http://www.freshpatents.com/Optical-communications-dtnewntc398.php USPTO Class 398 - Optical communications en-us Mon, 30 Jan 2012 13:31:49 -0800 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/-dt20120126ptan20120020658.php Mon, 30 Jan 2012 13:31:49 -0800 An optical device includes a light source, a controller that supplies control information to the light source and controls an output level of the light source, a monitor that outputs an operation state of the optical output as a monitor output, and an auxiliary controller that records the monitor output... http://www.freshpatents.com/-dt20120126ptan20120020659.php Mon, 30 Jan 2012 13:31:49 -0800 Systems and techniques for optical communications based on polarization division multiplexing are described.... http://www.freshpatents.com/-dt20120126ptan20120020660.php Mon, 30 Jan 2012 13:31:49 -0800 A method is provided for detecting the skew between parallel light signals generated from a serial data stream. The method can be used with polarization multiplexed signal, as well as with wavelength division multiplexed signals, spatial division multiplexed signals, phase modulated signals, or intensity modulated signals. The method can be... http://www.freshpatents.com/-dt20120126ptan20120020661.php Mon, 30 Jan 2012 13:31:49 -0800 An optical communication device comprises a variable dispersion compensator, a photoelectric converter, and a processor. The variable dispersion compensator compensates an amount of wavelength dispersion of an optical signal received from an optical transmission line. The photoelectric converter converts the compensated optical signal into an electrical signal. The processor is... http://www.freshpatents.com/-dt20120126ptan20120020662.php Mon, 30 Jan 2012 13:31:49 -0800 The embodiments of the present invention relate to communications technology, and disclose an optical power measurement method, an Optical Line Terminal (OLT), and an Optical Network Unit (ONU). The method includes: generating a Physical Layer Operation Administration Maintenance (PLOAM) message that includes an identifier of at least one ONU to... http://www.freshpatents.com/-dt20120126ptan20120020663.php Mon, 30 Jan 2012 13:31:49 -0800 Various embodiments of the present invention are directed to arrangements of multiple optical buses to create scalable optical interconnect fabrics for computer systems. In one aspect, a multi-bus fabric (102) for transmitting optical signals between a plurality of nodes (108-111) comprises a plurality of optical buses (104-107). Each optical bus... http://www.freshpatents.com/-dt20120126ptan20120020664.php Mon, 30 Jan 2012 13:31:49 -0800 A wavelength selective light cross connect device 1A is configured of a route selector 10A including route selection elements 11-1 to 11-N, wavelength selector 20A, route selector 40A including route selection elements 41-1 to 41-M and controller 50A. The route selection elements 11-1 to 11-N select routes for WDM signals... http://www.freshpatents.com/-dt20120126ptan20120020665.php Mon, 30 Jan 2012 13:31:49 -0800 A probe light source produces probe light having a second wavelength different from a first wavelength of signal light. To a light modulator, the probe light and signal light produced from the probe light source are supplied. The light modulator multiplexes the probe light and signal light produced from the... http://www.freshpatents.com/-dt20120126ptan20120020666.php Mon, 30 Jan 2012 13:31:49 -0800 An apparatus comprising a plurality of optical line terminals (OLTs) corresponding to different providers that share an optical distribution network (ODN), a plurality of optical network units (ONUs) coupled to the OLTs via the same ODN and configured to communicate with the different OLTs using different corresponding pairs of upstream... http://www.freshpatents.com/-dt20120126ptan20120020667.php Mon, 30 Jan 2012 13:31:49 -0800 A method to transmit and receive significantly larger serial data stream to achieve conformance to the signal interface constraints of a pre-installed transmission system thus minimising bit error rate for both the large serial data streams and the pre-installed streams the method includes the steps of de-serialising an initial incoming... http://www.freshpatents.com/-dt20120126ptan20120020668.php Mon, 30 Jan 2012 13:31:49 -0800 The invention relates to an interconnecting node for use in interconnecting a passive optical network (PON) and a copper wire xDSL access network, wherein said interconnecting node comprises an optical network unit (ONU) arranged to be connected to an optical line termination (OLT) over the PON network; and at least... http://www.freshpatents.com/-dt20120126ptan20120020669.php Mon, 30 Jan 2012 13:31:49 -0800 An embodiment of the invention relates to a system comprising an optical device (10) and an evaluation device (20) for characterizing the optical device. The optical device comprising a 90° optical hybrid unit (30) having a first and second optical input (30E1, 30E2) and at least two optical outputs (30A1-30A4)... http://www.freshpatents.com/-dt20120126ptan20120020670.php Mon, 30 Jan 2012 13:31:49 -0800 A GPS system for obtaining data from a GPS signal received at a plurality of antenna stations, each antenna station being connected to a common receiver station through an optical fiber link The system includes a light generating module at the receiver station generating an optical reference signal, and an... http://www.freshpatents.com/-dt20120126ptan20120020671.php Mon, 30 Jan 2012 13:31:49 -0800 A system is disclosed. The system includes a first optical transceiver having a first set of transmitters and a first set of receivers and a second optical transceiver having a second set of transmitters coupled anti-symmetrically to the first set of receivers of the first optical transceiver and a second... http://www.freshpatents.com/-dt20120126ptan20120020672.php Mon, 30 Jan 2012 13:31:49 -0800 An optical transceiver has a communications mode and an optical time domain reflectometer (OTDR) mode. The transceiver comprises a transmitter channel and a receiver channel operable, in the communications mode, to respectively transmit and receive communications signals through respective external optical fibers. The transceiver also comprises a guide arrangement for... http://www.freshpatents.com/-dt20120126ptan20120020673.php Mon, 30 Jan 2012 13:31:49 -0800 The invention relates to an optical backplane, comprising a plurality of component connectors and at least two interconnections configurations interconnecting the component connectors. The at least two interconnections configurations allow a dynamical selection of an interconnections configuration interconnecting the component connectors.... http://www.freshpatents.com/-dt20120126ptan20120020674.php Mon, 30 Jan 2012 13:31:49 -0800 A robust and redundant status link is established by a first multi-channel optoelectronic device with a second multi-channel optoelectronic device in a multi-channel communication link. Transmitter bias currents are effectively modulated with a status link modulation signal representative of status data and subsequently modulated with primary data modulation signals. The... http://www.freshpatents.com/-dt20120126ptan20120020675.php Mon, 30 Jan 2012 13:31:49 -0800 A method performed by a networked device for energy efficient operation of an optical transceiver of the networked device is described herein. It is determined whether a port control of the networked device is enabled to operate in an energy efficient state. Where the port control is enabled to operate... http://www.freshpatents.com/-dt20120126ptan20120020676.php Mon, 30 Jan 2012 13:31:49 -0800 An apparatus for receiving optical signals in DQPSK and method of controlling a phase offset in receiving optical signals for DQPSK is provided. An original optical signal modulated in DQPSK is received. The original optical signal is delayed by one bit to make a delay optical signal such that an... http://www.freshpatents.com/-dt20120126ptan20120020677.php Mon, 30 Jan 2012 13:31:49 -0800 A/D converter 2 samples a coherent signal that is an analog signal in synchronization with a sampling clock signal so as to convert the analog signal into a digital signal. DSP 3 demodulates the digital signal converted by A/D converter 2 and computes a phase of the sampling clock signal...