaining moderate cell counts. A jumpsuit switch optical network node architecture comprising multiple stages may operate more efficiently than single stage switching fabrics, by enabling manipulation of connectivity in some stages to achieve load balancing over other stages. Specifically, a first stage of switching fabrics connected to input ports of the optical node may be manipulated to load balance incoming signals over a second stage of switching fabrics coupled to output ports of the optical node. Additionally, a third stage of switching fabrics connected to add ports of the optical node may be manipulated to load balance added optical signals over the second stage of switching fabrics. | 12-03-2015 |
20150358431 | ENHANCED DATA COMMUNICATIONS IN AN OPTICAL TRANSPORT NETWORK - Techniques are described herein for enabling mapping of virtual lanes for data streams for transmission over an optical transport network (OTN). Line encoded data blocks of a first data stream are distributed at an endpoint device in an OTN. The line encoded data blocks of the first data stream are distributed across a plurality of second data streams such that the second data streams can be processed at a lower data rate than a data rate associated with the first data stream. A transcoding operation is performed on the data packets of each of the second data streams to generate transcoded data packets. The transcoded data packets are processed such that the transcoded data packets of each of the second data streams can be sent over the OTN at the lower data rate. | 12-10-2015 |
20150358701 | RING IN RING PASSIVE OPTICAL NETWORK SYSTEM FOR PROVIDING FIBER TO THE HOME WITH REDUCED NUMBER OF FIBERS - A mini-optical line termination (OLT) includes at least one management card for providing control and management functions. A plurality of network cards having a predetermined number of ports are configured to support a predetermined number of subscribers by providing a gigabit passive optical network to the subscribers. At least one network device is coupled to an upstream device and the plurality of network cards. The at least one network device is configured to control the forwarding of data between the upstream device and the subscribers. | 12-10-2015 |
20150365170 | SYSTEM FOR IMPLEMENTING A RADIO OVER FIBER TRANSMISSION IN A PASSIVE OPTICAL NETWORK - A system for implementing a radio over fiber (RoF) transmission in a passive optical network (PON), said passive optical network comprising a trunk line, a remote node, and a plurality of leaf nodes connected to said remote node, wherein one of said plurality of leaf nodes comprises a baseband processing unit for performing a baseband processing on a signal received via said trunk line to perform the transformation to radio over fiber by generating a radio over fiber signal and to forward the resulting radio over fiber signal to said remote node, wherein said remote node is adapted to forward the radio over fiber signal received from said leaf node to the other leaf nodes of said passive optical network. | 12-17-2015 |
20150373640 | OPTICAL-WIRELESS ACCESS SYSTEM - A method of operating an optical-wireless access system, wherein an ONU obtains information on dynamic scheduling control of the optical-wireless access system, information on discontinuous reception control of the optical-wireless access system, or both of them, and such information is used in the ONU or transferred to an OLT and used as parameters of scheduling in the PON and sleep control. | 12-24-2015 |
20160007102 | DATA CENTER PATH SWITCH WITH IMPROVED PATH INTERCONNECTION ARCHITECTURE - A data center path switch architecture permits path switching of the signal path of incoming signals to one or more output paths in real time without the need for manual intervention, and without delays associated with current data center network switches. In this architecture, a switching core capable of switching signals directly from the ingress of the switching core to alternate destination ports in real time, either under software or hardware control. | 01-07-2016 |
20160020858 | FIBER OPTIC COMMUNICATIONS AND POWER NETWORK - A fiber optic-based communications network includes: a power insertion device, connected to multiple fiber links from a data source, configured to provide power insertion to a hybrid fiber/power cable connected to at least one fiber link of the multiple fiber links; the hybrid fiber/power cable, connecting the power insertion device to a connection interface device, configured to transmit data and power from the power insertion device to the connection interface device; and the connection interface device, configured to provide an interface for connection to an end device via a power over Ethernet (PoE)-compatible connection and to provide optical to electrical media conversion for data transmitted from the power insertion device to an end device via the hybrid fiber/power cable and the PoE-compatible connection. | 01-21-2016 |
20160028586 | DATA CONNECTIVITY SYSTEMS AND METHODS THROUGH PACKET-OPTICAL SWITCHES - Systems and methods for providing a data service through a packet-optical switch in a network include, subsequent to defining a loop-free forwarding topology for the data service in the network, if the packet-optical switch is a degree 2 site for the data service, providing the data service through the packet-optical switch at a Layer 1 protocol bypassing a partitioned packet fabric of the packet-optical switch; and if the packet-optical switch is a degree 3 or more site for the data service with multi-point connectivity, providing the data service through the packet-optical switch at the Layer 1 protocol and at a packet level using the partitioned packet fabric to provide the data service between the multi-point connectivity and to associated OTN connections for each degree of the degree 3 or more site. | 01-28-2016 |
