| Patent application number | Description | Published |
|---|
| 20080232757 | Assemblies and Methods for Drop Cable - Assemblies and methods for installing and maintaining aerial fiber optic cable are provided. Embodiments include a cable long enough to extend from two elevated support points and to provide enough slack for at least a portion of the cable to extend along the ground. The cable includes a wrapped portion for storing the slack and to elevate the entire cable above the ground. The wrapped portion being releasable in response to a force acting on the cable, such as a falling tree, allowing for at least a portion of the cable to fall to the ground and minimize the likelihood of the tree snapping the cable. Fasteners and frame members may be employed to support the wrapped portion. An embodiment may also include a cut-off apparatus for cutting the cable in response to the cable being pulled further once any slack in the cable has been expended. | 09-25-2008 |
| 20080232760 | SYSTEM AND METHOD FOR DETERMINING FIBER CHARACTERISTICS - A system is provided for characterizing optical fibers carrying signal traffic. The system includes a transmitter, a variable optical attenuator (VOA), a receiver, and a computing device. The transmitter propagates an optical test signal along a channel of a fiber pathway. The VOA adjusts the attenuation of the optical test signal from an initial, greater attenuation to a subsequent, lesser attenuation. At the same time, the computing device monitors at least one other channel of the fiber pathway and identifies effects upon the other channel(s) from the optical test signal. The computing device may communicate with the VOA and with other components of the fiber pathway to direct adjustment of the signal strength. A maximum optical test signal strength may thus be achieved that does not negatively affect signal traffic on the other channels, and the fiber pathway may subsequently be tested using the achieved maximum optical test signal strength. | 09-25-2008 |
| 20080239295 | OPTICAL POWER MONITORING WITH ROBOTICALLY MOVED MACRO-BENDING - A method may include bending a first optical fiber of a plurality of optical fibers; measuring light leaked from the first optical fiber with a photo detector; robotically moving the photo detector to a second optical fiber of the plurality of optical fibers; bending the second optical fiber; and measuring light leaked from the second other optical fiber with the photo detector. | 10-02-2008 |
| 20080298802 | OPTICAL SIGNAL MEASUREMENT DEVICE - A device connects to a male network connector of a network conduit, and connects to a female network connector of the network conduit. The female network connector is capable of communicating with the male network connector. The device also measures outputs of the male network connector and the female network connector. | 12-04-2008 |
| 20090073424 | FIBER RACK ASSEMBLY AND ASSOCIATED TESTING SYSTEM - A fiber rack assembly is provided. The assembly includes at least one patch panel having adapters configured to couple a first plurality of fibers to a second plurality of fibers and a test system for measuring the optical power lever of the fibers. The test system may include a base and a sensor. The base may define a plurality of test sites. Each test site is configured to support a portion of a fiber. The sensor is movable to one or more test sites and, at each test site, is configured to measure a macro-bending loss at the portion of the fiber supported at the test site as an indication of an optical power level of the fiber. The test system may also have interface panel that includes user inputs and a display. | 03-19-2009 |
| 20090080900 | ENVIRONMENTALLY STABLE COMPONENT ASSEMBLY - Component assemblies and methods of making component assemblies are disclosed. An exemplary component assembly may generally include a capsule defining a cavity for receiving a component. The component assembly may additionally include at least one lead extending from the component and through the capsule to allow communication between the component and a network or device. The lead may generally define a sealed length within the capsule that is at least as great as a predetermined or expected intrusion distance of an external contaminant along the sealed length over an expected lifetime or service interval associated with the component encapsulated in the cavity. | 03-26-2009 |
| 20090109425 | SYSTEM AND METHOD FOR DETERMINING FIBER CHARACTERISTICS - A system is provided for characterizing optical fibers carrying signal traffic. The system includes a transmitter, a variable optical attenuator (VOA), a receiver, and a computing device. The transmitter propagates an optical test signal along a channel of a fiber pathway. The VOA adjusts the attenuation of the optical test signal from an initial, greater attenuation to a subsequent, lesser attenuation. At the same time, the computing device monitors at least one other channel of the fiber pathway and identifies effects upon the other channel(s) from the optical test signal. The computing device may communicate with the VOA and with other components of the fiber pathway to direct adjustment of the signal strength. A maximum optical test signal strength may thus be achieved that does not negatively affect signal traffic on the other channels, and the fiber pathway may subsequently be tested using the achieved maximum optical test signal strength. | 04-30-2009 |
