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Optical communications May archived by USPTO category 05/12

20120134664 - Joint switching method for an aggregation node, aggregation node and system: A joint switching method for an aggregation node, an aggregation node, and an optical network protection system including an aggregation node are provided. By monitoring information transferred between an active optical line terminal (OLT) and a broadband network gateway (BNG), the aggregation node finds a fault in time according to... Agent: Huawei Technologies Co., Ltd.

20120134663 - System and method for managing optical system failure: A reflector assembly is disclosed that may include a housing; a fiber stud disposed within the housing; a filter lens having an OTDR reflective layer, the filter lens located downstream from the fiber stud and receiving light energy from the fiber stud, and configured to be transparent for light within... Agent:

20120134665 - Testing of transmitters for communication links by software simulation of reference channel and/or reference receiver: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is... Agent: Clariphy Communications, Inc.

20120134666 - Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof: Optical fiber-based wireless systems and related components and methods are disclosed. The systems support radio frequency (RF) communications with clients over optical fiber, including Radio-over-Fiber (RoF) communications. The systems may be provided as part of an indoor distributed antenna system (IDAS) to provide wireless communication services to clients inside a... Agent:

20120134667 - All-optical, phase sensitive optical signal sampling: An optical sampling arrangement for high-speed measurement of the time-varying electric field of an optical input signal utilizes coherent mixing of the optical input signal with a reference laser source in a phase-diverse optical hybrid solution, followed by optical sampling of the coherently-mixed fields at the output of the optical... Agent: Exfo Inc.

20120134668 - Method and system for measuring latency: A system and method for measuring latency of an optical transport network includes generating a time stamp, transmitting the time stamp in an optical transport network, and processing the time stamp to measure latency of the optical transport network.... Agent: Verizon Business Network Services, Inc.

20120134669 - Methods and systems for multicast control: Disclosed are a system and a method for controlling multicast data. The system may comprise: a plurality of transceivers, each of which comprises a laser configured to generate an optical carrier, the generated optical carrier being modulated by electrical downstream p-t-p data so as to generate optical downstream p-t-p IRZ... Agent: The Chinese University Of Hong Kong

20120134671 - Continuously towed seafloor electomagnetic prospecting system: A towed system for underwater electromagnetic prospecting for use with a seaward vessel is provided. The towed system comprises a first portion, a second portion, and a tow cable. The first portion is located on the vessel and includes a controller and a power supply system. The second towed portion... Agent:

20120134670 - Transmitting device and transmitting/receiving device: A transmitting device includes a first optical transmitting medium, a second optical transmitting medium, and an optical multiplexing portion. The first optical transmitting medium outputs a first optical signal having a predetermined signal cycle. The second optical transmitting medium outputs a second optical signal obtained by delaying the first optical... Agent: Fuji Xerox Co., Ltd.

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... Agent: Cisco Technology, Inc.

20120134674 - Apparatus and method for mapping a client signal: Disclosed are an apparatus and a method for mapping an SDH signal and other 40-Gbps client signals through a single data path. The mapping apparatus supports both a justification byte mapping scheme and a sigma-delta distribution mapping scheme and implements a single data path. Accordingly, power consumption may be reduced... Agent: Electronics And Telecommunications Research Institute

20120134673 - Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof: Optical fiber-based wireless systems and related components and methods are disclosed. The systems support radio frequency (RF) communications with clients over optical fiber, including Radio-over-Fiber (RoF) communications. The systems may be provided as part of an indoor distributed antenna system (IDAS) to provide wireless communication services to clients inside a... Agent:

20120134675 - Quantum repeater and system and method for creating extended entanglements: An iterative method is provided for progressively building an end-to-end entanglement between qubits in first and second end nodes (91, 92) of a chain of nodes whose intermediate nodes (90) are quantum repeaters. At each iteration, a current operative repeater (90) of the chain merges an entanglement existing between qubits... Agent:

20120134676 - Polarization-multiplexed optical transmission system, polarization-multiplexed optical transmitter, and polarization-multiplexed optical receiver: There is a need to prevent two receivers from converging on a state of receiving the same polarization state, fast start receivers, and ensure highly reliable operations. A polarization-multiplexed transmitter previously applies frequency shifts of frequencies +Δf and −Δf to X-polarization and Y-polarization digital information signals to be transmitted. Optical... Agent: Hitachi, Ltd.

20120134677 - Method and system for transferring time division multiplexing service data: The present invention discloses a method and system for transferring TDM services in GPON, the method includes the steps of: in the case of performing the GPON ranging process, buffering the uplink TDM service data received by an optical signal transceiver in an Input Buffer, reading out and transferring the... Agent: Huawei Technologies Co., Ltd.

20120134678 - System for providing physically separated compute and i/o resources in the datacenter to enable space and power savings: An embodiment of a system and method disaggregate I/O resources from a server's compute resources, such as CPU and memory, by moving the server's local I/O devices to a remote location apart from the server's compute resources. An embodiment uses optical technology to accomplish the fast communication speeds needed between... Agent:

20120134679 - Data transmission network: A data transmission network comprising: a base comprising: a base light source and a base light detector; a plurality of nodes, each node comprising a node light source and a node light detector; and a plurality of optical fibres arranged to form a optical fibre network. Each optical fibre is... Agent: Airbus Operations Limited

20120134680 - Inter-transceiver module communication for firmware upgrade: An operational optical transceiver configured to update operational firmware using an optical link of the transceiver. The optical transceiver includes at least one processor and a system memory capable of receiving firmware. The optical transceiver receives an optical signal over the optical link containing the update firmware. The optical transceiver... Agent: Finisar Corporation, Inc.

