Patent application number | Description | Published |
20110044589 | OPTICAL FERRULE - An optical ferrule butt-connected in an optical adapter, includes: a ferrule main body; a connection end face in a front surface of the main body; a pair of grooves on the connection end face of the main body; guide pin insertion holes in bottom surfaces of the respective grooves; optical fiber insertion holes in the connection end face, the holes being arranged in a line; and foreign material collecting portions at least at a pair of corresponding sides of the connection end face. The groove has a width larger than a diameter of the guide pin insertion hole. The foreign material collecting portions respectively have a wall for connecting the connection end face with a side surface of the ferrule main body to form a space for collecting a foreign material with an opposite connection end face of a corresponding optical ferrule and an inner wall of the optical adapter. | 02-24-2011 |
20110150399 | OPTICAL CONNECTOR WITH REFLECTOR - Disclosed is an optical connector which terminates an optical fiber inside the optical connector. The optical connector includes a main body. The main body includes: a reflector for reflecting light; a groove portion formed in a top surface of the main body; an optical fiber insertion hole opened in the groove portion, the optical fiber being inserted in the optical fiber insertion hole; an optical fiber placement stage provided in the groove portion, a front end portion of the optical fiber being placed on the optical fiber placement stage. The groove portion includes a side surface formed to face the optical fiber insertion hole. The optical fiber placement stage is formed by projecting from the side surface of the groove portion. | 06-23-2011 |
20110150400 | OPTICAL CONNECTOR WITH REFLECTOR - Disclosed is an optical connector which terminates an optical fiber inside the optical connector. The optical connector includes a main body. The main body includes: a reflector for reflecting light; a groove portion formed in a top surface of the main body; an optical fiber insertion hole opened in the groove portion, the optical fiber being inserted in the optical fiber insertion hole; an optical fiber placement stage provided in the groove portion, a front end portion of the optical fiber being placed on the optical fiber placement stage. The groove portion includes two side surfaces which face each other in the depth direction of the optical fiber insertion hole, and the optical fiber placement stage is separated away from the two side surfaces. | 06-23-2011 |
Patent application number | Description | Published |
20090116793 | OPTICAL CONNECTOR - An optical connector of a fitting pin positioning type includes multiple optical fiber insertion holes arranged in one row and fitting holes or fitting pins. The fitting holes or the fitting pins for positioning are respectively disposed on mutually opposite sides of a straight line connecting centers of the optical fiber insertion holes and are located point-symmetrically with respect to a center of the row of the entire optical fiber insertion holes arranged on the straight line. | 05-07-2009 |
20090196556 | OPTICAL TRANSCEIVER AND OPTICAL CONNECTOR - An optical transceiver | 08-06-2009 |
20090245737 | CONNECTOR HOLDER, OPTICAL-ELECTRICAL CONVERTER WITH ATTACHED CONNECTOR HOLDER, OPTICAL CONNECTOR FIXING STRUCTURE AND CONNECTOR HOLDER ASSEMBLY METHOD - A connector holder fixes an optical connector assembled at a leading end of an optical fiber to an optical module having a light input/output end so that the optical fiber and the light input/output end is optically connected. The connector holder is provided with a holding section for storing at least a part of the optical connector, and a cover section attached to the holding section to be freely opened and closed. The cover section is provided with a cover section main body, and a pressing section which presses the optical connector toward the optical module. | 10-01-2009 |
20090252455 | OPTICAL PATH CHANGING MEMBER - An optical path changing member is assembled at ends of optical fibers and placed to face a substrate including an optical input/output terminal having optical axes inclined with respect to optical axes of the ends. The optical path changing member is made of a transparent material and includes a member body having a reflection surface for optically connecting the ends to the optical input/output terminal. The member body has optical fiber insertion holes and an end placement portion to which the insertion holes are open and in which the end faces of the optical fibers are placed. The reflection surface is formed so that light entering from the end faces of the optical fibers into the member body will be internally reflected toward the optical input/output terminal in the member body. The end placement portion is filled with an adhesive by which the ends are fixed to the member body. | 10-08-2009 |