| 20090154938 | IN-CHANNEL RESIDUAL CHROMATIC DISPERSION MEASUREMENT - A system generates optical pulses, that include two frequencies within one optical channel, at a first end of an optical link, and receives the optical pulses at a second end of the optical link. The system also sets a frequency difference for the two frequencies of the optical pulses, calculates a relative group delay difference for the two frequencies of the optical pulses, and calculates a residual chromatic dispersion of the channel based on the frequency difference and the calculated relative group delay difference. | 06-18-2009 |
| 20090162052 | LATENCY MEASUREMENT IN OPTICAL NETWORKS - A device for measuring optical latency in a test path includes an optical source to generate an optical signal. An optical modulator modulates the optical signal based on a modulation signal. An output port outputs the modulated optical signal to the test path. An input port receives a return optical signal following propagation through the test path. Latency calculating logic calculates the optical latency for the test path based on the modulation signal and the return optical signal. | 06-25-2009 |
| 20090244524 | OPTICAL POWER MONITORING WITH ROBOTICALLY MOVED MACRO-BENDING - A method may include bending a first optical fiber of a plurality of optical fibers; measuring light leaked from the first optical fiber with a photo detector; robotically moving the photo detector to a second optical fiber of the plurality of optical fibers; bending the second optical fiber; and measuring light leaked from the second other optical fiber with the photo detector. | 10-01-2009 |
| 20090279887 | Systems and Methods For Wavelength Scanning Of In-Service Wavelength Division Multiplexing Systems - A testing input module for testing an in-service WDM system is provided. The testing input module includes a first light source configured to emit a first light signal to one or more empty channels of the in-service WDM system; and a tunable second light source configured to emit a second light signal to test the one or more empty channels. The testing input module also includes a first switch module configured to: receive from the first light source and output the first light signal during a first time interval; and receive from the second light source and output the second light signal during a second time interval. The second time interval is a duration wherein a channel power monitoring function of the in-service WDM system is not triggered. | 11-12-2009 |
| 20090324179 | SYSTEM AND METHOD FOR PROVIDING LARGE SCALE, AUTOMATED, FIBER-OPTIC, CROSS-CONNECTION - A system and method for automatically inserting optical-fiber (fiber-optics) cable jumpers into a patch panel to connect optical signal source equipment to optical signal destination equipment, and for automatically removing those jumpers from that patch panel to disconnect that equipment. This is accomplished robotically under computer control. Large scale fiber-optical splicings can be made, on the order of ten thousand (10,000) separate optical splices or more. Previous embodiments required hand insertion of these jumpers. Embodiments of the present invention permit any un-occupied port to be connected to any other un-occupied port, regardless of their input or output port status, where previous embodiments required only unoccupied input ports to be connected to unoccupied output ports. | 12-31-2009 |
| 20100119224 | ENHANCED POLARIZATION MODE DISPERSION OF OPTICAL CHANNELS - A device receives, from an optical receiver, performance information associated with an optical channel generated by an optical transmitter, and determines, based on the received performance information, a wavelength that minimizes polarization mode dispersion (PMD) associated with the optical channel. The device also provides, to the optical transmitter, a request to adjust an optical channel wavelength to the determined wavelength. | 05-13-2010 |
| 20100150547 | FAULT LOCATOR FOR LONG HAUL TRANSMISSION SYSTEM - A system and methods include generating an optical time domain reflectrometry signal; transmitting the optical time domain reflectrometry signal on a first fiber path in a first direction through at least one optical amplifier; receiving a reflection of the optical time domain reflectrometry signal on the first fiber path in a second direction opposite the first direction; transmitting the reflected optical time domain reflectrometry signal on a second fiber path in the second direction, where the second fiber path is not the first fiber path; and determining a location of a fault on the first fiber path based on the reflected optical time domain reflectrometry signal. | 06-17-2010 |
| 20100253936 | MEASUREMENT OF NONLINEAR EFFECTS OF AN OPTICAL PATH - A network device may include a receiver to receive optical pulses from an optical path, wherein the optical pulses include a plurality of intensities and represent data. The network device may also include a processor to determine a rate of bit errors introduced during propagation of the optical pulses through the optical path and to determine a parameter indicative of nonlinear effects of the optical path based on the rate of bit errors and the plurality of intensities. | 10-07-2010 |
| 20100266275 | Optical Network Testing - A method includes generating a test signal and modulating the test signal. The method may also include transmitting the test signal on an optical path, where the optical path may include a number of add-drop multiplexer devices and amplifiers. The method may also include receiving the test signal at a destination device and converting the received test signal into an electrical signal. The method may further include identifying a portion of the electrical signal that is associated with the modulated test signal. | 10-21-2010 |