20120134681 - Semiconductor laser drive device, semiconductor laser drive method, light transmission device, optical wiring module, and electronic device: A semiconductor laser drive apparatus comprises a bias current setting section (232) which sets a bias current value on the basis of the drive temperature so that the temperature characteristic of the bias current value with respect to the drive temperature may be a linear function having a slope except... Agent: Omron Corporation

20120134682 - Method and apparatus for clearing an optical channel: A method and apparatus for clearing an optical channel for transmitting data through free space between a first and second location includes a light beam, wherein the light beam has a spatially and/or time-dependent modulated intensity profile, and is substantially collimated so that the intensity profile is conserved over a... Agent: The Boeing Company

20120134683 - Optoelectronic processing apparatus and processing method for constraint information: The invention provides an optoelectronic processing apparatus and methods for processing constraint information. The optoelectronic processing apparatus is applied to the optical transport network OTN device, and comprises: a 3R regeneration unit for reamplifying, reshaping and retiming a signal; a wavelength conversion unit for performing wavelength conversion to the signal;... Agent:

20120134684 - Adaptive equalizer, optical receiver, and tap coefficient correcting method: An adaptive equalizer includes a finite impulse response filter with a predetermined number of taps; and a tap coefficient adaptive controller having a register to hold tap coefficients for the filter, a weighted center calculator to calculate a weighted center of the tap coefficients, and a tap coefficient shifter to... Agent: Fujitsu Limited

20120134685 - Loop filter: A loop filter include: a register that stores a result of arithmetic operation performed on a complex signal and outputs the stored complex signal; a first multiplier that multiplies the complex signal output from the register and a predetermined coefficient; an absolute value judging unit that outputs a multiplier coefficient... Agent: Fujitsu Limited

20120128347 - Optical switching device, optical add device, and optical drop device: An optical switching device includes plural wavelength selective switches that respectively have a first port and a plurality of second ports; and an optical coupler that has a plurality of third ports on an input-side or an output-side, respectively optically coupled to the first ports of the wavelength selective switches.... Agent: Fujitsu Limited

20120128348 - Light-emission error preventing circuit for optical transmitter: A subscriber-side optical network unit (ONU) includes a control LSI for outputting a data signal and a pre-bias signal at fixed intervals, an optical transmitter-receiver for producing optical output in response to these signals, and a light-emission error preventing circuit for preventing light-emission error. First and second light-emission error detecting... Agent: Mitsubishi Electric Corporation

20120128350 - Balanced bypass circulators and folded universally-balanced interferometers: The invention generally relates, in one aspect, to an interferometer system. The interferometer system includes a splitter/combiner element (SCE), a first bi-directional optical path, and a second bi-directional optical path.... Agent: Massachusetts Institute Of Technology

20120128349 - Passive optical network system, station side apparatus and power consumption control method: In a PON system having a station side apparatus (OLT) and plural home side apparatuses (ONUs), the station side apparatus includes an uplink frame transfer processing part controlling frame transfer from the home side apparatus to the station side apparatus, a transfer database managing the destination of frame transfer from... Agent: Hitachi, Ltd.

20120128351 - Communication system, measuring apparatus, transmitting apparatus, and measurement method: A communication system including: a transmission apparatus configured to modulate a first light by using a first signal to be transferred and a second signal having a frequency different from a frequency of the first signal so as to generate a first optical signal, modulate a second light by using... Agent: Fujitsu Limited

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... Agent:

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... Agent: Zte Corporation

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... Agent:

20120128355 - Wavelength selective optical switch device: In a wavelength selective optical switch device that disperses a WDM light beam according to their wavelengths. Dispersed light beams is applied to a wavelength selecting element. Incident light beams are separately reflected in different directions according to their wavelengths by use of the multi-level optical phased array. In the... Agent:

20120128357 - Communication system, station-side optical line terminating apparatus, user-side optical line terminating apparatus, control apparatus, and communication method: An optical communication system that connects a plurality of user-side optical line terminating apparatuses (hereinafter referred to as ONUs) to a station-side optical line terminating apparatus (hereinafter referred to as OLT) using a common optical fiber, wherein the ONU as at least a part of the ONUs includes a transceiver... Agent: Mitsubishi Electric Corporation

20120128356 - Method for administrating optical access nodes and optical access node thereof: A method for administrating an optical access node is disclosed, the method comprises: one or more administration terminal nodes are established in the optical access node, and constitute an internal Operation, Administration and Maintenance (OAM) domain in said administration terminal node; sends the Ethernet Operation, Administration and Maintenance message between... Agent:

20120128358 - Transmission method and assembling method for physical layer operations, administration and maintenance (ploam) message in a passive optical network: The present invention provides a transmission method for a physical layer operations, administration and maintenance (PLOAM) message in a passive optical network. The method includes: a transmitter dividing a PLOAM message to generate more than two new PLOAM messages, each of which comprises at least a message identification (Message ID)... Agent: Zte Corporation

20120128359 - Method and system for bidirectional optical communication: A method for bidirectional optical communication comprising the steps of:—at a first optical line terminal, directly modulating a laser source to generate a downstream optical signal which has an optical power spectrum comprising two peaks having a frequency separation and a non zero power difference at generation;—propagating said downstream optical... Agent:

20120128360 - Open optical access network system: The present invention relates to an open optical access network system in which one optical access network is open to enable a plurality of service providers and a plurality of subscribers to simultaneously use the optical access network, to thereby improve the efficiency of using the optical access network, wherein... Agent: Electronics And Telecommunications Research Institute

20120128361 - Method and system for a polarization mode dispersion tolerant optical homodyne detection system with optimized transmission modulation: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of... Agent:

20120128362 - Communication system, dispersion slope imparting section, and method for communicating: A communication system includes a transmission path through which an optical signal is propagated; and dispersion slope imparting sections provided on a transmitting side and a receiving side of the transmission path, the dispersion slope imparting sections imparting different dispersion and dispersion slope characteristics in accordance with a wavelength band... Agent: Fujitsu Limited

20120128363 - Method and device for cross protection: The present invention discloses an device for cross protection, including: a service unit source end, configured to map optical data unit (ODUk) signals into the same time slots of n line similar optical transport network (OTN) frame format (OTUxG) data buses, and obtain m+n line OTUxG data through protective coding... Agent: Zte Corporation

20120128364 - Fiber optic distributed input/output system for wind turbine: An industrial control system for use in power generating plants, manufacturing plants, oil and gas processing plants, utility sub-stations, utility grid switching yards, and wind or fluid-flow turbine generating systems. A master controller such as a master control unit or turbine control unit (MCU or TCU) printed circuit board (PCB)... Agent: Clipper Windpower, LLC

20120128366 - Apparatus and method for performing communication using chrominance information in visible light communication system: In a transmission apparatus, a reception apparatus and a method for performing communication using chrominance information, a transmission apparatus includes a symbol converter to obtain a symbol from data; a symbol modulator to generate a chrominance value based on the symbol; a luminance controller to generate a luminance value; a... Agent: Pantech Co., Ltd.

20120128365 - Apparatus and method for performing communication using light wavelengths in a visible light communication system: A transmitting apparatus includes a controller to classify data to be transmitted and to select a corresponding wavelength, a signal modulator to encode the data into an electrical signal, and a light emitting unit to emit a visual light at the selected wavelength based on the electrical signal. A receiving... Agent: Pantech Co., Ltd.

20120128367 - Server device that sets security levels in accordance with distances between devices, client device, communication system, integrated circuit for server control, integrated circuit for client control, server program, client program, method for connecting: A server device includes an information management unit, an optical signal transmission unit, and a service provision unit. The information management unit stores and manages a plurality of types of connection information having different importance levels, respectively, in association with the respective importance levels, the connection information being necessary for... Agent:

20120128368 - Differential code optical transmission and reception device: A differential code optical transmission and reception device including: a digital signal processing optical transceiver that converts information data into an optical signal and transmits it to a communication channel, a reception front end part that receives the optical signal from the communication channel, an O/E conversion part that converts... Agent: Mitsubishi Electric Corporation

20120128369 - Transceiver unit: A phase synchronized optical master-slave loop comprises at the slave-end a processor (105) configured to include a first timing signal into a bit stream to be transmitted to the master-end, detect a second timing signal from a bit stream received from the master-end, and calculate a phase difference between a... Agent: Tellabs Oy

20120128371 - Communication system and method: A communication system including: a first communication device located in a first zone; a second communication device located in a second zone for generating an optical carrier signal; and at least one optical fibre connected to the first communication device for supplying power for operation of the first communication device... Agent: Commonwealth Secientific And Industrial Research Organization

20120128370 - Optical hetrodyne devices: An optical heterodyne device includes an optical meta-material exhibiting non-linear behavior. The optical meta-material mixes an input signal and a local signal to produce a heterodyne signal.... Agent:

20120128372 - Optical line termination, pon system, and data reception processing method: An optical line termination includes a deserializer that parallelizes burst data received from a termination device, a fixed-pattern generating unit that generates fixed pattern data that is a predetermined fixed data, and a data selecting unit that selects either the fixed pattern data or the burst data based on a... Agent: Mitsubishi Electric Corporation

20120128373 - Method and apparatus of performing ont wavelength tuning via a heat source: A method and apparatus of tuning a signal received from a first network terminal at a second network terminal is disclosed. The method may include receiving the signal at the second network terminal. The signal may be operating at a first wavelength. The method may also include determining a port... Agent: Alcatel-lucent Usa Inc.

20120128374 - Apparatus and method for performing communication using polarized light: In an apparatus and a method for performing communication by using polarization property of light, a transmission apparatus includes a controller to establish a first channel corresponding to a first polarization property; a signal encoder to encode data into an electrical signal; a light emitting unit to emit light based... Agent: Pantech Co., Ltd.

20120128375 - Integrated semiconductor laser element, semiconductor laser module, and optical transmission system: An integrated semiconductor laser element includes: semiconductor lasers that oscillate at different oscillation wavelengths from one another, each laser oscillating in a single mode; an optical coupler; and a semiconductor optical amplifier. At least one of active layers of the semiconductor lasers and an active layer of the semiconductor optical... Agent: Furukawa Electric Co., Ltd.