20160028638 | METHOD AND SYSTEM FOR IMPROVING BANDWIDTH ALLOCATION EFFICIENCY - Provided are a method and system for improving bandwidth allocation efficiency, relating to optical communication field. In a PON system, an ONU detects each TCONT of the ONU in real time, and sends to an OLT a private message used for reporting buffer overflow when detecting that buffer overflow occurs on a TCONT; the OLT sends, according to the received private message used for reporting the buffer overflow, to the ONU a private message used for instructing the ONU to activate an overflow allocation mechanism; after receiving the private message used for instructing the ONU to activate the overflow allocation mechanism, the ONU activates the overflow allocation mechanism, calculates an actual traffic of a buffer of the TCONT, and sends the actual traffic of the buffer of the TCONT to the OLT; and the OLT dynamically allocates bandwidth to the TCONT according to the actual traffic of the buffer of the TCONT. | 01-28-2016 |
20160037240 | Data Scheduling and Switching Method, Apparatus, System - Embodiments of the present invention relate to the communications field, and in particular, to a data scheduling and switching method, apparatus, and system. A data packet is distributed to an optical switching unit or an electrical switching unit for switching by using a control policy, and the optical switching unit and the electrical switching unit are used, so that an optical switching resource and an electrical switching source can be better scheduled in a comprehensive manner, and a switching bottleneck of an electrical switching device is overcome. The data packet may be switched by using an electrical packet switching module of the data switching apparatus, or may be switched by using an optical packet switching module. | 02-04-2016 |
20160037242 | METHOD AND NODE FOR ADJUSTING LINE INTERFACE RATE - The present invention provides a method, which including: determining, by a first node, an adjustment requirement for a line interface rate; and according to the adjustment requirement for the line interface rate, adjusting, by the first node, a transport bandwidth of an optical channel (OCh) link, adjusting the number of optical channel transport lanes (OTLs) in an optical channel transport unit (OTUCn) link, and adjusting the number of optical channel data lanes (ODLs) in an optical channel data unit (ODUCn) link, where the OTL is in one-to-one correspondence with the ODL. In embodiments of the present invention, according to an adjustment requirement for a line interface rate, a transport bandwidth of an OCh link is adjusted, the number of OTLs in an OTUCn link is adjusted, and the number of ODLs in an ODUCn link is adjusted, so that the line interface rate can be dynamically adjusted. | 02-04-2016 |
20160043900 | Port Configuration Method and Device for Home Gateway - Provided are a port configuration method and device for a Home Gateway (HG). The method includes: performing, on an Optical Network Unit (ONU), first matching on a feature code reported by the HG; reporting the feature code of the HG which succeeds in the first matching to an Element Management System (EMS) for second matching; and transmitting port data configuration information to the HG which succeeds in the second matching to perform port configuration. By the technical solution, the technical problems of false reporting of an illegal HG and the like in a feature code matching process of the port data configuration solution in a related art are solved, and access of an HG not within the range of feature codes is avoided. | 02-11-2016 |
20160044391 | METHOD AND APPARATUS FOR UNIFYING AN EPON ACCESS NETWORK AND A COAX-BASED ACCESS NETWORK - A MSO deploying a standard OLT, and installed with ONUs to be used by customers to whom the MSO can connect using optical fiber. For customers that cannot be reached with optical fiber, the MSO deploys a converter between the optical fiber and the coax network so that the MSO can use the same standard OLT, and use CNUs for those customers attached to the coax network. | 02-11-2016 |
20160044392 | ODUFLEX RESIZING SYSTEMS AND METHODS - An Optical channel Data Unit flex (ODUflex) resizing method, node, and network include determining that the ODUflex needs resizing, wherein the ODUflex is configured in the network on a current path between the node and a second node in the network; when the resizing is a decrease, reducing a size of the ODUflex by i) a resize decrease operation using a control plane or ii) a Link Aggregation Group and Make-Before-Break operation; and, when the resizing is an increase, increasing a size of the ODUflex by i) a resize increase operation using a control plane or ii) a Link Aggregation Group and Make-Before-Break operation. The method provides hitless resizing without using ITU Recommendation G.7044/Y.1347 (10/11) and can perform the reducing or the increasing changing bandwidth of the ODUflex by approximately 100 G in less than a second. | 02-11-2016 |
20160047991 | Optical Switch Architecture - An optical switch comprises a first stage comprising N optical inputs, wherein N is an integer power of 2 and is 16 or greater, and N first sub-switches, wherein each first sub-switch comprises 1 of the optical inputs and 4 first outputs, and a second stage coupled to the first stage and comprising 16 second sub-switches, wherein each second sub-switch comprises M second inputs and M second outputs, and wherein M is equal to N/4. | 02-18-2016 |