| 20100322620 | Self-Healing Repeater Node - A device may include a component, a first switch, a repeater, and a second switch. The component may configure optical paths between ports. The component may comprise a first pair of optical ports connected to a first pair of optical fibers, and a second pair of optical ports connected to a second pair of optical fibers. The first switch may be configured to output one of two optical signals received by the first pair of optical ports from the first pair of optical fibers. The repeater may reshape or amplify the outputted optical signal. The second switch may be configured to direct the reshaped or amplified signal to one of the second pair of optical ports. | 12-23-2010 |
| 20110043793 | OPTICAL SIGNAL MEASUREMENT DEVICES - A device includes a female connector to receive a male network connector of a network conduit, and a first male connector optically communicating with the female connector, where the first male connector includes a first indicator that identifies a first wavelength optical signal. The device also includes a second male connector optically communicating with the female connector, where the second male connector includes a second indicator that identifies a second wavelength optical signal. The device further includes a wavelength splitter to receive an optical signal from the network conduit via the female connector, provide the optical signal to the first male connector when the optical signal corresponds to the first wavelength optical signal, and provide the optical signal to the second male connector when the optical signal corresponds to the second wavelength optical signal. | 02-24-2011 |
| 20110069748 | Measuring Bit-Error-Rates of Forward Error Correction Code Encoded Signals - A device may include one or more components and a processor. The one or more components may obtain bit-error-rates of a signal and signal-to-noise ratios of the signal. The processor may select a target signal-to-noise ratio for the signal, determine a target noise level based on the target signal-to-noise ratio, set a noise level of the signal to the target noise level, determine a signal-to-noise ratio of the signal via the one or more components, adjust the noise level of the signal based on the determined signal-to-noise ratio, to stabilize the signal-to-noise ratio, determine a bit-error-rate of the signal via the one or more components, and record the bit-error-rate. | 03-24-2011 |
| 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 |
| 20110116786 | HOT-SWAPPING IN-LINE OPTICAL AMPLIFIERS IN AN OPTICAL NETWORK - An amplifier node, in an optical network, includes a first switch connected to a working path from which network traffic is received; a second switch connected to the working path to which the network traffic is transmitted; and two amplifiers that interconnect the first switch and the second switch, where the network traffic travels from the first switch to the second switch via a first amplifier. The amplifier node also includes a controller to receive an instruction to switch the network traffic from the first amplifier to a second amplifier that enables the first amplifier to be repaired; send, to the first switch and the second switch, another instruction to switch the network traffic from the first amplifier to the second amplifier; receive an indication that the network traffic is traveling via the second amplifier; and send a notification that the first amplifier can be repaired based on the indication. | 05-19-2011 |
| 20110116789 | MAINTENANCE FRIENDLY OPTICAL FIBER SWITCHING SYSTEM - First and second switching device are connected by a number of signal paths. The first switching device receives an instruction to switch from a first one of the signal paths to a second one of the signal paths. The first switching device performs, in response to the received instruction, a first switching operation to connect the first path, at an input of the first switching device, to the second path, at an output of the first switching device. The second switching device receives the instruction to switch from the first path to the second path and detects a loss of signal on the first path as a result of the first switching operation performed by the first switching device. The second device performs, in response to detecting the loss of signal on the first path, a second switching operation to connect the first path, at an output of the second switching device, to the second path, at an input of the second switching device. | 05-19-2011 |
| 20110116805 | FREE SPACE OPTICS BROADBAND HOME NETWORK - A system comprises a transmitter including a laser configured to generate a laser beam directed at a spot on a surface, and a laser driver connected to the laser and configured to modulate input data onto the laser beam. The system may further comprise a receiver including an optical detector configured to decode received light into raw data, a signal processor configured to decode the raw data into the original input data, and telescope optics configured to receive light reflected from the spot on the surface, collimate the light and converge the light onto the optical detector. | 05-19-2011 |