20120128377 - Optical digital coherent receiver: An ALC processing unit to adjust the signal level of outputs from an adaptive equalizer to a target value is provided in a stage later than the adaptive equalizer and earlier than a frequency offset estimation/compensation unit in an optical digital coherent receiver. The ALC processing unit generates a histogram... Agent: Fujitsu Limited

20120128376 - Pmd-insensitive method of chromatic dispersion estimation for a coherent receiver: Consistent with the present disclosure, a method and system for estimating chromatic dispersion of an optical signal in a coherent receiver is provided that is insensitive to polarization mode dispersion (PMD) and other polarization effects in the optical communication system. The effects of chromatic dispersion in the optical system are... Agent:

20120121249 - Systems and methods of optical path protection for distributed antenna systems: Systems and methods for optical path protection for distributed antenna systems are provided. In one embodiment, a system comprises a hub and at least one node located remotely from the hub. The hub is coupled to the node by first and second fiber paths, the first fiber path comprising an... Agent: Adc Telecommunications, Inc.

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;... Agent: Verizon Patent And Licensing Inc.

20120121251 - Monitoring and control of electronic devices: A method, a system, and a computer program product for managing one or more electronic devices. Performance of an electronic device is monitored and presented to a user through a digital agent interface. The performance of the electronic device is controlled automatically by digital agent through the digital agent interface.... Agent: Neophotonics Corporation

20120121252 - Optical communication system for supporting remote operation management: Provided is an optical communication system including: a remote control device for generating OAM (Operation, Administration, and Maintenance) signal including OAM information for equipment, converting the OAM signals to OAM optical signals, overlaying the OAM optical signals and communication upstream signals transmitted to a Communication Stations device, and controlling the... Agent: Mel

20120121253 - Ranging method and apparatus in passive optical network: The present invention discloses a method for ranging in a passive optical network, and the method includes: obtaining a Round Trip Delay (RTD) between an Optical Line Terminal (OLT) and an Optical Network Unit (ONU); and opening a quiet window used for the ranging for the ONU according to the... Agent: Zte Corporation

20120121254 - Multi-stage polarization mode dispersion compensation: A polarization mode dispersion compensator that includes two stages, one for reducing or eliminating first order polarization mode dispersion of an optical signal, and second stage for reducing or eliminating higher order polarization mode dispersion of the optical signal. In each stage, the polarization is adjusted so as to reduce... Agent: Xtera Communications

20120121255 - Optical switching device and communications system: An optical switching device includes a optical add/drop multiplexer that at least adds an optical signal into and/or drops an optical signal from wavelength division multiplexed light that is wavelength division multiplexed optical signals; a plurality of amplifiers that are disposed on optical paths included in the optical add/drop multiplexer... Agent: Fujitsu Limited

20120121256 - Optical transmission device, optical transmission system and optical transmission method: An optical transmission device includes an extractor that extracts respective optical signals from optical signals multiplexed from a plurality of optical signals of different wavelengths, a detector that detects wavelengths of the extracted respective optical signals, a storage that stores the wavelengths of the detected respective optical signals, and a... Agent: Fujitsu Limited

20120121257 - Pre-emphasis control method and optical transmission system: A pre-emphasis control method includes calculating an average value of transmission characteristics based on transmission characteristics of a plurality of light beams received by the receiver, and determining that, among signals of the plurality of light beams, a wavelength with a deviation from the average value is a wavelength at... Agent: Fujitsu Limited

20120121258 - Method, apparatus, and system for transmitting information in passive optical network: A method, an apparatus, and a system for transmitting information in a passive optical network are provided. The method mainly includes: obtaining OAM information that an RE device needs to report to an OLT device, performing modulation processing, according to the OAM information, on a downlink optical signal sent by... Agent: Huawei Technologies Co., Ltd.

20120121259 - Optical transmission device and optical transmission method: An optical transmission device includes a first power monitor to monitor a first signal into which second signals with respectively different wavelengths are multiplexed so as to measure received power of the first signal; an amplifier to amplify the first signal, to generate a third signal; a driver to drive... Agent: Fujitsu Optical Components Limited

20120121260 - System for intercepting signals to be transmitted over a fiber optic network and associated method: A system is provided for intercepting signals transmitted between a target served by a fiber optic network and a subscriber. A network is described having a phone switch at a central office configured to receive signals for transmission to and from a target, such as the target of a criminal... Agent: Verizon Patent And Licensing Inc.

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... Agent:

20120121262 - Synchronous packet switches: A synchronous packet switch comprises output modules, input modules, optical connections and a switch control unit. The output modules comprise optical receivers each configured to receive optical signals at a different wavelength. The input modules receive electric signals carrying data cells to be routed. Each input module comprises optical transmitters,... Agent: Telefonaktiebolaget L M Ericsson (publ)

20120121263 - Pon system and terminal operation registering method: In a PON system in which communication is performed at a plurality of types of transmission rate (L, M, and H) in an upstream direction from a plurality of terminals connected to a station apparatus through optical fibers, within a discovery period for allowing an unregistered terminal to be recognized... Agent: Sumitomo Electric Industries, Ltd.

20120121264 - Apparatus and method for transmitting light, and apparatus and method for receiving light: An optical transmitting apparatus optically modulates a transmitting signal to transmit the signal to an optical receiving apparatus using a phase of two optical carriers having each wavelength, and an optical receiving apparatus demodulates an optical signal having a modulated phase with intensity modulation to detect a transmitting signal.... Agent: Electronics And Telecommunications Research Institute

20120121265 - Apparatus and method for two-stage optical network: A manner of providing an energy-efficient two-stage PON using a multistage-PON repeater to forward data traffic and other communications between the first stage and the second stage. The multistage-PON repeater receives BI-PON transmission frames from and OLT and decimates them, forwarding data intended for end devices of the second stage.... Agent: Alcatel-lucent Usa Inc.