20160050470 | SYSTEMS AND METHODS FOR MANAGING EXCESS OPTICAL CAPACITY AND MARGIN IN OPTICAL NETWORKS - A method, a network element, and a network include determining excess margin relative to margin needed to ensure performance at a nominal guaranteed rate associated with a flexible optical modem configured to communicate over an optical link; causing the flexible optical modem to consume most or all of the excess margin, wherein the capacity increased above the nominally guaranteed rate includes excess capacity; and mapping the excess capacity to one or more logical interfaces for use by a management system, management plane, and/or control plane. The logical interfaces can advantageously be used by the management system, management plane, and/or control plane as one of restoration bandwidths or short-lived bandwidth-on-demand (BOD) connections, such as sub-network connections (SNCs) or label switched paths (LSPs). | 02-18-2016 |
20160057515 | SIGNAL ROUTING - An upgradable optical route for tis use in an optical switching network is disclosed. In an initial configuration, the optical router contains wavelength selective switches configured to switch optical signals having WDM wavelengths positioned in a grid having exactly 100 GHz (about 0.8 nm) spacing in optical frequency, aka fixed grid. The interface ports and optical backplane within the optical switch contain an optical splitter and optical coupler and additionally space for a second selective switch. At a later point in time, a second wavelength selective switch can be added to provide additional capabilities such as switching wavelengths positioned in at flexible grid. | 02-25-2016 |
20160057518 | FLEXIBLE SMART SLEEVE SYSTEMS AND METHODS FOR PLUGGABLE TRANSCEIVERS - A flexible smart sleeve system for a pluggable transceiver includes a pluggable sleeve configured to selectively engage a pluggable transceiver; a smart enclosure configured to selectively engage a host device, wherein the host device is configured for the pluggable transceiver; and a flexible cable connecting the pluggable sleeve to the smart enclosure. A network with a flexible smart sleeve system for a pluggable transceiver includes a network switch; a customer premises switch comprising a host cage configured for the pluggable transceiver; and a flexible smart sleeve system configured to engage the host cage and to engage the pluggable transceiver, wherein the flexible smart sleeve system is configured to provide Operations, Administration, and Maintenance (OAM) to the network switch. | 02-25-2016 |
20160065500 | SWITCH, SWITCHING SYSTEM, SWITCHING NETWORK CHIP COMPONENT, AND FORWARDING CHIP COMPONENT - Disclosed are a switch, a switching system, a switching network chip component, and a forwarding chip component. The switch includes: a switching network chip component packaged as an independent device, a forwarding chip component packaged as an independent device, and a controller. The switching system includes at least one switch and at least two network devices connected to the switch. The switching network chip component includes: a first cartridge housing, a switching network chip, a first heat dissipation component, and a first power supply component arranged inside the first cartridge housing. The forwarding chip component includes: a second cartridge housing, a forwarding chip, a second heat dissipation component, and a second power supply component arranged inside the second cartridge housing. | 03-03-2016 |
20160065693 | SYSTEMS, METHODS, AND APPARATUS FOR CONTROLLING THE ELEMENTS OF SUPERCONDUCTING PROCESSORS - A computer system employs a network that between a data programming system and one or more superconducting programmable devices of a superconducting processor chip. Routers on the network, such as first-, second- and third-stage routers direct communications with the superconducting programmable devices. A superconducting memory register may load data signals received from a first-stage router into corresponding superconducting programmable devices. The system may employ additional superconducting chips, first-, second- or third-stage routers. | 03-03-2016 |
20160066070 | NETWORK AGGREGATION IN A COMPUTING SHELF/TRAY - Embodiments of the present disclosure provide arrangements for aggregating network traffic of compute nodes of various computing sleds of computing trays of a computing rack assembly in a data center. In one embodiment, a computing rack assembly may include a plurality of computing trays. A computing tray may removably include a number of sleds. Each sled may include a number of compute nodes. The computing tray may further include an optical network aggregation component to aggregate network traffic of the compute nodes of various sleds of a computing tray. Other embodiments may be described and/or claimed. | 03-03-2016 |
20160073181 | USER MODULES AND METHODS FOR CONNECTING EXTERNAL COMMUNICATION NETWORKS - A user module for connecting an external communication network to a user network of a building may include: a box-shaped body; a plurality of adapters configured to associate to respective optical fibre units of at least one optical cable of the user network; and/or patch panel, between upper and lower walls of the box-shaped body, configured to receive the plurality of adapters and configured to define adjacent compartments within the user module. The patch panel may be housed in the box-shaped body. The patch panel may be configured to move between a rest position, at which the patch panel is completely housed within the box-shaped body, and a connecting position, at which the patch panel is at least partially extracted from the box-shaped body. | 03-10-2016 |