| 20110123190 | Connection Loss Scheme for Fiber Connections in Optical Communication System - A method includes outputting an optical signal from an optical transmitter; causing the optical signal to propagate through equipment of an optical communication site and to loop back to an optical receiver; measuring optical powers, respectively, based on taps proximate to the optical transmitter and the optical receiver; calculating an optical power loss based on the optical powers measured; determining whether the optical power loss is an acceptable value; and indicating when the optical power loss is not the acceptable value. | 05-26-2011 |
| 20110142440 | MEASUREMENT OF POLARIZATION MODE DISPERSION OR DIFFERENTIAL GROUP DELAY OF AN OPTICAL PATH - A method may include generating first and second optical signals and modulating the first and second optical signals simultaneously to synchronize the signals. The method may include varying the polarization of the second optical signal and transmitting the first and second optical signals. The method may include receiving the first and second optical signals, wherein the signals traveled along a same optical path. The method may include determining a plurality of differential travel delays between the first and second optical signals over a period of varying polarizations and determining a differential group delay based on the maximum and the minimum differential travel delays. | 06-16-2011 |
| 20110142441 | OPTICAL FIBER CONNECTOR AND NETWORK DEVICE CONFIGURATION - A fiber-optic coupler may include a first optical fiber including an end portion to send or receive optical signals to or from an end portion of a second optical fiber. The coupler may also include a micro-electromechanical systems (MEMS) structure to align the end portion of the first optical fiber with the end portion of the second optical fiber. | 06-16-2011 |
| 20110205533 | OPTICAL SIGNAL MEASUREMENT DEVICE - A device connects to a male network connector of a network conduit, and connects to a female network connector of the network conduit. The female network connector is capable of communicating with the male network connector. The device also measures outputs of the male network connector and the female network connector. | 08-25-2011 |
| 20110229136 | LONG REACH OPTICAL NETWORK - An optical network includes a first optical network for carrying a plurality of optical channels in an optical fiber, wherein each of the plurality of optical channels comprise a discrete wavelength in a first range of wavelengths. A second optical network coupled to the first optical network by a first tunable filter. A first customer location coupled to the second optical network by a second tunable filter. The first tunable filter is configured to pass a first set of optical channels from the first optical network to the second optical network. The first set of optical channels includes a subset of the plurality optical channels within a second range of wavelengths less than the first range of wavelengths. The second tunable filter is configured to pass a particular channel within the first set of optical channels from the second optical network to the first customer location. | 09-22-2011 |
| 20110268437 | BIT ERROR GENERATION SYSTEM FOR OPTICAL NETWORKS - A system may include an optical bit error generator comprising a high instantaneous power light source. An optical coupler may couple an output of the optical bit error generator to a traffic fiber. A device under test receives a traffic signal via the traffic fiber. A performance monitor is coupled to the device under test to determine responsiveness of the device under test to a bit error condition simulated by the optical bit error generator, wherein the high instantaneous power light source in the optical bit error generator is configured based on a protocol of a traffic signal in the traffic fiber and the bit error condition. | 11-03-2011 |
| 20110280570 | COMPENSATING FOR END-TO-END GROUP DELAY RIPPLES - A device may include a group delay monitor and a signal receiver. The group delay monitor may be configured to obtain group delay data corresponding to group delay of an optical signal and provide the group delay data to a signal receiver. The signal receiver configured to obtain a time-domain digital signal corresponding to the optical signal, convert the time-domain digital signal into a frequency-domain signal, apply a digital filter constructed based on the group delay data to the frequency-domain signal to obtain an output signal, and transmit the output signal. | 11-17-2011 |
| 20110317996 | SYSTEMS, DEVICES, AND METHODS FOR EVALUATING A LINK STATUS OF A FIBER-OPTIC COMMUNICATION SYSTEM - Exemplary systems, devices, and methods for evaluating a link status of a fiber-optic communication system are disclosed. An exemplary transceiver device includes a transmitter configured to transmit an optical signal having a first wavelength to an additional transceiver device by way of a single optical fiber, a receiver configured to receive an optical signal having a second wavelength from the additional transceiver device by way of the single optical fiber, and a link status facility communicatively coupled to the transmitter and the receiver and configured to provide one or more visual indications of a link status between the transceiver device and the additional transceiver device. Corresponding systems, devices, and methods are also disclosed. | 12-29-2011 |
| 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 |