20120121266 - Receiver, light spectrum shaping method, and optical communication system: A receiver receiving a phase-modulated optical frequency division multiplexed signal is provided. The receiver includes a light spectrum shaper configured to extract a carrier wave and a modulated light component contained in either one of a short-wavelength-side waveband or a long-wavelength-side waveband with respect to the carrier wave, to output... Agent: Fujitsu Limited

20120121267 - Optical add-drop multiplexer branching unit and corresponding optical transmission method and system: Embodiments of the present invention provide an Optical Add-Drop Multiplexer (OADM) Branching Unit (BU) and the corresponding optical transmission method and system. The method includes: separating a part of optical signals of different wavelengths from two trunk fibers respectively, coupling the part of optical signals of different wavelengths, and transmitting... Agent: Huawei Marine Networks Co., Ltd.

20120121268 - Method and apparatus of microwave photonics signal processing: A radiofrequency (rf) signal-processing device offers the possibility of high bandwidth operation. The disclosed device applies principles of microwave photonics and Linear Amplification based on Nonlinear Components (LINC). For some applications, the device may be embodied in an rf amplifier or rf transmitter. In an embodiment, an optical phase modulator... Agent:

20120121270 - Multi-port accumulator for radio-over-fiber (rof) wireless picocellular systems: A multi-port accumulator apparatus for a radio-over-fiber (RoF) wireless picocellular system comprising a housing supporting a tail cable port and transponder ports. The tail cable port is optically coupled to the RoF transponder ports to provide for transmission of uplink and downlink optical signals between the tail cable port and... Agent:

20120121269 - Multifunction receiver-on-chip for electronic warfare applications: What is provided is a receiver-on-a-chip comprising a monolithic integrated circuit that reduces the receiver to a cigarette-pack-sized assembly mountable directly at an antenna element, with a much-increased operational bandwidth and instantaneous bandwidth, increased dynamic range and with a two-order-of-magnitude decrease in size and weight. Moreover, because of the elimination... Agent:

20120121271 - Method and apparatus of free-space optical signal reception having enhanced performance in scattering environments: A free space optical receiver is provided that can mitigate the detrimental effects of scattering. In an implementation, the optical beam is imaged onto a detector array in the image plane of the receiver telescope. The detector array has a series of two or more concentric zones for detecting optical... Agent:

20120121272 - Opto-electronic assembly for high speed transmission: The optoelectronic assembly for high speed signal transmission based on surface-emitting/receiving components is disclosed. The assembly contains a mounting plate with a top side used for the mounting of the components; single or multiple electrooptical or optoelectronic transducer components with the optical ports of the transducer on the top side... Agent: Vi Systems Gmbh

20120121273 - Common base circuit with output compensation, current-to-voltage circuit configured with common base amplifier, and optical receiver implemented with the same: An amplifier implementing with a common base circuit is disclosed. The amplifier includes the common base circuit, a current shunt, and a current supplement. The common base circuit receives an input current. The current shunt shunts the input current based on the average of the output of the pre-amplifier. The... Agent: Sumitomo Electric Industries, Ltd.

20120121274 - Clock recovery for optical transmission systems: A receiver for an optical communications system which corrects distortion of a received signal. A clock recovery system utilising a feedback and feedforward system are provided. The feedback loop comprises a phase detector and a clock source, while the feedforward loop comprises the phase detector and a delay element for... Agent: Cisco Technology, Inc.

20120114326 - Automatic recovering method and device for node resource state in dense wavelenght divesion multiplexing based automatic swithched optical network system: The present invention provides a method and apparatus for automatically restoring node resource state in the Dense Wavelength Division Multiplexing Based Automatic Switched Optical Network (WSON) system. This method comprises the following steps: using each node in the WSON system as an initiation node and notifying the resource state of... Agent:

20120114327 - Method and apparatus for adaptive optical wireless communication: An optical wireless communication device having a PhotoDiode (PD) for photosensitive detection means, receives a guide message from a specific optical wireless communication device, determines any one optical wireless communication scheme among different optical wireless communication schemes which are included in the guide message and supportable by the specific optical... Agent: Samsung Electronics Co., Ltd.

20120114328 - Method and system for tracking signaling in automatically switched optical network: The present invention discloses a method and system for tracking signaling in an automatically switched optical network (ASON), wherein the method comprises a step of setting a signaling tracking filtering condition for a corresponding signaling tracking task, and the following steps that: an ASON node collects and reports a received... Agent: Zte Corporation

20120114330 - Monitoring optical parameters of a modulated optical signal: A method of monitoring optical parameters of a modulated optical signal comprises receiving a first optical power, Xi, of said optical signal for a first bandwidth, Bi, across the said optical signal and receiving a second optical power, Xj, of said optical signal for a second bandwidth, Bj, across the... Agent: Telefonaktiebolaget L M Ericsson (publ)

20120114329 - Optical impairment aware path computation architecture in pce based network: An apparatus comprising at least one processor configured to implement a method comprising receiving a path computation request comprising at least one path computation constraint, and determining whether there is a path through an optical network that satisfies the path computation constraints. Also disclosed is an apparatus configured to process... Agent: Futurewei Technologies, Inc.