20160080842 | DATA TRANSMISSION METHOD, APPARATUS, AND SYSTEM - A data transmission method, apparatus, and system can implement stable and reliable data transmission between Ethernet devices by using an optical switching device. The method includes: acquiring, by a transmit end device, first data; performing first scrambling processing on the first data by using a scrambler, so as to generate second data; generating, according to the second data, an optical data packet that includes an optical data frame, where the optical data frame includes a field of a first preamble; and sending an optical signal that carries the optical data packet to a optical switching device, so that the optical switching device performs switching processing on the optical signal, so as to send the optical data frame to a second Ethernet device. | 03-17-2016 |
20160080843 | OPTICAL ENGINES AND OPTICAL CABLE ASSEMBLIES HAVING ELECTRICAL SIGNAL CONDITIONING - Optical engines and optical cable assemblies incorporating optical engines providing duty cycle correction on multiplexed low-speed signals are disclosed. In one embodiment, an optical engine includes a low-speed Tx line, a low-speed Rx line, an optical transceiver device, and a control circuit. A low-speed Tx signal is transmitted on the low-speed Tx line and a low-speed Rx signal is received on the low-speed Rx line. The optical transceiver device further includes a laser control pin operable to control a laser configured to provide light on an optical Tx lane, and an optical detect pin operable to provide an indication as to light detected at an optical Rx lane. A Tx signal conditioning circuit configured to condition the low-speed Tx signal is coupled to the laser control pin, and/or a Rx signal conditioning circuit configured to condition the low-speed Rx signal is coupled to the optical detect pin. | 03-17-2016 |
20160087725 | FLEXIBLE HEAD-END CHASSIS SUPPORTING AUTOMATIC IDENTIFICATION AND INTERCONNECTION OF RADIO INTERFACE MODULES AND OPTICAL INTERFACE MODULES IN AN OPTICAL FIBER-BASED DISTRIBUTED ANTENNA SYSTEM (DAS) - Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules (RIMs) and optical interface modules (OIMs) in an optical fiber-based distributed antenna system (DAS) are disclosed. In one embodiment, the flexible head-end chassis includes a plurality of module slots each configured to receive either a RIM or an OIM. A chassis control system identifies an inserted RIM or OIM to determine the type of module inserted. Based on the identification of the inserted RIM or OIM, the chassis control system interconnects the inserted RIM or OIM to related combiners and splitters in head-end equipment for the RIM or OIM to receive downlink communication signals and uplink communications signals for processing and distribution in the optical fiber-based DAS. In this manner, the optical fiber-based DAS can easily be configured or reconfigured with different combinations of RIMs and OIMs to support the desired communications services and/or number of remote units. | 03-24-2016 |
20160087846 | VIRTUAL OPTICAL NETWORK PROVISIONING BASED ON MAPPING CHOICES AND PATTERNS - Virtual optical network (VON) provisioning using implicit encoding of mapping constraints may include evaluating mapping choices to exclude certain mapping patterns before evaluating the mapping patterns. For each virtual node in a VON request, candidate physical nodes may be assigned and evaluated for compliance with constraints associated with the VON request. The constraints may be expanded to allow for various selection criteria for the VON request. Multiple VON requests may be simultaneously evaluated to find optimal solutions for the physical network. | 03-24-2016 |
20160088373 | DATA RECEIVING AND SENDING METHODS AND APPARATUSES AND SYSTEM - The present invention discloses data receiving and sending methods and apparatuses and a system, and relates to the field of communications technologies. The data receiving method includes: receiving a data carrier; deciding polar radius values of multiple labeled constellation points carried at a pre-determined location in the data carrier, to determine a numerical value indicated by a polar radius value of each labeled constellation point in the multiple labeled constellation points; determining, according to a sequence including numerical values indicated by polar radius values of all the labeled constellation points in the multiple labeled constellation points, a demodulation scheme of a constellation point, other than the multiple labeled constellation points, carried in the data carrier; and demodulating, according to the determined demodulation scheme, the constellation point, other than the multiple labeled constellation points, carried in the data carrier. | 03-24-2016 |
20160088377 | METHOD AND APPARATUS FOR VIRTUALIZING PASSIVE OPTICAL NETWORK, AND PASSIVE OPTICAL NETWORK VIRTUALIZATION SYSTEM - Embodiments of the present invention provide a method and an apparatus for virtualizing a passive optical network, and a passive optical network virtualization system. The method includes: receiving a virtualized passive optical network creation message, where the virtualized passive optical network creation message includes an ID of a to-be-created VPON and at least one wavelength flow identifier λ-flow ID; and establishing, according to the VPON ID and the at least one λ-flow ID, a communication connection relationship with at least one optical network unit in the virtualized passive optical network identified by the VPON ID. According to the method provided by the embodiments of the present invention, on one hand, complex networking performed to deal with different application scenarios is avoided. | 03-24-2016 |
