http://www.freshpatents.com/Optical-communications-dtnewntc398.php USPTO Class 398 - Optical communications en-us Tue, 18 Aug 2009 22:26:13 -0700 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/System-and-method-for-fault-identification-in-optical-communication-systems-dt20090813ptan20090202237.php Tue, 18 Aug 2009 22:26:13 -0700 A system and method for fault identification in optical communication networks. One or more repeaters in the system includes a loop back path that couples an output a first amplifier for amplifying signals carried in a first direction through a repeater to an input of a second amplifier for amplifying... http://www.freshpatents.com/Method-for-monitoring-a-passive-optical-network-using-monitoring-units-dt20090813ptan20090202238.php Tue, 18 Aug 2009 22:26:13 -0700 A method for monitoring a passive optical network (1), PON, having a tree-like structure with a main line (3) and at least two branches (6.1 to 6.3), comprising: transmitting a wake-up signal (10) from the main line (3) to at least two monitoring units (DPM1 to DPM3) arranged in the... http://www.freshpatents.com/Service-management-channel-for-managing-an-optical-networking-service-dt20090813ptan20090202239.php Tue, 18 Aug 2009 22:26:13 -0700 An optical network and method for managing a service across an optical network over a dedicated circuit between first and second service termination points include generating a service performance report message (PRM) at each service termination point. Each service PRM has service-specific information related to a performance of the service... http://www.freshpatents.com/Systems-and-methods-for-parallel-multi-core-control-plane-processing-dt20090813ptan20090202240.php Tue, 18 Aug 2009 22:26:13 -0700 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... http://www.freshpatents.com/Optical-communication-system-and-method-for-distributing-content-aboard-a-mobile-platform-during-travel-dt20090813ptan20090202241.php Tue, 18 Aug 2009 22:26:13 -0700 An optical distribution system for vehicle information systems installed aboard passenger vehicles, such as automobiles and aircraft, and methods for manufacturing and using same. Each system resource of the vehicle information system couples with the optical distribution system via an optical transceiver system. The optical transceiver systems provide a link... http://www.freshpatents.com/Passive-optical-network-system-optical-line-terminator-and-communication-method-of-passive-optical-network-system-dt20090813ptan20090202242.php Tue, 18 Aug 2009 22:26:13 -0700 A passive optical network system (PON) has a plurality of OLTs and ONUs with different transmission rates. OLTs with different transmission rates share information of priority frames and destinations, and determine timing for frame transmission to ONUs so that the signal from each of the OLTs does not collide when... http://www.freshpatents.com/Direct-detection-for-receiving-polarization-multiplexing-signals-dt20090813ptan20090202243.php Tue, 18 Aug 2009 22:26:13 -0700 There is provided a method for detecting optical signals comprising employing a photo diode to both directly detect a received optical signal and convert it into an electrical signal for recovery of data bit stream information in the received optical signal, the received optical signal being derived from a separation... http://www.freshpatents.com/Bidirectional-optical-transceiver-module-using-a-single-optical-fiber-cable-dt20090813ptan20090202244.php Tue, 18 Aug 2009 22:26:13 -0700 Present invention is related to optical transceiver module using optical fiber cable and the detail is related to optical transceiver module transforming bi-directional transmission by single fiber cable using two different wavelength lights. Optical module is formed by modularized light emitting device, light receiving device, filter and lens and their... http://www.freshpatents.com/System-and-method-for-increasing-upstream-capacity-in-an-optical-network-dt20090813ptan20090202245.php Tue, 18 Aug 2009 22:26:13 -0700 A method for communicating in a passive optical network (PON), includes receiving traffic from a plurality of optical network units (ONUs) transmitting in an upstream transmission channel, wherein each of the ONUs may transmit at any wavelength within a wavelength band associated with the upstream transmission channel. The method also... http://www.freshpatents.com/Passive-optical-network-communication-system-dt20090813ptan20090202246.php Tue, 18 Aug 2009 22:26:13 -0700 A passive optical network communication system includes a number of subscribers' units connected to a central line termination unit through a passive optical coupler. The line termination unit includes a first section that transmits and receives a code division multiplex (CDM) signal, a second section that transmits and receives a... http://www.freshpatents.com/Optical-multiplexing-demultiplexing-device-dt20090813ptan20090202247.php Tue, 18 Aug 2009 22:26:13 -0700 In an optical multiplexing/demultiplexing device are arranged in parallel and disposed on a substrate. The optical multiplexing/demultiplexing device is disposed with three or more Mach-Zehnder interferometers between the first and second optical input/output ports. The optical multiplexing/demultiplexing device divides, by wavelength, multiplexed light comprising first light and second light whose... http://www.freshpatents.com/Wavelength-division-multiplexing-system-method-and-device-for-its-residual-dispersion-compensation-dt20090813ptan20090202248.php Tue, 18 Aug 2009 22:26:13 -0700 The present invention provides a wavelength division multiplexing system and a method and device for its residual dispersion compensation, wherein the device for residual dispersion compensation of wavelength division multiplexing system comprises: a performance parameter detecting device for receiving and detecting performance parameter of receiving terminal optical signal and sending... http://www.freshpatents.com/Pon--passive-optical-network--station-side-apparatus-pon-uplink-line-communication-method-and-program-recording-medium-dt20090813ptan20090202249.php Tue, 18 Aug 2009 22:26:13 -0700 A PON station side apparatus is provided with a selection section and a receiving section. For multiple data transferred from multiple PON terminal apparatuses that transmit data at different communication speeds in time division multiplexing, the selection section selects any of the multiple receiving circuits to be a receiving circuit... http://www.freshpatents.com/Universal-remote-controller-having-home-automation-function-dt20090813ptan20090202250.php Tue, 18 Aug 2009 22:26:13 -0700 A universal remote controller having a radio frequency (RF) control mode for generating RF signals for controlling an RF based home automation system and having an infrared (IR) control mode for controlling an infrared based electronic device using IR control signals. Control information input via a user interface is used... http://www.freshpatents.com/Optical-transmission-reception-device-dt20090813ptan20090202251.php Tue, 18 Aug 2009 22:26:13 -0700 An optical transmitting and receiving device 1 includes a main body portion 4 and has a base substrate 5 at a bottom-surface side of this main body 4. In a front surface 5a of this base substrate 5, formed is a recess-like first cavity 7 and second cavity 8, and... http://www.freshpatents.com/Optical-communication-module-and-method-for-using-the-same-dt20090813ptan20090202252.php Tue, 18 Aug 2009 22:26:13 -0700 An optical communication module includes an optical package including at least one semiconductor optical device, an optical filter for reflecting light of a specific wavelength and transmitting light of an other wavelength, an optical block including a transparent material and the optical filter, a housing that houses the optical package... http://www.freshpatents.com/Optically-isolated-analog-audio-circuits-dt20090813ptan20090202253.php Tue, 18 Aug 2009 22:26:13 -0700 An Audio circuit configured to receive an analog audio signal. The audio circuit includes an optical isolator having a LED configured to emit light modulated by the analog audio signal over a fiberless medium and a detector configured to replicate the analog audio signal received by the LED from the... http://www.freshpatents.com/Wide-field-of-view-amplified-fiber-retro-for-secure-high-data-rate-communications-and-remote-data-transfer-dt20090813ptan20090202254.php Tue, 18 Aug 2009 22:26:13 -0700 An optical system for remotely optical communications at a high data rate between a base station and a remote station under atmospheric turbulence conditions is disclosed. The remote station includes an entirely different type of retroreflector that does not use the conventional type of retroreflection, but instead consists of two... http://www.freshpatents.com/Abstract-optical-receiver-with-automatic-distortion-cancellation-dt20090813ptan20090202255.php Tue, 18 Aug 2009 22:26:13 -0700 An optical receiver includes closed-loop composite second order (CSO) distortion correction logic. An optical communication system includes a transmitter comprising open-loop composite second order (CSO) distortion correction logic, and a receiver comprising closed-loop composite second order (CSO) distortion correction logic.... http://www.freshpatents.com/Laser-package-including-semiconductor-laser-and-memory-device-for-storing-laser-parameters-dt20090813ptan20090202256.php Tue, 18 Aug 2009 22:26:13 -0700 A laser package may include a semiconductor laser and a memory device integrated into the laser package for storing parameters associated with the laser. The parameters may include laser manufacturing, operational and/or user parameters. For example, the semiconductor laser may be tunable and the memory device may store tuning parameter... http://www.freshpatents.com/Optical-transmission-apparatus-and-system-dt20090813ptan20090202257.php Tue, 18 Aug 2009 22:26:13 -0700 Disclosed is an optical fiber transmission system for transmitting an optical signal by DPSK modulation includes a plurality of NZ-DSF (Non-Zero Dispersion Shifted single-mode optical Fiber) transmission line blocks, each of which has N spans of a span comprising a serially connected NZ-DSF and optical repeater, and one span that... http://www.freshpatents.com/Current-mirror-circuit-and-optical-receiver-circuit-using-the-same-dt20090813ptan20090202259.php Tue, 18 Aug 2009 22:26:13 -0700 A current mirror circuit and an optical receiver circuit implementing with the current mirror circuit are disclosed. The current mirror circuit provides two MOSFETs and two differential amplifiers. The MOSFETs are operated under the same bias condition even the power supply voltage decreases due to the virtual short-circuit characteristic between... http://www.freshpatents.com/Method-for-improving-the-performance-of-phase-modulated-communication-systems-in-an-optical-network-dt20090813ptan20090202258.php Tue, 18 Aug 2009 22:26:13 -0700 A method and system for improving the performance of a differential-phase modulated optical communication system is disclosed. The system comprises a demodulator having a tunable element to adjust the free-spectral range (FSR) thereof, and a tunable phase shifter to adjust a frequency of a signal passing therethrough....