| 20120082469 | AUTOMATIC WAVELENGTH CONFIGURATION - An optical transmitter may include a tunable signal source configured to emit a signal to an optical fiber system; a back scatter detector for measuring an amount of back scatter observed following injection of the signal to the optical fiber system; and control logic. The control logic may be configured to cause the tunable signal source to scan through a range of wavelengths. Measured amounts of back scatter are received for each of the wavelengths. A wavelength corresponding to a peak back scatter amount may be identified and the tunable signal source may be set based on the identified wavelength. | 04-05-2012 |
| 20120121250 | MEASURING DIFFERENTIAL GROUP DELAY IN AN OPTICAL FIBER - A system includes an optical transmitter configured to generate an optical signal that includes a scrambled polarization state; and output the optical signal via an optical fiber associated with a network path that is transporting network traffic. The system also includes an optical receiver configured to receive the optical signal; measure a polarization associated with the optical signal; determine, based on the polarization, a degree of polarization associated with the test signal; identify a differential group delay associated with the test signal based on the degree of polarization; output a notification that the optical fiber is available to carry high capacity traffic when the differential group delay is less than a threshold, where the high capacity traffic includes a data rate that his greater than another threshold; and output a notification that the optical fiber is not available to carry the high capacity traffic when the differential group delay is not less than the threshold. | 05-17-2012 |
| 20120163804 | APPARATUS AND METHOD FOR EFFICIENT OPTICAL LOSS MEASUREMENT - A measurement system that includes a power source and a power meter, said power source is configured to generate both a measurement signal and a power source communication signal, and said power meter is in communication with said power source and configured to receive both said measurement signal and said power source communication signal | 06-28-2012 |
| 20120195428 | QUANTUM KEY DISTRIBUTION SYSTEM - A method is provided for distributing quantum cryptographic keys. The method includes receiving, from an initial quantum key generating transmitter, a first signal via a single combined channel that includes a first quantum signal and a public data signal alternating in a time shared manner. The first signal is split into a first split signal and a second split signal. A low attenuation is applied to the first split signal when the first split signal includes the first quantum signal. A high attenuation is applied to the first split signal when the second split signal includes the public data signal. The first split signal is received at an intermediate quantum key generating receiver when the low attenuation is applied. The initial quantum key generating transmitter is corresponded with to generate a first quantum key. A second quantum signal is transmitted to a recipient quantum key generating receiver. The recipient quantum key generating receiver is corresponded with to generate a second quantum key. The first quantum key is encoded using the second quantum key. The encoded first quantum key is transmitted to the recipient quantum key generating receiver. | 08-02-2012 |
| 20120219299 | METHOD AND SYSTEM FOR OPTICAL COMMUNICATION - An optical transmission system is described. The transmission system comprises a plurality of modules that include signal repeaters at each end. Within each module, optical signals are propagated between the repeaters through free space. Adjacent modules are connected by optical fibers to enable optical transmission therebetween. Adjacent modules are mechanically coupled with a flexible joint. | 08-30-2012 |
| 20120237215 | TERRESTRIAL OPTICAL FIBER COMMUNICATION WITH ADDED CAPACITY - An optical communication system comprising an optical fiber connected to a first signal regeneration node located at a first end of the optical fiber and a second signal regeneration node located at a second end of the optical fiber; intermediary nodes located between the first and second signal regeneration nodes, wherein one or more pairs of adjacent intermediary nodes each define a span distance along the optical fiber; and one or more Raman amplifiers located within each span distance along the optical fiber, wherein at least one of the one or more Raman amplifiers comprises a case that encases one or more lasers and a temperature controller comprising a temperature sensor to monitor a temperature of the one or more lasers; and a temperature regulator to control a temperature of the one or more lasers. | 09-20-2012 |
| 20120263473 | NETWORK WITH SOURCELESS CLIENTS - A first node receives a first phase modulated optical signal at a first wavelength from a master node. The first node also transmits a first amplitude modulated optical signal to the master node at the first wavelength using a portion of the first phase modulated optical signal as a light source. | 10-18-2012 |
| 20120280916 | Methods and Systems for Facilitating Data Entry by Way of a Touch Screen - An exemplary method includes 1) detecting an initialization action performed by a first extremity of a user and a second extremity of the user, the initialization action comprising a touching of a first arbitrary location on the touch screen by the first extremity and a touching of a second arbitrary location on the touch screen by the second extremity, 2) designating, in response to the initialization action, the first arbitrary location as a first reference position and the second arbitrary location as a second reference position, 3) detecting one or more tapping actions performed on the touch screen, 4) determining a relative position on the touch screen of each of the one or more tapping actions with respect to the first and second reference positions, and 5) identifying one or more data entry commands associated with the one or more tapping actions. Corresponding methods and systems are also disclosed. | 11-08-2012 |