20160094901 | System and Method for Providing Multi-Provider Telecommunications Services Over a Passive Optical Network - A method for providing access to a passive optical network for services to homes or businesses from two or more telecommunications service providers and a billing means is described. A first service provider connects to a point of presence at one side of passive optical network. The provider transmits the appropriate services through this network to an authorization receiver. The authorization receiver is used to receive a periodic authorization code from the network provider to enable the appropriate services from the service provider to be transmitted to a subscriber at a home or business. The authorization receiver enables an optical fiber path to be established for the services to flow to and from the home or business. The authorization code that is transmitted through the network also provides an unambiguous means to provide a billing record such that the service provider can be billed by the network provider on an individual service address connected basis in conjunction with a record of houses passed and not yet connected. | 03-31-2016 |
20160099779 | RADIO-OVER-FIBER (ROF) SYSTEM FOR PROTOCOL-INDEPENDENT WIRED AND/OR WIRELESS COMMUNICATION - A switched wireless system is used to increase the range of peer-to-peer communications. The optically-switched fiber optic communication system includes a head-end unit (HEU) having a switch bank. Cables couple the HEU to one or more remote access points in different coverage areas. The switch bank in the HEU provides a link between the remote access points in the different coverage areas such that devices in the different cellular coverage areas communicate with each other, such as through videoconferencing. By using the switched communication system, the range and coverage of communication between devices may be extended such that devices in different coverage areas and devices using different communication protocols can communicate. | 04-07-2016 |
20160100234 | OPTICS DEVICE PORT CONFIGURATION SYSTEM - An optics device port configuration system includes a switch. A first optics device and a second optics device are connected to the switch. A cable connects the first optics device and the second optics device to provide a link. The switch determines that an optics type of the first optics device is unavailable. In response, the switch applies each of a plurality of fiber optics configurations on the switch until either the link becomes available or each of the fiber optics configurations have been applied without the link becoming available. In response to each of the fiber optics configurations having been applied without the link becoming available, the switch applies each a plurality of copper optics configurations on the switch until the link becomes available. In response to the link becoming available, the switch provides at least one setting on the switch until errors are not occurring on the link. | 04-07-2016 |
20160112303 | PACKET OR PASSIVE OPTICAL NETWORK SYSTEM WITH PROTECTION SWITCHING CAPABILITIES - A packet or passive optical network system with packet-based protection switching capabilities is provided. The system performs comprehensive protection switching against failures in all segments of a passive optical network (PON), thereby implementing lossless protection switching against failures in any segment in a packet network and against failures in any segment of the PON that consists of optical line terminals (OLTs), optical cables, optical network units (ONUs) of a PON system. | 04-21-2016 |
20160112306 | METHOD, APPARATUS AND SYSTEM FOR ESTABLISHING OPTICAL BYPASS - Provided are a method, an apparatus and a system for establishing an optical bypass. The method includes: a route controller sending an optical bypass establishment request carrying information about an ingress node, an egress node and a required bandwidth to an optical transmission controller; and setting a second flow forwarding entry corresponding to the optical bypass for the ingress node and the egress node and sending the set second flow forwarding entry to the ingress node and the egress node when receiving an establishment success notification sent by the optical transmission controller, the establishment success notification being used for indicating that the optical transmission controller has allocated the optical bypass according to the optical bypass establishment request, set a first flow forwarding entry corresponding the bypass for each optical transmission device in the optical bypass, and sent the set first flow forwarding entry to a corresponding optical transmission device. | 04-21-2016 |
20160112327 | OPTICAL AND PACKET PATH COMPUTATION AND SELECTION SYSTEMS AND METHODS - A method for path computation in a network includes determining dynamic link weights for links in the network, responsive to a request for a path, for a connection, between a source node and a destination node in the network with a requested bandwidth amount, wherein the dynamic link weights, for each link, are based on a current status of the link and a future status of the link; determining one or more paths for the request based on the dynamic link weights; and selecting a path of the one or more paths to minimize cost in the network. The method can be implemented through a Software Defined Networking (SDN) controller. | 04-21-2016 |
20160112777 | ADVANCED FIBER NODE - Circuitry of a hybrid fiber-coaxial network may comprise a first transceiver configured to connect the circuitry to an optical link, a second transceiver configured to connect the circuitry to an electrical link, a first processing path, a second processing path, and a switching circuit. In a first configuration, the switching circuit may couple the first transceiver to the second transceiver via the first processing path. In a second configuration, the switching circuit may couple the first transceiver to the second transceiver via the second processing path. The first transceiver may comprise a passive optical network (PON) transceiver and the second transceiver may comprise a data over coaxial service interface specification (DOCSIS) physical layer transceiver. The switching circuit may be configured based on the type of headend to which the circuitry is connected. | 04-21-2016 |
20160112778 | Optical Network Unit, and Communications System and Method - An optical network unit (ONU), a communication system and a communication method are disclosed. The ONU includes a passive optical network media access control (PON MAC) module and a processing module, the processing module includes a physical bridge submodule and at least two ONU submodules connected with the physical bridge submodule, different ONU submodules correspond to different identification information; the PON MAC module is configured to: be connected with the processing module, determine corresponding ONU submodules according to identification information in network side data, and send the network side data to the physical bridge submodule; the physical bridge submodule is configured to: distribute the network side data to corresponding ONU submodules according to the ONU submodules determined by the PON MAC module; and the ONU submodule is configured to: process the received data, and send the data to the user interface module corresponding to the ONU submodule. | 04-21-2016 |
20160112779 | Touchless Fiber Network - Novel tools and techniques are provided for implementing point-to-point fiber insertion within a passive optical network (“PON”) communications system. The PON communications system, associated with a first service provider or a first service, might include an F1 line(s) routed from a central office or DSLAM to a fiber distribution hub (“FDH”) located within a block or neighborhood of customer premises, via at least an apical conduit source slot, an F2 line(s) routed via various apical conduit components to a network access point (“NAP”) servicing customer premises, and an F3 line(s) distributed, at the NAP and from the F2 Line(s), to a network interface device or optical network terminal at each customer premises via various apical conduit components (e.g., in roadway surfaces). Point-to-point fiber insertion of another F1 line(s), associated with a second service provider or a second service, at either the NAP or the FDH (or outside these devices). | 04-21-2016 |
20160112780 | Interconnection System, Apparatus, and Data Transmission Method - An interconnection system, an apparatus, and a data transmission method. In the interconnection system, to-be-transmitted data is converted into a data packet in an optical signal form for transmission, and a control packet corresponding to the data packet is transmitted in an electrical signal form and includes routing information of the data packet. When the control packet passes through a switching node, the switching node directly determines, according to the routing information in the control packet, a neighboring node that serves as a next hop, and opens, in the switching node, an optical path used to transmit the data packet. Because no optical-to-electrical or electrical-to-optical conversion needs to be performed on the control packet and the data packet during an entire transmission procedure, problems of an extra delay and power consumption caused by electrical-optical-electrical conversion can be reduced, thereby improving data transmission efficiency. | 04-21-2016 |
20160119696 | SYSTEMS AND METHODS FOR INCREASING BANDWIDTH IN A COMPUTER NETWORK - Systems and methods for increasing bandwidth in a computer network are provided. A computer network can include a first lower level switch, first and second upper level switches, and first and second passive optical splitters, and a mirror. The first passive optical splitter can have a first port directly coupled to the first upper level switch, a second port directly coupled to the second upper level switch. The second passive optical splitter can have a port directly coupled to a port of the first passive optical splitter, and a port directly coupled to the first lower level switch. The mirror can be coupled to a port of the second passive optical splitter and reflect an optical signal received from the second passive optical splitter to the first upper level switch and second upper level switch through the second passive optical splitter and the first passive optical splitter. | 04-28-2016 |
20160124175 | APPARATUS FOR FIBER-TO-THE-PREMISES AND NETWORK SYSTEM THEREOF - Splitter housings suitable for a rapid deployment of an FTTX network system are disclosed. For some embodiments, a splitter housing splits one of many input optical fibers to a plurality of output optical fibers and keeps the rest of input optical fibers for future network expansion. For other embodiments, a splitter housing splits one of many input optical fibers to a plurality of output optical fibers and terminates the rest of input optical fibers at an output multi-fiber connector port. For network system embodiments, two or more splitter housings are optically connected in series to deploy a FTTX network system. | 05-05-2016 |
20160134394 | FEC CODING IDENTIFICATION - The present invention is directed to data communication systems and methods. More specifically, embodiments of the present invention provide techniques for transceivers to quickly identify FEC mode used in data communication. A transmitting transceiver embeds FEC mode information in a designated field of an alignment marker. The receiving transceiver acknowledges the receipt of the FEC mode information and processes the incoming data accordingly. There are other embodiments as well. | 05-12-2016 |
20160134951 | SYSTEM, APPARATUS AND METHOD FOR SUPPORTING MULTIPLE-INTERFACES FOR OPTICAL FIBER COMMUNICATION - A multiple-interface apparatus and method and networking device including the same. The multiple-interface apparatus including: a plurality of system side lanes configured to connect to an electrical signal source; and a plurality of line side lanes, wherein the number of the plurality of line side lanes matches the number of the plurality of system side lanes, including: a first set of line side lanes configured to connect to a first optical transceiver module; and a second set of line side lanes configured to connect to a second optical transceiver module; a mode selector module that can be set to transmit the electrical signal to the first optical transceiver module on the first set of line side lanes or the second optical transceiver module on the second set of line side lanes; and an adaptation module to adapt the electrical signal for at least one of the first set of line side lanes or the second set of line side lanes. | 05-12-2016 |
20160134953 | SHARED PROTECTION IN OPTICAL NETWORKS - A device for shared protection in an optical network may include a processor circuit. The processor circuit may be configured to transmit optical signals over an optical network port to a first set of optical network units (ONUs), receive an indication that an optical line terminal (OLT) is unavailable to service a second set of ONUs, transition to a protection operation mode from a normal operation mode in response to indication, and transmit optical signals over the optical network port to the first and second set of ONUs. The optical signals may include resource allocation information for at least some of the first and second set of ONUs. The device may operate as a working OLT for the first set of ONUs when in the normal operation mode. The device may operate as the working OLT for the first and second set of ONUs when in the protection operation mode. | 05-12-2016 |
20160134954 | METHOD AND APPARATUS FOR DATA PACKET SWITCHING, ACCESS SWITCH AND SWITCHING SYSTEM - The present invention provides a method and an apparatus for data packet switching, and an access switch and a switching system, so as to satisfy requirements of a datacenter for a switching bandwidth and a switching granularity. The method includes: receiving MAC frame control information; determining an interface used for forwarding an MAC frame according to the MAC frame control information and through performing a query on a MAC address forwarding table, where the interface used for forwarding the MAC frame includes a downlink interface, an uplink electrical packet switching network interface and/or an uplink optical packet switching network interface; transmitting a control signal to an electrical packet switching unit, so that the MAC frame is forwarded to the determined interface. According to the method provided in the present invention, the utilization rate of each interface can be improved. | 05-12-2016 |
20160142796 | GCC0 TUNNELING OVER AN OTN TRANSPORT NETWORK - Systems and methods for tunneling GCC0 bytes over an OTN transport network are disclosed. The method includes receiving, at a first network element, a first data frame comprising a set of management bytes and a set of data bytes, determining whether the set of management bytes should be tunneled, and, in response to determining that the management bytes should be tunneled, sending, to a second network element, a second data frame comprising the set of management bytes and the set of data bytes. | 05-19-2016 |
20160149756 | METHODS AND APPARATUS TO UPGRADE COMMUNICATION SERVICES IN SUBSCRIBER DISTRIBUTION AREAS - An optical network unit (ONU) is installed to communicate with an optical line terminal (OLT) located at a remote terminal (RT). The ONU includes a first subscriber downlink interface to serve a first subscriber premises and a second subscriber downlink interface to serve a second subscriber premises. The RT is located apart from a central office (CO) and in communication with the CO. A first removably attachable subscriber downlink module is communicatively coupled to the first subscriber downlink interface. A second removably attachable subscriber downlink module is communicatively coupled to the second subscriber downlink interface. The first removably attachable subscriber downlink module is replaced with a third removably attachable subscriber downlink module. An optical transmission medium is connected between the third removably attachable subscriber downlink module and the first subscriber premises while retaining a second electrically conductive medium communicatively coupled to the second subscriber downlink interface. | 05-26-2016 |
20160149802 | APPARATUS AND METHOD FOR PROTECTION SWITCHING IN SHARED MESH NETWORK - A communication terminal performing protection switching in a shared mesh network is provided. The communication terminal configured to transmit and receive data traffic associated with a first working path may include a processor configured to encode, in an optical channel data unit (ODU) including the data traffic, a first operation command message to be received from a first end node, and a communicator configured to transmit the ODU to a neighboring node, in which the first end node is present in a second working path. | 05-26-2016 |
20160150302 | MINI-OPTICAL NETWORK TERMINAL (ONT) - The present invention relates to passive optical network (PON), and in particular, to an optical network terminal (ONT) in the PON system. In one embodiment, the optical network terminal includes a first interface coupled to a communications network, a second interface coupled to a network client and a processor including a memory coupled to the first interface and to the second interface, wherein the processor is capable of converting optical signals to electric signals, such that the network client can access the communications network. | 05-26-2016 |