20090257718 | OPTICAL CONNECTOR HAVING OPTICAL FIBER - In an optical connector with optical fibers in which silica glass optical fibers with resin coating layers remaining attached are connected in optical fiber openings of a ferrule made from resin, at least a part of the resin coating layer of the optical fiber is glued to an inner face of the optical fiber opening, an outer diameter of the resin coating layer of the optical fiber is less than or equal to 125 μm, and the Young's modulus of the resin coating layer is less than the Young's modulus of the ferrule, and the Young's modulus of the resin coating layer is 1500 to 10000 MPa. | 10-15-2009 |
20110229092 | OPTICAL CONNECTOR - An optical connector, assembled to a front end of an optical fiber and attached to an optical component that is provided with an optical element having an optical axis different from that of the optical fiber, includes a main body having a connection end surface, and a reflective portion changing an angle of an optical path. At least one of a fitting protruding portion and a fitting recessed portion are provided so as to be capable of positioning the optical connector to the optical component by respectively fitting a fitted protruding portion and a fitted recessed portion provided on the optical component in each of a first region on the front end side and a second region on the opposite side thereto with the optical path interposed therebetween. | 09-22-2011 |
20120063729 | CONNECTOR HOLDER, OPTICAL-ELECTRICAL CONVERTER WITH ATTACHED CONNECTOR HOLDER, OPTICAL CONNECTOR FIXING STRUCTURE AND CONNECTOR HOLDER ASSEMBLY METHOD - A connector holder fixes an optical connector assembled at a leading end of an optical fiber to an optical module having a light input/output end so that the optical fiber and the light input/output end is optically connected. The connector holder is provided with a holding section for storing at least a part of the optical connector, and a cover section attached to the holding section to be freely opened and closed. The cover section is provided with a cover section main body, and a pressing section which presses the optical connector toward the optical module. | 03-15-2012 |
20120183269 | COVER FOR OPTICAL PATH CHANGING MEMBER - An optical path changing member is assembled at ends of optical fibers and placed to face a substrate including an optical input/output terminal having optical axes inclined with respect to optical axes of the ends. The optical path changing member is made of a transparent material and includes a member body having a reflection surface for optically connecting the ends to the optical input/output terminal. The member body has optical fiber insertion holes and an end placement portion to which the insertion holes are open and in which the end faces of the optical fibers are placed. The reflection surface is formed so that light entering from the end faces of the optical fibers into the member body will be internally reflected toward the optical input/output terminal in the member body. The end placement portion is filled with an adhesive by which the ends are fixed to the member body. | 07-19-2012 |
Patent application number | Description | Published |
20080285973 | Optical add/drop multiplexer - There is provided a shutdown controller that monitors the temperature of an optical multiplexer and maximizes the loss of an optical attenuator when a temperature monitor result is abnormal. An optical level change detection circuit section is disposed with respect to an optical level monitor of individual monitors in an optical add/drop multiplexer. An optical level monitor of a total main signal is disposed downstream of the optical multiplexer. The inconsistency of the wavelength number is detected by comparing the total of the optical level monitors of the individual channels with the optical level value of the optical level monitor, upon which shutdown control is performed in which the loss of the optical attenuator is maximized in only the channel whose optical level change is detected by the optical level change detection circuit section. | 11-20-2008 |
20110164873 | OPTICAL REPEATER, OPTICAL TRANSMISSION APPARATUS, REFLECTION ABNORMALITY DETECTION METHOD AND REFLECTION ABNORMALITY RECOVERY DETERMINATION METHOD - An output light intensity monitor unit of an optical repeater monitors an output light of an output point of the optical repeater. A reflected light intensity monitor unit monitors a reflected light returning from an optical fiber to the output point, An optical fiber transmission line loss from the apparatus output point to an optical fiber open end and a light intensity emitted from the open end are estimated from a monitored reflected light intensity, and a reflection abnormality detection threshold for detecting the reflection abnormality if the light intensity emitted from the open end exceeds a reference light intensity is prescribed. An output light intensity lowering amount and a reflection abnormality recovery threshold are prescribed from an output light intensity monitored at the apparatus output point and the reflected light intensity so that an open end output light intensity may be lowered to the reference light intensity. | 07-07-2011 |