| 20120281979 | OPTICAL NETWORK WITH LIGHT-PATH AGGREGATION - A method comprising identifying a data demand of an optical channel request; identifying available resources for satisfying the optical channel request; selecting light paths to a destination based on the identified available resources, wherein each light path is distinct; selecting one or more optical carriers for each light path; optically transmitting data pertaining to the optical channel request based on the selected light paths, wherein each selected optical carrier of each light path carries a portion of the data and a total of the one or more optical carriers associated with the light paths collectively carry an entire portion of the data; receiving the one or more optical carriers of the light paths at the destination; identifying a latency between the one or more optical carriers of the light paths; adjusting the latency between the one or more optical carriers of the light paths; and assembling the data. | 11-08-2012 |
| 20120321296 | LIGHT PATH CHARACTERIZATION, TRAFFIC PROTECTION, AND WAVELENGTH DEFRAGMENTATION - A method for managing an optical network having a plurality of nodes interconnected by a plurality of fiber links includes installing one or more active reconfigurable optical add/drop multiplexer (ROADM) cards into a node and installing a spare ROADM card into the node. The one or more active ROADM cards are configured to pass optical traffic to and from the optical network. The installed spare ROADM card is remotely activated to pass optical traffic to and from the optical network, subsequent to configuring the one or more active ROADM cards, based on one of: an event or expiration of a time period. | 12-20-2012 |
| 20120321306 | OPTICAL TRANSPORT HAVING FULL AND FLEXIBLE BANDWIDTH AND CHANNEL UTLIZATION - Optical nodes in an optical network may provide directionless, colorless, contentionless, and gridless transmission, reception, and switching of optical signals in which a non-fixed number of optical channels and a non-fixed bandwidth for each optical channel is used. Optical nodes can use the full extent of the optical bandwidth due to the absence of channel spacing. | 12-20-2012 |
| 20130057854 | OPTICAL SIGNAL MEASUREMENT DEVICES - A device includes a female connector to receive a male network connector of a network conduit, and a first male connector optically communicating with the female connector, where the first male connector includes a first indicator that identifies a first wavelength optical signal. The device also includes a second male connector optically communicating with the female connector, where the second male connector includes a second indicator that identifies a second wavelength optical signal. The device further includes a wavelength splitter to receive an optical signal from the network conduit via the female connector, provide the optical signal to the first male connector when the optical signal corresponds to the first wavelength optical signal, and provide the optical signal to the second male connector when the optical signal corresponds to the second wavelength optical signal. | 03-07-2013 |
| 20130129005 | METHOD AND SYSTEM FOR LOW LATENCY RADIO FREQUENCY WAVE TRANSMISSION - An approach is provided for low latency radio frequency wave transmission. A long haul transport network receives a first signal representing latency sensitive data, receives a second signal representing latency insensitive data, and combines the first signal and the second signal to output a combined radio frequency signal, wherein the latency sensitive data of the combined radio frequency signal are at a first level of error coding, and the latency insensitive data of the combined radio frequency signal are at a second level of error coding. | 05-23-2013 |
| 20130202311 | FREE SPACE OPTICS BROADBAND HOME NETWORK - A system comprises a transmitter including a laser configured to generate a laser beam directed at a spot on a surface, and a laser driver connected to the laser and configured to modulate input data onto the laser beam. The system may further comprise a receiver including an optical detector configured to decode received light into raw data, a signal processor configured to decode the raw data into the original input data, and telescope optics configured to receive light reflected from the spot on the surface, collimate the light and converge the light onto the optical detector. | 08-08-2013 |
| 20130230310 | Self-Healing Repeater Node - A device may include a component, a first switch, a repeater, and a second switch. The component may configure optical paths between ports. The component may comprise a first pair of optical ports connected to a first pair of optical fibers, and a second pair of optical ports connected to a second pair of optical fibers. The first switch may be configured to output one of two optical signals received by the first pair of optical ports from the first pair of optical fibers. The repeater may reshape or amplify the outputted optical signal. The second switch may be configured to direct the reshaped or amplified signal to one of the second pair of optical ports. | 09-05-2013 |
| 20130294769 | BIT ERROR GENERATION SYSTEM FOR OPTICAL NETWORKS - A bit error generating device includes a light source, an input device, and a control processor. The control processor includes logic configured to: receive protocol or bitrate information regarding a live traffic signal via the input device; determine bit error simulation signal parameters based on the received protocol or bitrate information; configure the light source to generate the bit error simulation signal based on the bit error simulation signal parameters; and instruct the light source to inject the bit error simulation signal into an optical fiber carrying the live traffic signal. | 11-07-2013 |
| 20130315579 | METHOD AND SYSTEM FOR PROVIDING A SHARED DEMARCATION POINT TO MONITOR NETWORK PERFORMANCE - An approach for detecting an error associated with a routing network coupled to a transport network comprising a plurality of optical communication nodes, switching, by an optical communication node, to a troubleshooting channel associated with the transport network using one or more router counterpart cards, and troubleshooting the error using the one or more router counterpart cards. | 11-28-2013 |
| 20130322868 | METHOD AND APPARATUS FOR A RECONFIGURABLE OPTICAL ADD/DROP MODULE WITH LOOP-BACK FUNCTIONS - A method and apparatus for approaches for troubleshooting optical networks, particularly ROADM-based networks is described. The method includes designating a first port, of an optical communication node of a transport network, as an ingress for a loop-back optical signal to troubleshoot the transport network, designating a second port, of the optical communication node, as an egress for the loop-back optical signal, and establishing a loop-back connection between the first port and the second port to transport the loop-back optical signal. | 12-05-2013 |
| 20130330072 | REDUCING COHERENT NOISE IN SINGLE FIBER TRANSCEIVERS - A method includes monitoring, by a transceiver, a first wavelength corresponding to a transmitted optical signal. The method includes monitoring a second wavelength corresponding to a received optical signal. The method also includes determining whether the first wavelength is identifiably different than the second wavelength. The method includes maintaining a separation between the first and second wavelengths if the first and second wavelengths are identifiably different. The first and second wavelengths are separated if the first and second wavelengths are not identifiably different. The method further includes maintaining the separation between the first and second wavelengths following separation of the first and second wavelengths. | 12-12-2013 |
| 20130336658 | SPECTRUM EFFICIENT OPTICAL TRANSPORT SYSTEM WITH SUPERCHANNELS - A method, performed by a computer device, may include determining that an available spectrum, associated with an optically switched light path, has been allocated for one or more superchannels and identifying a leftover spectrum, associated with the one or more superchannels allocated for the optically switched light path. The method may further include selecting a use for the leftover spectrum; selecting one or more devices to configure based on the selected use; configuring the selected one or more devices to use the leftover spectrum; and sending data via the leftover spectrum using the configured one or more devices. | 12-19-2013 |
| 20140029934 | DISTINGUISHING LIGHT IN SINGLE FIBER TRANSCEIVERS - An optical transceiver may include logic configured to incorporate a first identifier into a first optical signal and transmit the first optical signal on an optical link. The logic may be further configured to receive a second optical signal via the optical link; retrieve a second identifier from the received second optical signal; determine whether the first identifier matches the second identifier; and report that the optical link is associated with a faulty connection, when the first identifier matches the second identifier. | 01-30-2014 |
| 20140029948 | MULTI-BAND RECONFIGURABLE OPTICAL ADD-DROP MULTIPLEXER (ROADM) SYSTEM - A device includes a first band coupler, a first reconfigurable optical add-drop multiplexer (ROADM), a second ROADM, and a second band coupler. The first band coupler is configured to decouple a regular band and an extended band. The first ROADM is configured to add or drop one or more frequencies in the decoupled regular band to produce a first output in the regular band. The second ROADM is configured to add or drop one or more frequencies in the decoupled extended band to produce a second output in the extended band. The second band coupler is configured to couple the first output and the second output to produce a third output occupying the regular band and the extended band. | 01-30-2014 |
| 20140049931 | ACTIVE BACKPLANE DESIGNS - A backplane device may include an electrical bus, an optical fabric, and a plurality of card sockets. A particular one of the plurality of card sockets may include a first socket configured to receive a first electrical connector of a card and electrically connect the first electrical connector to the electrical bus; and a conversion device comprising a second socket configured to receive a second electrical connector of the card; and an optical transceiver configured to convert electrical signals received from the second electrical connector to optical signals and provide the optical signals to the optical fabric; and convert optical signals received from the optical fabric to electrical signals and provide the electrical signals to the second electrical connector. | 02-20-2014 |