20160156478 | CONTROL METHOD, DEVICE AND OPTICAL TRANSCEIVER | 06-02-2016 |
20160156997 | VIRTUALIZED OPTICAL TRANSPORT NETWORK SYSTEMS AND METHODS | 06-02-2016 |
20160157000 | METHOD AND APPARATUS FOR ESTABLISHING TRAIL NETWORK | 06-02-2016 |
20160164607 | LED LIGHT GLOBAL POSITIONING AND ROUTING COMMUNICATION SYSTEM - An LED light and communication system includes at least one optical transceiver, the optical transceiver including a light support and a processor. The light support has a plurality of light emitting diodes and at least one photodetector attached thereto. The processor is in communication with the light emitting diodes and the at least one photodetector, where the processor is constructed and arranged to illuminate at least one of the light emitting diodes to generate a light signal which in turn includes at least one embedded data packet. The at least one embedded data packet communicates global positioning system (GPS) location information. | 06-09-2016 |
20160165325 | MULTI-FUNCTION BEACON FOR OPTICAL COMMUNICATIONS LASER RELAY - A laser relay module in a free space optical communication network includes: a beacon source for generating an optical beacon signal for aligning a communication channel of a source optical node to a communication channel of a receiving optical node; a beacon inserter for encoding the optical beacon signal with switching information; a telescope for transmitting the encoded optical beacon signal to the receiving optical node; a beacon detector for detecting received switching information from the modulated optical beacon signal, wherein the receiving optical node uses the encoded optical beacon signal to align communication channel of the receiving optical node with communication channel of the source optical node; and a processor for using the detected switching information to change configuration of an optical switch matrix to direct received data to a next optical node in the free space optical communication network. | 06-09-2016 |
20160182153 | Uplink Signal Transmission Method, Processing Device, and System | 06-23-2016 |
20160191168 | INTRA-TRANSCEIVER OPTICAL SUPERCHANNEL SWITCHING VIA RF SUB-BAND MULTIPLEXING TECHNIQUE - Systems and methods are disclosed for data communication by performing RF sub-band multiplexing and demultiplexing by cascading a radio-frequency (RF) mixing module and optical dual-polarized (DP) QPSK modulator forhybrid RF/optical IQ modulation; and performing intra-transceiver optical superchannel switching through the RF sub-band multiplexing. | 06-30-2016 |
20160191219 | HARDWARE AND SOFTWARE METHODOLOGIES FOR DYNAMIC RESOURCE ALLOCATION IN VIRTUALIZED FLEXIBLE-GRID OPTICAL NETWORKS - Embodiments of the present invention are directed to systems and methods for allocating spectrum of a flexible-grid optical network to a plurality of virtual links. Given a set of optical channels of different line rates and channel widths, a user can reserve one of the optical channels as a long-term reservation. The user can later elect to downgrade its optical channel to a smaller optical channel with lower line rate and less spectrum, for example, when the user's traffic demands decrease. The user may return (e.g., sell or de-allocate) an amount of unused spectrum to the carrier, and the carrier creates and manages a resource pool to gather unused spectrum from users. When the user's traffic increases, the user may obtain (e.g., purchase) additional spectrum from the carrier's resource pool and/or upgrade the user's optical channel to an optical channel having a higher line rate. | 06-30-2016 |
20160192043 | SWITCHABLE OPTICAL AMPLIFIER AND OPTICAL TRANSMISSION APPARATUS - A switchable optical amplifier includes: a first optical amplifier; a second optical amplifier; and an optical switch which includes first and second input ports and first and second output ports, the optical switch that switches between a first connection state where the first input port and the first output port are in an optical connection and the second input port and the second output port are in a no optical connection and a second connection state where the first input port and the second output port are in an optical connection and the second input port and the first output port are in an optical connection, wherein an output of the first optical amplifier is optically coupled to the first input port of the optical switch, an input of the second optical amplifier is optically coupled to the second output port of the optical switch. | 06-30-2016 |
20160197691 | DATA MIGRATION METHOD AND COMMUNICATIONS NODE | 07-07-2016 |
20160205452 | NETWORK INTERFACE DEVICE FOR OPTICAL PREMISES SIGNALS AND NETWORKS | 07-14-2016 |
20160255425 | OPTICAL LINK CLOCK RECEIVER | 09-01-2016 |
20160380838 | NETWORK NODE CONNECTION CONFIGURATION - A system and method for connectivity configuration of a network node permits an optical signal to be passed through the node and shifted from a first connector position to a second connector position that is offset from the first connector position. The shifted optical signal permits a number of distant nodes in the network to be reached with a direct optical connection, which can be configured to be bidirectional. The disclosed connectivity configuration reduces the cabling requirements for the network and simplifies the interconnections. | 12-29-2016 |
20160381442 | OPTICAL INTERCONNECT FOR SWITCH APPLICATIONS - A switch module includes a switch integrated circuit (IC), a silicon photonics chips, and a planar lightwave circuits (PLCs). | 12-29-2016 |
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20180027311 | COMPUTING DEVICE FOR HIGH SPEED OPTICAL DATA SWITCHING | 01-25-2018 |
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