20120114331 - Passive optical network system and sleep time determination method: The longest possible sleep time is selected while data missing is prevented in a PON system by referring to the link speeds and the queue buffer capacities of an OLT and ONUs. The OLT calculates a first sleep time candidate based on a first link speed at which the OLT... Agent: Hitachi, Ltd.

20120114332 - Reconfigurable optical add/drop multiplexing device for enabling totally inresistant colorless: The present invention provides a reconfigurable optical add/drop multiplexing device for enabling a totally inresistant colorless, wherein a dropping unit is configured to separate multi-wavelength optical signals which are among direction 1˜X and are broadcast inputted in a circuit direction, switch the multi-wavelength optical signals among the direction 1˜X to... Agent: Zte Corporation

20120114334 - Method and apparatus for improved upstream frame synchronization in a passive optical network: In a passive optical network, upstream transmission frames from an ONU to an OLT can include additional delimiters that assist in overcoming high signal distortion at the beginning of the frame that can obscure an initial frame delimiter. The second delimiter can be inserted into the frame at various locations... Agent:

20120114333 - Method and system for quickly updating ranging results of optical network unit by optical line terminal: The disclosure provides a method for quickly updating ranging results of optical network units by an optical line terminal. The method comprises the following steps: an Optical Line Terminal (OLT) distributes an acquired ranging difference to all the Optical Network Units (ONUs); and the current ONU implements quick updating of... Agent: Zte Corporation

20120114335 - System and method for transmitting optical signals: A method of transmitting optical signals in a submarine optical network and an optical unit for performing the method, the optical unit is configured for receiving an optical signal comprising a plurality of wavelengths where at least some of the wavelengths comprise traffic data. The optical unit includes a processor... Agent:

20120114336 - Network digital signage solution: The present invention relates to a network based digital signage apparatus and a method for causing the digital signage apparatus to retrieve content from a remote server, for use in displaying content thereon. By utilizing a computer network to cause a digital signage device to remotely retrieve and store and/or... Agent: Sony Corporation

20120114337 - Capturing device, capturing method, and capturing program: A capturing device is provided with an optical receiver which receives a beam from outside as a reception beam, a reception beam capturing unit which performs a capturing operation by which the reception beam is introduced to the optical receiver, an optical transmitter which generates a transmission beam transmitted to... Agent: Nec Corporation

20120114338 - Apparatus and method for monitoring a variety of resource consumption meters: An apparatus is disclosed for attachment to a resource consumption meter emitting and detecting a signal having a first frequency relative to the rate of metered resource consumption. The apparatus comprises at least one signal detection means adapted to detect said signal from said resource consumption meter; and, a circuit... Agent:

20120114339 - Data transmission system using optical fiber: A data transmission system using an optical fiber includes an optical fiber, a first light-emitting device, a second light-emitting device, a first photo-detecting device and a second photo-detecting device. Each of the first light-emitting device and the second light-emitting device is optically coupled to the input facet of the optical... Agent: Amtran Technology Co., Ltd.

20120114340 - Optical transmitter and interconnecting circuit board: An optical transmitter including: an optical module; an interconnecting circuit board configured to be electrically coupled to the optical module; and a printed circuit board configured to be electrically coupled to the interconnecting circuit board; wherein the interconnecting circuit board includes: a coplanar waveguide; and a microstrip line including a... Agent: Fujitsu Optical Components Limited

20120114341 - System and method for frequency-domain chromatic dispersion and polarization mode dispersion compensation with time-domain channel estimation: A system and method are disclosed which compensate for chromatic dispersion and polarization mode dispersion in a digital signal. The signal is adjusted for chromatic dispersion in the frequency-domain. The signal is then converted to the time-domain and at least a portion of the signal is estimated to produce channel... Agent: Nec Laboratories America, Inc.

20120106947 - Method for monitoring fiber line state, repeater, submarine cable system: The present invention relates to communications technologies, and discloses a method for monitoring the state of a fiber line, a repeater, and a submarine cable system. The repeater includes a first optical amplifier (OA), a second optical amplifier, a first gating unit, a second gating unit, a first coupler, a... Agent: Huawei Marine Networks Co., Ltd.

20120106948 - Optical network in-band control plane signaling, virtualized channels, and tandem connection monitoring systems and methods: The present disclosure provides improvements with respect to in-band control plane signaling, virtualized channels, and tandem connection monitoring in optical networks utilizing Synchronous Optical Network (SONET), Synchronous Digital Hierarchy (SDH), Optical Transport Network (OTN), and the like. In an exemplary embodiment, the present disclosure includes an optical network operating a... Agent:

20120106949 - Optical transceiver module, optical transmission device, and optical transmission method: An optical transceiver module adapted to a link device includes a connection unit, a driving unit and optical transmitting and receiving units. The connection unit, to be coupled with the link device, includes an indicating element for generating an indicating signal when the connection unit is coupled with the link... Agent: Via Technologies, Inc.