20120219289 | OPTICAL TRANSPORT SYSTEM AND OPTICAL NODE - An embodiment of the invention is an optical node configured to transmit/receive a wavelength-division-multiplexed signal. An optical monitoring unit monitors power levels of the wavelength-division-multiplexed signal on a wavelength-by-wavelength basis to acquire wavelength-by-wavelength power level values of the optical signals. A comparison arithmetic unit performs a comparison between each of the acquired wavelength-by-wavelength power level values of the optical signals, and a predetermined upper limit value and a predetermined lower limit value. A target value calculation unit determines target values of power levels at wavelengths whose acquired power level values exceed the upper limit value to be values between a center value and the upper limit value, and determines target values of power levels at wavelengths whose acquired power level values fall below the lower limit value to be values between the center value and the lower limit value. | 08-30-2012 |
Patent application number | Description | Published |
20140369359 | COMMUNICATION DEVICE AND COMMUNICATION CONTROL METHOD - A communication device is included in an ad hoc network in a reactive routing scheme. The communication device includes a receiving unit, a selecting unit, and a transfer control unit. The receiving unit receives a route request frame including overall quality information on routes through which the route request frame has passed. The selecting unit selects a route request frame to be transferred to another communication device based on the quality information, from the route request frames received by the receiving unit through a plurality of routes. The transfer control unit transfers the route request frame selected by the selecting unit to the another communication device, and discards the route request frame when a quality value indicated by the quality information of the route request frame is smaller than a predetermined reference value. | 12-18-2014 |
20140376359 | DATA COMMUNICATION APPARATUS, DATA COMMUNICATION SYSTEM, AND DATA COMMUNICATION METHOD - A data communication apparatus forms a mesh network together with at least one gateway includes a frame generating unit and a frame transferring unit. The frame generating unit generates a meter data frame to transmit to a gateway. The meter data frame is a frame including meter data. The frame transferring unit transfers the meter data frame received from another data communication apparatus. The meter data frame is addressed to the gateway. The frame generating unit transmits the meter data frame to which number of alternate routing that indicates number of allowable transmission attempts from a data communication apparatus adjacent to a destination gateway of the meter data frame to the gateway is added. The frame transferring unit changes the number of alternate routing added thereto to a value smaller by 1 than a value that has been set and transits the meter data frame to another data communication apparatus. | 12-25-2014 |
20140376526 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device is provided in a wireless multi-hop network. The communication device includes a receiving unit, a transmission-offset calculating unit, and a transmitting unit. The receiving unit receives a sequence number, a divided time acquired by dividing a time width allocated for transmitting detected usage data by a division number, and the division number. The transmission-offset calculating unit calculates a remainder by dividing the sequence number received by the receiving unit by the division number and calculates a transmission offset time based on the remainder and the divided time. The transmitting unit transmits the usage data based on the transmission offset time calculated by the transmission-offset calculating unit. | 12-25-2014 |
20140380298 | WIRELESS COMMUNICATION TERMINAL, SOFTWARE UPDATE SYSTEM, AND SOFTWARE UPDATE METHOD - A software update system includes an administration server, a wireless communication terminal, and a wireless-communication key station. The wireless communication terminal is configured to be connected to the administration server through a communication network. The a wireless-communication key station is configured to be positioned between the administration server and the wireless communication terminal, and to perform processing of distributing software of an update object transmitted from the administration server to the wireless communication terminal. | 12-25-2014 |