| 20140071057 | METHOD AND SYSTEM OF LEARNING DRAWING GRAPHIC FIGURES AND APPLICATIONS OF GAMES - The present disclosure provides a method that includes displaying a first graphic figure for a period of time to a person; receiving a second graphic figure by a touch screen of a first electronic device, wherein the second graphic figure is drawn on the touch screen by the person based on the first graphic figure after the first graphic figure disappears; comparing the first and second graphic figures to determine a difference between the first and second graphic figures; and showing a result associated with the difference by the first electronic device. | 03-13-2014 |
| 20140219658 | POLARIZATION MULTIPLEXED SHORT DISTANCE CONNECTION - A network device may include a polarizing multiplexing transmitter, a polarization maintaining (PM) fiber, and a polarizing demultiplexing receiver. The polarizing multiplexing transmitter may generate an optical signal, split the optical signal into a first and a second split optical signal, and modulate the split optical signals based on electrical signals to form first and second modulated optical signals. The polarizing multiplexing transmitter may polarization multiplex the first and second modulated optical signals to form a polarization multiplexed signal and transmit the polarization multiplexed signal via the PM fiber to the polarizing demultiplexing receiver. The polarizing demultiplexing receiver may polarization demultiplex the polarization multiplexed signal to form the first and second modulated optical signals and directly detect the first and the second split optical signal from the first and second modulated optical signals. The polarizing demultiplexing receiver may convert the first and the second split optical signal to the electrical signals. | 08-07-2014 |
| 20140241721 | OPTICAL BURST SWITCHED NETWORK NODES - An optical node includes a wavelength splitter configured to split optical signals comprising multiple optical wavelengths into separate outputs, with each of the separate outputs having a different wavelength. The optical node further includes a detector configured to detect optical signals associated with packets at each of the separate outputs, and determine a modulation applied to the optical signals at each of the separate outputs. The optical node also includes a processing unit configured to identify destination optical nodes for the packets based on the determined modulation. | 08-28-2014 |
| 20150022803 | FIBER SIGNAL LOSS EVENT IDENTIFICATION - A system includes a wavelength tunable laser to provide a first optical pulse of a first wavelength and a second optical pulse of a second wavelength to an optical fiber, a reflection detector to determine a first fiber attenuation curve from the first reflected pulse and a second fiber attenuation curve from the second reflected pulse, and a discontinuous loss event analyzer to identify a discontinuous loss event at a discontinuous loss point in at least one of the first fiber attenuation curve and the second first fiber attenuation curve, determine a return loss slope based on a return loss at the discontinuous loss point for the first fiber attenuation curve and a return loss at the discontinuous loss point for the second first fiber attenuation curve, and determine whether the discontinuous loss event is a bad fiber bending event based on the return loss slope. | 01-22-2015 |
| 20150055945 | PROTECTION IN METRO OPTICAL NETWORKS - An optical network is configured to optimize network resources. The optical network includes multiple optical nodes, light paths between the multiple optical nodes, and a network monitoring device. The network monitoring device monitors the optical network to identify a failure in the optical network. When the failure is a fiber failure, light paths are re-routed around the fiber failure while maintaining the required bandwidth for the optical network. When the failure is a transponder card failure within one of the multiple nodes, a floating spare card may be provisioned to service a particular light path associated with the transponder card failure. When the failure is a node failure, transponder cards in some of the multiple optical nodes are provisioned to reconfigure some of the plurality of light paths to route traffic around the failed node. | 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 |
| 20150063808 | IDENTIFYING DATA STREAMS IN POLARIZATION MULTIPLEXED TRANSMISSION - A polarization multiplexed receiver includes a polarization separator and optical mixing, detecting and analog-to-digital components. The polarization separator receives polarization multiplexed optical signals containing a first data stream and a second data stream, and operate upon the polarization multiplexed optical signals to separate, in an optical domain, the first data stream and the second data stream to generate a first optical output having the first data stream and a second optical output having the second data stream. The optical mixing, detecting and analog-to-digital converting components receive the first and second optical outputs from the polarization separator, extract, in a digital domain, the first data stream from the first optical output of the polarization separator, and extract, in the digital domain, the second data stream from the second optical output of the polarization separator. | 03-05-2015 |