20120106950 - Method and system for optical network smart timer management via delay measurement between spans: A method and system for determining timers in an High Level Data Link Control (HDLC) Traffic Manager (HTM) state machine are disclosed. According to one aspect, the invention provides for determining a transit delay between two nodes by sending a first packet having a delay measurement byte to a second... Agent: Ciena Corporation

20120106951 - In-band optical signal-to-noise ratio measurement: Various embodiments relate to an in-band measurement of the optical signal-to-noise ratio (OSNR) of an optical signal in an optically-amplified transmission system. A demodulation device may tap a transmission fiber to receive an optical signal containing a low-frequency signal. A filter may implement first and second passbands to filter portions... Agent: Alcatel Lucent Canada, Inc

20120106952 - Method and device for optical power budget in passive optical network: A method and a device for an optical power budget in a passive optical network are disclosed in the present invention, wherein said method includes: acquiring a corresponding minimum optical link loss according to a transmission requirement of a passive optical network with a large splitting ratio or long distance... Agent: Zte Corporation

20120106953 - Dual laser-power-level control and calibration system for burst-mode and continuous-mode transmitter: Dual laser-power-level control and calibration system for burst-mode and continuous-mode transmitter. A first signal path receives a transmit signal that also drives the transmit laser, and a second signal path receives the output of a monitor diode. The first and second signal paths include filtering so that the two signal... Agent: Maxim Integrated Products, Inc.

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... Agent: France Telecom

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... Agent: Lockheed Martin Corporation

20120106956 - Gmpls signaling for networks having multiple multiplexing levels: A method comprising the steps of receiving, with circuitry at a first node, a signal indicative of a request to set up an optical channel data unit label switched path between the first node and a second node in a network. Time slots for a plurality of types of signals... Agent:

20120106959 - Method and equipment for adjusting power amplification: and wherein for a channel corresponding to a connection having a higher vulnerability characterizing parameter, the tolerated difference between an actual channel power level and the target power level is lower than for a channel corresponding to a connection having a lower vulnerability characterizing parameter.... Agent:

20120106958 - Optical multiplexing terminating device, passive optical network system and method for allocating wavelength: A passive optical network system such that the power consumption can be reduced as much as possible according to the end-user traffic. An OLT uses the DBA function thereof and sequentially uses frequencies in ascending order of transmission rate in order to sequentially allocate bands to ONUs in ascending order... Agent: Hitachi, Ltd.

20120106957 - Single virtual domain fibre channel over ethernet fabric: The entire FCoE fabric is a single virtual domain, even though there may be multiple FCFs and FDFs. The virtual domain is a different Domain_ID than any of the FCFs. In certain embodiments there are multiple FCFs, of which one is selected as the master or designated FCF. The master... Agent: Brocade Communications Systems, Inc.

20120106961 - Method for data frame reduction in a photonic-based distributed network switch: A photonic-based distributed network switch and method where the switch is designed to reduce or filter optical data frames entering a port of the switch so that only data frames that are appropriate for the port are forwarded from the port. This reduces the amount of data that needs to... Agent: Lockheed Martin Corporation

20120106960 - Reliable load-balanced multi-photonic star configuration: A photonic-based distributed network switch that utilizes multiple photonic broadcast stars and separate optical transmitters to improve overall reliability, allow load balancing, and provide failover for the network switch and the network with which the switch is used.... Agent: Lockheed Martin Corporation

20120106962 - Polarization multiplexing and transmitting apparatus: A polarization multiplexing and transmitting apparatus generates polarization multiplexed light by multiplexing modulated signal components that having varying intensities and are in polarization states orthogonal to each other. The polarization multiplexing and transmitting apparatus includes a converting unit that converts light generated by a light source into signal components having... Agent: Fujitsu Limited

20120106963 - System, method and relevant device for signal transmission: A system, a method and a related device for signal transmission are provided in order to improve utilization efficiency of the fiber. The system includes an optical line terminal (OLT), a plurality of optical network units (ONU), a base band unit (BBU), a plurality of remote radio units (RRU), a... Agent: China Mobile Communications Corporation

20120106964 - Novel rfog cpe device offering enhanced services overlay: A method includes: receiving a downstream optical signal propagating away from a head end; dividing the downstream optical signal into a downstream high portion and a downstream low portion; diplexing the downstream low portion with an upstream low portion; combining the upstream low portion and an upstream high portion; and... Agent:

20120106965 - optical source for wavelength division multiplexed optical network capable of high-speed transmission of an optical signal by using un-polarized light source and a wavelength division multiplexed-passive optical network having the same: An optical source for wavelength division multiplexed optical network according to the present invention comprises a broadband light source (BLS); an arrayed waveguide grating (AWG) for spectrum-dividing incoherent light outputted from the BLS; a circulator being connected between the BLS and the AWG; and a plurality of un-polarized light sources... Agent: Korea Advanced Institute Of Science And Technology

20120106969 - Communications apparatus, multiplex communications apparatus, communications system, and communication method: A communications apparatus includes a transmitter that transmits signal light that is wavelength division multiplexed with other signal light and that is to be transmitted to an opposing apparatus, and a processor that is operative to change a frequency of the signal light to be transmitted by the transmitter based... Agent: Fujitsu Limited

20120106967 - Method and device for signal processing and communication system comprising such device: A method and a device provide signal processing. The method contains the steps of separating a pilot signal from an analog signal, reducing or compensating a noise based on a local oscillator laser by demodulating the pilot signal, processing the demodulated pilot signal, and combining the processed demodulated pilot signal... Agent: Nokia Siemens Networks Oy

20120106968 - Optical transmission apparatus: There is provided an optical transmission apparatus including: a transmitter to output an optical signal to be transferred to other optical transmission apparatus; a first dummy light source to generate first dummy light having a wavelength which is not included in an optical signal received from other optical transmission apparatus;... Agent: Fujitsu Limited

20120106966 - Transponder pool sizing in highly dynamic translucent wdm optical networks: A system and method for sizing transponder pools in a dynamic wavelength division multiplexing optical network having selected nodes designated to have a shared transponder pool is presented. The method comprises performing network simulations, generating transponder pool histograms (for each node having a transponder pool) based on the network simulations,... Agent: Telcordia Technologies, Inc.

20120106970 - Reconfigurable optical add drop multiplexer core device, procedure and system using such device, optical light distributor, and coupling-ratio assigning procedure: A reconfigurable optical add drop multiplexer core device includes a light distributor, a light combiner, and first and second sets of add and drop ports. The light distributor is configured to receive an optical signal along a primary input of the reconfigurable optical add drop multiplexer core device and to... Agent: Tellabs Operations, Inc.

20120106971 - Optical transmission device and optical transmission system: An optical transmission device includes: an optical signal generator to generate and transmit an optical signal that transmits data; a detector to detect a number of active clients; and a processor to determine transmission rate of the optical signal according to the number of active clients and quality of the... Agent: Fujitsu Limited

20120106972 - Universal remote control: A universal remote control includes a hand held housing; a plurality of button zones provided on a substantial portion of a top surface of the housing, each button zone comprising a plurality of pushbuttons each having a character printed thereon; a control assembly partially exposed on the housing and comprising... Agent: Sunrex Technology Corp.

20120106973 - Method and apparatus for optical wireless architecture: Embodiments of the present invention pertain to optical wireless architecture. More particularly, certain embodiments of the invention pertain to a novel method and apparatus to generate millimeter-wave signals with simple and/or low cost architecture. Simple millimeter-wave generation and dispersion-tolerant transmission is based on photonic mixing of two free-running lightwaves and... Agent: Zte (usa) Inc.

20120106974 - Formation of an optical waveguide: Technologies are generally described for an optical waveguide, methods and systems effective to form an optical waveguide, and an optical system including an optical waveguide. In some examples, the optical waveguide may include a silicon oxynitride region in a wall of the silicon substrate. The silicon oxynitride region may define... Agent: Empire Technology Development LLC

20120106975 - Power allocation in optical fiber transmission: Disclosed herein is a scheme for transmitting a composed optical signal 12b through an optical fiber arrangement 40. The transmitted composed optical signal 12b comprises one or several sidebands Sb1, Sbn each substantially centered around a subcarrier f1, fn, and an attenuated carrier signal ftb attenuated such that the composed... Agent: Telefonaktiebolaget L M Ericsson (publ)

20120106976 - Network interface device synchronization: Techniques are disclosed that relate to synchronizing a clock on a network interface device with a clock on an optical line terminal (OLT). In one example, the technique to synchronizing the clocks may include monitoring one or more instances when the network interface device transmits information to the OLT and... Agent: Calix, Inc.

20120106977 - System and method for communicating using visible light: A server device to transmit a message through a visible light communication, in which the server includes a visible light communication unit to transceive data through visible light communication; a message reception unit to receive a message; a message identification unit to identify a receiving object, a message type, and... Agent: Pantech Co., Ltd.

20120106978 - Methods and systems for high bandwidth optical communication: Methods and systems are provided for extending the range that a laser can transmit data, particularly in environments with high attenuation or turbidity. Particularly, an energy storing laser that is capable of continuously converting electrical energy to optical energy and storing the optical energy or the electrical energy in the... Agent: Lockheed Martin Corporation

20120106979 - Optical transmitter and optical transmission apparatus: An optical transmitter is disclosed. An optical modulator outputs an optical signal by modulating light being input, and has an optical absorption characteristic which changes a degree of optical absorption depending on a bias voltage being applied and includes a first characteristic region and a second characteristic region in which... Agent: Fujitsu Optical Components Limited

20120106980 - Controlled depolarization using chirp for mitigation of nonlinear polarization scattering: A coherent optical transmitter circuit is disclosed in which controlled chirp is employed, enabling the suppression of nonlinear polarization scattering in dual polarization coherent systems, such as those which employ dual polarization-quadrature phase-shift keying (DP-QPSK). By separately chirping the modulated signals of each polarization tributary signal, the polarization state of... Agent: Infinera Corporation

20120106981 - Laser driver and optical transmitter implementing the same: An LD-Driver with the push-pull arrangement is disclosed. The driver includes the high side driver driven by the positive phase signal and the low side driver driven by the negative phase signal. When the positive phase signal is in HIGH, the high side driver becomes ON and the LD driver... Agent: Sumitomo Electric Industries, Ltd.

20120106982 - Coherent optical receiver with adaptive equalizer initialization system: An adaptive-equalizer initialization system performs three functions: frequency offset estimation, taps estimation for chromatic dispersion filters, and taps initialization for an adaptive equalizer. The system contains hardware FFT and peak detector units that sense a pure tone that marks the beginning of a known, short data sequence.... Agent: Opnext Subsystems, Inc.

20120106983 - Optimized normalized least mean square phase estimation: Methods and systems for normalized least mean square phase estimation are shown that include receiving optical transmissions that include a modulated signal, determining a step size based on a signal-to-noise ratio (SNR) and a laser linewidth that provides a balance between convergence speed and precision, estimating phase error using the... Agent: Nec Laboratories America, Inc.

20120106984 - Optical chips and devices for optical communications: Optical devices are disclosed consisting of optical chips (planar lightwave circuits) which have optically symmetric or matching designs and properties and optical components which create asymmetry in the optical devices. The devices find application in detection in coherent and non-coherent optical communications systems.... Agent: