Optical communications inventions 08/09

20090214198 - Optical transmitter: A optical transmitter includes a light device provided a driving current and for emitting light on the bases of the driving current; a light measure for measuring an output light level of the light device; a controller for controlling the driving current to the light device and for changing the... Agent: Staas & Halsey LLP

20090214199 - Optical transmission system, node device, and gmpls control method: A node device according to the present invention includes an adjustment unit (GMPLS control unit) for, when an anomaly occurs on a route toward another node device, adjusting weighting of the route, and performs routing in Generalized Multi-Protocol Label Switching (GMPLS) control based on the adjusted weighting.... Agent: Nec Corporation Of America

20090214200 - tunable optical discriminator: There is provided a method and apparatus for tuning an optical discriminator to the carrier frequency of an optical signal to allow superior reception of said signal. The carrier frequency of the signal is dithered during a test phase in order to provide information that allows a subsequent tuning phase... Agent: Levenfeld Pearlstein, Llc Intellectual Property Department

20090214201 - Monitor circuit for monitoring property of optical fiber transmission line and quality of optical signal: An optical reception circuit generates optical electric field data by performing coherent reception of an optical signal transmitted via an optical fiber transmission line. An FIR filter filters the optical electric field data so that the optical signal is equalized. A quality monitor unit calculates the average value and the... Agent: Staas & Halsey LLP

20090214202 - Selecting wavelengths and routes in an optical network: Selecting a wavelength and a route includes facilitating communication through routes among nodes. Each route is associated with a plurality of wavelengths and comprises one or more segments that couple one node to another node. A polarization mode dispersion value is determined for each wavelength of each route to yield... Agent: Baker Botts L.l.p.

20090214203 - Method and system for automatic feedback control for fine tuning a delay interferometer: A method for receiving an optical signal is included where an ingress signal is split into a first portion and a second portion. A relative delay is induced between the first portion and the second portion, which are optically interfered to generate at least one interfered signal. Quality criteria of... Agent: Baker Botts L.l.p.

20090214204 - Optical network monitoring using amplifier modeling: Example embodiments include a method for monitoring an optical network. The method provides received network data to a network model, which determines if there is an inconsistency within the optical network. The network models include a statistical model and a detailed-physical model, both of which model amplifier physics.... Agent: Harness, Dickey & Pierce, P.L.C

20090214205 - Communications and data link jammer incorporating fiber-optic delay line technology: A communications and data link jamming system employs a fiber-optic RF delay line to provide rapid responses to threat signals. A sample of the RF signal threat environment is stored within the delay line, and a jamming video signal is added to the stored sample by modulation as it is... Agent: Klein, O'neill & Singh, LLP

20090214206 - Bandwidth allocation method, optical line terminator, subscriber station, communication system, and recording medium recording program of device: An exemplary object of the present invention is to accurately reflect allocation requests and increase the bandwidth use efficiency without requiring expensive and fast integrated circuits or CPUs in the control unit even in a large-scale system with a large number of terminal devices. A subscriber station comprises allocating means... Agent: Nec Corporation Of America

20090214207 - Packaging a reconfigurable optical add-drop module: A hermetically packaged, MEMS array-based ROADM module is disclosed. The enclosure sidewalls and a top lid are made of Kovar, and the base is made of alumina ceramic AuSn-soldered to the enclosure sidewalls. The MEMS array is attached to the ceramic base. The optics are passively pre-aligned using a removable... Agent: Teitelbaum & Maclean

20090214208 - Balanced bufferless switch: A high capacity distributed switching system comprises electronic edge nodes connected to a balanced bufferless switch which may be electronic or optical. The balanced bufferless switch comprises a balanced connector and a switch fabric. The balanced connector comprises an array of temporally cyclic rotator units having graduated rotation shifts and... Agent: Anderson Gorecki & Manaras LLP

20090214209 - Bandwidth allocation method, optical line terminator, optical network unit, communication system, and recording medium recording program of device: An object of the present invention is to increase the bandwidth use efficiency without requiring costly and fast integrated circuits or CPUs in the control unit even in a large-scale system with a large number of ONUs. An optical network unit includes an allocating unit that determines bandwidth allocation based... Agent: Nec Corporation Of America

20090214210 - 100 gbit/s ofdm optical signal generation: A method includes modulating lightwaves to provide first and second OFDM signal sidebands at a first polarization direction and first and second OFDM signal sidebands at a second polarization direction, and combining sidebands that are oppositely positioned and joined from the first and second OFDM signal sidebands at each polarization... Agent: Nec Laboratories America, Inc.

20090214211 - Apparatus of adjusting optical signal transmission timing: In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical... Agent: Mcdermott Will & Emery LLP

20090214212 - Method and device for channel-adapted signal transmission in optical networks: A method for optical data transmission in a wavelength multiplexing system having at least two transmission channels of different wavelengths includes determining at least one value which is a measure of a physical property of an optical data transmission path of the wavelength multiplexing system; and automatically adjusting a transmission... Agent: Darby & Darby P.c.

20090214213 - Modulation device for generating optical signal with quadruple frequency and method thereof: The present invention discloses a modulation device for generating an optical signal with quadruple frequency and the modulation method thereof. The modulation device in the present invention utilizes a commercial integrated modulator, a RF signal generator and a phase shifter to generate an optical signal with quadruple frequency. When the... Agent: Sinorica, Llc

20090214214 - Optical fiber transmission system with noise loading: A system and method for loading unutilized channels of a WDM system with noise to improve system performance. A transmitter amplifier may impart noise to unutilized channels by reducing amplifier input or providing feedback of the amplifier output. Noise signals may also be looped back to the transmitter from received... Agent: Tcm/gtpp

20090214215 - Electronic post-compensation of optical transmission impairments using digital backward propagation: Systems and method of compensating for transmission impairment are disclosed. One such method comprises: receiving an optical signal which has been distorted in the physical domain by an optical transmission channel; and propagating the distorted optical signal backward in the electronic domain in a corresponding virtual optical transmission channel.... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090214216 - Space-time division multiple-access laser communications system: A space-time division multiple-access (STDMA) laser communications (lasercom) system and related techniques. The STDMA system includes a plurality of remote nodes and an STDMA access node which uses precise electronic beam steering and beacons to provide access to each of a plurality of remote access nodes by means of both... Agent: Raytheon Company C/o Daly, Crowley, Mofford & Durkee, LLP

20090214217 - Optical device and a method for converting wdm signals into an otdm signal and vice versa: The invention relates to a device and a method for converting WDM signals into an OTDM signal. The device comprises shifting means (102, 103, 104) adapted to introduce a time shift between the pulses of the WDM signals carried by the optical carriers, modulation means (112, 113, 114) adapted to... Agent: Mcdonnell Boehnen Hulbert & Berghoff LLP

20090214218 - Optical buffer device: An optical buffer device includes plural optical memory elements that are capable of holding light and an optical delay element. The plural optical memory elements are arranged on an optical path through which signal light and control light propagate in mutually opposite directions. Further, the optical delay element is disposed... Agent: Moss & Burke, Pllc

20090214219 - Electronic apparatus: An electronic apparatus includes a housing that has a first concave section, a first emission unit that emits a laser beam into the first concave section, and a first modulator that modulates the laser beam emitted from the first emission unit in accordance with transmission information. The first emission unit... Agent: Moss & Burke, Pllc

20090214220 - Electronic device: The main power source unit of an image read-out device supplies power to an laser diode (LD) power supply unit of an electronic cassette through a contact. The LD power supply unit supplies the supplied power to a laser diode (LD), as power used for emitting laser light, and also... Agent: Moss & Burke, Pllc

20090214221 - Intelligent optical systems and methods for optical-layer management: An integrated optical transceiver includes an optical receiver that produces a first electrical signal at a reception electrical interface in response to a first optical signal, an optical transmitter that emits a second optical signal in response to a second electrical signal received at a transmission electrical interface, a first... Agent: Xin Wen

20090214222 - System and method for protecting an extended passive optical network: Extender apparatus for an optical network includes first and second extender units having an network-facing port for connection to a backhaul fiber and a subscriber-facing port for connection to a feeder fiber. Each extender unit includes a gain assembly and is operable selectively either in an enabled state, in which... Agent: Motorola, Inc. Law Department

20090214223 - Cmos-compatible tunable microwave photonic band-stop filter: According to one embodiment, a microwave photonic band-stop (MPBS) filter uses an electrical input signal to drive an optical Mach-Zehnder modulator. A modulated optical carrier produced by the modulator is applied to an optical filter having at least two tunable spectral attenuation bands that are located substantially symmetrically on either... Agent: Mendelsohn, Drucker, & Associates, P.c.

20090214224 - Method and apparatus for coherent analog rf photonic transmission: A system for high fidelity analog RF photonic communications is disclosed wherein linear phase modulation and linear coherent demodulation is included. A single optical beam with a phase-modulated signal optical carrier combined with an orthogonally polarized reference unmodulated optical carrier is transmitted simultaneously. At the receiver, the polarization of the... Agent: Celight, Inc.

20090214225 - Data transmission apparatus and data reception apparatus: A data communication system capable of controlling the brightness of light sensed by the human eye and quality communication using an illuminative light is provided. A PWM circuit 11 adjusts pulse width in conformity with a light intensity control signal corresponding to a desired light intensity, resulting in a PWM... Agent: Rader Fishman & Grauer Pllc

20090214226 - Optical dqpsk receiver and optical phase monitor apparatus for use in optical dqpsk receiver: First and second delay interferometers respectively have a phase-shift element. First and second photo detectors respectively detect optical signals output from the first and second delay interferometers. First and second data recovery circuits recover data from signals detected by the first and second photo detectors, respectively. A common adjustment unit... Agent: Staas & Halsey LLP

20090208200 - Synchronous optical signal generating device and synchronous optical signal generating method: A synchronous optical signal generation device includes: an optical phase detector that compares the phase of a reference optical signal with a phase of an optical beat signal to generate a phase error signal; a shaping mechanism that shapes the phase error signal; and a voltage controlled optical signal generator... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090208201 - Fast fault notifications of an optical network: A method and apparatus for fault notification in an optical network are described herein. In one embodiment, an exemplary process includes detecting at a node that at least a portion of a first unidirectional path of an optical circuit is down, where the first unidirectional path is originated from a... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090208202 - Method and device for complex analysis of optical spectrums: This invention relates to a device and associated process capable of obtaining the optical spectrum phase of an optical signal or test signal to be analyzed using techniques for heterodyning between two monochromatic spectral components simultaneously extracted from the test signal itself by means of stimulated Brillouin scattering.... Agent: Sughrue Mion, PLLC

20090208203 - Methods of restoration in an ultra-long haul optical network: A method includes receiving a restoration indicator associated with a path that includes an optical cross-connect (OXC). The OXC is reconfigured from a standby configuration to a restoration configuration in response to the restoration indicator. An optical signal received in a first direction at a first wavelength is optically regenerated... Agent: Mr. S. H. Dworetskt At&t Corp.

20090208204 - Passive optical network system: A passive optical network system according to the present invention includes an optical network unit and an optical line terminal connected to a plurality of optical network units. The optical line terminal has: an interface which receives from the optical network unit, a logical link assignment request message containing a... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090208205 - Photonic based cross-correlation homodyne detection with low phase noise: In one aspect, this document provides an implementation of a system for characterizing an oscillator. This system includes an input port that receives an oscillation signal from an oscillator under test; an input port signal splitter that splits the received oscillation signal into a first oscillation signal and a second... Agent: Fish & Richardson, PC

20090208208 - Method, apparatus and system for transmitting ethernet signals in optical transport network: A method, apparatus and system for transmitting Ethernet signals in an OTN are provided. The method may include: mapping the Ethernet signals to timeslot units, where a VCG composed of multiple OPUs is divided into the timeslot units; mapping the Ethernet signals into the OPUs, and then mapped into OTUs... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090208207 - System, method and computer readable medium for providing dual rate transmission on a gigabit passive optical network: In a dual rate gigabit passive optical network, an optical line termination (OLT) transmits a first rate (GPON) message frame interleaved with a second rate (NGPON) message frame. An unused ATM partition of the GPON message frame is provided with a header and payload portion of the NGPON message frame... Agent: Rg And Associates

20090208206 - Systems and methods for private network-to-network interface out-of-band signaling and path blocking: The present invention provides systems and methods to mix In-Band (IB) and Out-of-Band (OOB) signaling mechanisms under the Private Network-to-Network (PNNI) protocol for optical control plane connectivity. The present invention provides mechanisms for establishing and controlling OOB control plane communications. By default, the mechanisms treat all links as IB to... Agent: Clements Bernard PLLC

20090208209 - Reconfigurable optical filters formed by integration of electrically tunable microresonators: The present invention describes a microresonator that can be used as a 1:f variable coupler in a unit cell. It is described how a cascade of unit cells can be used to form a tunable, higher-order RF-filter with reconfigurable passbands. The disclosed filter structure can be utilized for the narrowband... Agent: O'connor & Company

20090208210 - Passive optical network remote protocol termination: A system, method, and node for extending the reach of a fiber-based access network. A Remote Protocol Termination (RPT) is implemented remotely from a central office Optical Line Termination (OLT). The RPT receives a data signal transmitted by a user's Optical Network Unit/Termination (ONU/T) over a Passive Optical Network (PON)... Agent: Ericsson Inc.

20090208211 - Optical communications network and intensity adjustment method for optical communications network: An optical communications network in which one optical line terminal is connected to multiple optical network units and in which code division multiplexing communication is carried out between the optical line terminal and the optical network units. The optical intensities of upstream optical signals transmitted from each optical network unit... Agent: Posz Law Group, PLC

20090208212 - Bidirectional wavelength-division-multiplexed passive optical network: Provided is a bidirectional wavelength division multiplexed passive optical network (WDM-PON) which includes a central office (CO) that transmits and receives multiplexed optical signals, a remote node (RN) that communicates with the CO, receives a multiplexed optical signal to demultiplex, and receives a demultiplexed optical signal to multiplex, an optical... Agent: Mcneely Bodendorf LLP

20090208213 - Code division multiplex signal receiving apparatus and code division multiplex transmitting and receiving system: In a code division multiplex transmitting and receiving system, the transmitting apparatus inserts a clock signal in the code division multiplex signal. The clock signal has a frequency equal to a null frequency in the frequency spectrum of the code division multiplex signal. The receiving apparatus extracts this frequency component... Agent: Rabin & Berdo, PC

20090208214 - Extinction ratio control using a frequency spread tone to modulate optical signal power levels: An optical transmitter that controls the extinction ratio by modulating a power level of an optical signal using a frequency spread tone. An electro-optic transducer driver generates an electrical signal that is to be converted into an optical signal. Meanwhile, a tone generator generates an electrical tone having a relatively... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090208215 - Method and device for stabilizing multi-channel optical signal wavelengths: A method for stabilizing multi-channel optical signal wavelengths includes the following steps. A first detecting signal is stacked on a plurality of driving signals in sequence. A plurality of optical signals generated after being driven by the plurality of driving signals is combined into one optical total signal. A wavelength... Agent: Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd)

20090208216 - Dispersion compensation: A dispersion compensation system comprises a detector for receiving an optical input signal and a compensator for processing the detector outputs and re-constituting the original signal. The detector generates at least two signals which depend on the instantaneous amplitude and frequency of the distorted signal in different ways, and the... Agent: Jacobson Holman PLLC

20090208218 - Method and apparatus for dispatching signals in an optical transport network: Methods and apparatuses for dispatching OTN signals are disclosed. The method includes receiving an OTN signal frame; determining in sequence whether each byte in the OTN signal frame is an overhead byte; determining, if the byte is an overhead byte, whether the byte includes frame alignment data; and assigning, if... Agent: Huawei Technologies Co., Ltd. C/o Darby & Darby P.C.

20090208217 - Radiation modulation by reflection from controlled composite material: Modulation of electromagnetic radiation is described in which an incident radiation beam is directed toward a surface of a composite material and at least partially reflects to form a reflected radiation beam. The composite material comprises an arrangement of electromagnetically reactive cells of small dimension relative to a wavelength of... Agent: Hewlett Packard Company

20090208219 - Multimode communications system: A multimode wireless communications system that uses the three mechanisms of light, radio and acoustic carriers either in combination or through selection of the most appropriate carrier.... Agent: Goodwin Procter LLP Attn: Patent Administrator

20090208220 - Systems and methods for generating rf pulses with reduced phase error: Systems and methods for generating RF pulses that have a reduced phase error are disclosed. The systems are optical based and thus are highly linear, so that phase errors, including jitter, are significantly reduced as compared to electrical RF pulse generation systems and methods. The optical-based RF pulse generation methods... Agent: OpticusIPLaw, PLLC

20090208221 - Optical space transmission system using visible light and infrared light: There are provided a first modulation section for performing low-speed digital modulation of first data; a second modulation section for performing high-speed digital modulation of second data; a first light transmitting section for emitting/quenching visible light in accordance with an output signal of the first modulation section to transmit a... Agent: Wenderoth, Lind & Ponack L.L.P.

20090208222 - Optical transceiver, its communication method, and communication system: An optical transceiver includes an optical transmission section that transmits an optical signal, an optical reception section that receives an optical signal, and a control section that controls the optical transmission section and the optical reception section. The control section optically communicates with an external device through the optical transmission... Agent: Nec Corporation Of America

20090208223 - Four wave mixing suppression: Methods, systems and computer program products for countering the effects of four wave mixing are described. In one implementation, a controller can be used to shift an operating wavelength of an optical transmitter away from a zero-dispersion wavelength through which signals of the optical transmitter are transmitted. The controller can... Agent: Fish & Richardson P.C.

20090208224 - Optical field receiver, optical multilevel signal receiver, and optical transmission system: An optical field receiver comprises an optical branching circuit for branching a received optical multilevel signal into first and second optical signals, a first optical delayed demodulator for performing delayed demodulation on the first optical signal at a delay time T (T=symbol time), a second optical delayed demodulator for performing... Agent: Mattingly & Malur, P.C.

20090208225 - Variable optical attenuator integration into transmitter optical subassemblies: A small-scale VOA system includes a polarization rotator, a voltage multiplier circuit, and at least one transistor. The polarization rotator can be positioned within a TOSA along the emission axis of a corresponding optical signal source in addition to one or more polarizers. A microcontroller provides a first low voltage... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090208226 - Bang-bang architecture: In one embodiment, the present invention includes an apparatus having a voltage controlled oscillator (VCO) to generate a first clock signal having a frequency controlled by a bias current coupling ratio of first and second bias currents, and a control circuit coupled to the VCO to generate a first pair... Agent: Trop, Pruner & Hu, P.C.

20090208227 - Optical apparatus and use method thereof for passive optical network system: An optical apparatus receives an upward signal light from a plurality of subscriber units, where the upward signal light is composed of a plurality of time slots corresponding to the plurality of optical subscriber units. The optical apparatus includes a driving unit configured to determine a respective required gain for... Agent: Staas & Halsey LLP

20090202237 - System and method for fault identification in optical communication systems: 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... Agent: Tcm/gtpp

20090202238 - Method for monitoring a passive optical network using monitoring units: 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... Agent: Harness, Dickey & Pierce, P.L.C

20090202239 - Service management channel for managing an optical networking service: 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... Agent: Guerin & Rodriguez, LLP

20090202240 - Systems and methods for parallel multi-core control plane processing: 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... Agent: Clements Bernard PLLC

20090202241 - Optical communication system and method for distributing content aboard a mobile platform during travel: 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... Agent: Orrick, Herrington & Sutcliffe, LLPIPProsecution Department

20090202242 - Passive optical network system, optical line terminator and, communication method of passive optical network system: 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... Agent: Brundidge & Stanger, P.C.

20090202243 - Direct detection for receiving polarization multiplexing signals: 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... Agent: Nec Laboratories America, Inc.

20090202244 - Bidirectional optical transceiver module using a single optical fiber cable: 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... Agent: Jacobson Holman PLLC

20090202245 - System and method for increasing upstream capacity in an optical network: 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... Agent: Baker Botts L.L.P.

20090202246 - Passive optical network communication system: 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... Agent: Rabin & Berdo, PC

20090202247 - Optical multiplexing/demultiplexing device: 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... Agent: Moss & Burke, PLLC

20090202248 - Wavelength division multiplexing system, method and device for its residual dispersion compensation: 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... Agent: Nixon Peabody LLP

20090202249 - Pon (passive optical network) station side apparatus, pon uplink line communication method, and program recording medium: 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... Agent: Nec Corporation Of America

20090202250 - Universal remote controller having home automation function: 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... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090202251 - Optical transmission/reception device: 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... Agent: Drinker Biddle & Reath (dc)

20090202252 - Optical communication module and method for using the same: 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... Agent: Mcginn Intellectual Property Law Group, PLLC

20090202253 - Optically isolated analog audio circuits: 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... Agent: Arent Fox LLP

20090202254 - Wide field-of-view amplified fiber-retro for secure high data rate communications and remote data transfer: 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... Agent: Arun K. Majumdar

20090202255 - Abstract optical receiver with automatic distortion cancellation: 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.... Agent: Fsp LLC

20090202256 - Laser package including semiconductor laser and memory device for storing laser parameters: 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... Agent: Applied Optoelectronics, Inc.

20090202257 - Optical transmission apparatus and system: 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... Agent: Nec Corporation Of America

20090202259 - Current mirror circuit and optical receiver circuit using the same: 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... Agent: Smith, Gambrell & Russell

20090202258 - Method for improving the performance of phase-modulated communication systems in an optical network: 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.... Agent: At& T Legal Department - Monka Attn: Patent Docketing

20090202237 - System and method for fault identification in optical communication systems: 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... Agent: Tcm/gtpp

20090202238 - Method for monitoring a passive optical network using monitoring units: 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... Agent: Harness, Dickey & Pierce, P.L.C

20090202239 - Service management channel for managing an optical networking service: 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... Agent: Guerin & Rodriguez, LLP

20090202240 - Systems and methods for parallel multi-core control plane processing: 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... Agent: Clements Bernard PLLC

20090202241 - Optical communication system and method for distributing content aboard a mobile platform during travel: 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... Agent: Orrick, Herrington & Sutcliffe, LLPIPProsecution Department

20090202242 - Passive optical network system, optical line terminator and, communication method of passive optical network system: 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... Agent: Brundidge & Stanger, P.C.

20090202243 - Direct detection for receiving polarization multiplexing signals: 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... Agent: Nec Laboratories America, Inc.

20090202244 - Bidirectional optical transceiver module using a single optical fiber cable: 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... Agent: Jacobson Holman PLLC

20090202245 - System and method for increasing upstream capacity in an optical network: 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... Agent: Baker Botts L.L.P.

20090202246 - Passive optical network communication system: 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... Agent: Rabin & Berdo, PC

20090202247 - Optical multiplexing/demultiplexing device: 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... Agent: Moss & Burke, PLLC

20090202248 - Wavelength division multiplexing system, method and device for its residual dispersion compensation: 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... Agent: Nixon Peabody LLP

20090202249 - Pon (passive optical network) station side apparatus, pon uplink line communication method, and program recording medium: 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... Agent: Nec Corporation Of America

20090202250 - Universal remote controller having home automation function: 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... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090202251 - Optical transmission/reception device: 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... Agent: Drinker Biddle & Reath (dc)

20090202252 - Optical communication module and method for using the same: 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... Agent: Mcginn Intellectual Property Law Group, PLLC

20090202253 - Optically isolated analog audio circuits: 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... Agent: Arent Fox LLP

20090202254 - Wide field-of-view amplified fiber-retro for secure high data rate communications and remote data transfer: 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... Agent: Arun K. Majumdar

20090202255 - Abstract optical receiver with automatic distortion cancellation: 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.... Agent: Fsp LLC

20090202256 - Laser package including semiconductor laser and memory device for storing laser parameters: 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... Agent: Applied Optoelectronics, Inc.

20090202257 - Optical transmission apparatus and system: 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... Agent: Nec Corporation Of America

20090202259 - Current mirror circuit and optical receiver circuit using the same: 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... Agent: Smith, Gambrell & Russell

20090202258 - Method for improving the performance of phase-modulated communication systems in an optical network: 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.... Agent: At& T Legal Department - Monka Attn: Patent Docketing

20090196598 - Optical source link transmission device and method: An optical source link transmission device includes a sending end module and a receiving end module. A master optical source link, a backup optical source link, a master data channel, and a backup data channel are integrated into the sending end module; and a master receiving link and a backup... Agent: Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd)

20090196599 - Dispersion compensator, and dispersion compensating method: A dispersion compensator (10) that compensates dispersion occurring in an optical pulse includes a spatial filter (100) from which a pulsed light having a single peak is emitted as an autocorrelation light when a light having a strong correlation with an optical pulse to be dispersion-compensated is introduced into the... Agent: Wenderoth, Lind & Ponack, L.L.P.

20090196600 - Optical transmission module: Provided is an optical transmission module that includes: a semiconductor light emitting element for emitting laser light; a first driving unit for providing a first driving current to the semiconductor light emitting element; a switching unit connected between the semiconductor light emitting element and the first driving unit; and a... Agent: Fildes & Outland, P.C.

20090196601 - Alarm surveillance for cascaded optical access: A system and method is disclosed that allows real-time processing of child OPOI and rider service alarms from a parent OPOI which determines if one or more STS alarms are associated with a rider service, a child OPOI, or a parent OPOI. The system and method performs in real-time processing... Agent: At & T Legal Department - Canavan

20090196602 - Adjustable bit rate optical transmission using programmable signal modulation: Techniques, apparatus and systems to provide adjustable bit rate optical transmission using programmable signal modulation in optical communication systems.... Agent: Fish & Richardson, PC

20090196603 - Method for lightpath monitoring in an optical routing network: A method and system for enabling lightpath monitoring in an optical network is disclosed. A single polarization modulator/scrambler introduces a pilot tone signal as an overlay on a plurality of optical signals on a source node and a performance monitoring unit detects the pilot tone signal to enable light path... Agent: At& T Legal Department - Monka Attn: Patent Docketing

20090196604 - System for combining high-definition video control signals for transmission over an optical fiber: An apparatus and method are provided for combining, transmitting and receiving two or more high definition video control signals, namely, DDC and HDCP over a single bi-directional optical fiber or a duplex optical fiber, wherein a source and a sink are in communication with each other through the apparatus, and... Agent: Bruce H. Johnsonbaugh Eckhoff & Hoppe

20090196605 - Communications system with symmetrical interfaces and associated methods: A communications system includes a physical layer device (PLD) and a logical link device (LLD), each having respective send and receive interfaces being substantially identical to define symmetrical interfaces for the system. Accordingly, design and manufacturing is simplified compared to conventional systems. In addition, advantages are also provided in terms... Agent: Ryan, Mason & Lewis, LLP

20090196606 - Optical access network and optical switching systems: An optical access network and optical switching systems requiring no frame delay process on an optical switchboard are disclosed. Plural ONUs are connected to user terminals. An OLT communicates with an IP network through an access gateway. An optical switching unit (OSW) connects the ONUs and the OLT by switching... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090196608 - Optical node device, network control device, maintenance-staff device, optical network, and 3r relay implementation node decision method: An economical optical network is constituted by effectively using network resources by using the minimum number of, or minimum capacity of 3R repeaters. 3R section information corresponding to topology information on the optical network to which an optical node device itself belongs is stored, and the 3R section information stored... Agent: Harness, Dickey & Pierce, P.L.C

20090196607 - Optical packet switching apparatus and optical packet switching method: An apparatus has a plurality of transmitters for transmitting optical packet signals having wavelengths; a multiplexer for multiplexing the optical packet signals transmitted by the plurality of transmitters; a packet scheduler controlling a timing at which each of the transmitters transmits the optical packet signal; and an assister for controlling... Agent: Staas & Halsey LLP

20090196609 - Optical communication apparatus and optical lan system: The invention provides an optical communication apparatus and optical LAN system capable of either avoiding or reducing the adjustment difficulty during the busy traffic while suppressing the system enlargement. The optical LAN system 100 comprises optical communication apparatuses (hereinafter, referred to as “node.”) 1a˜1x, an optical multiplexing-branching means 2, and... Agent: Berenato, White & Stavish, LLC

20090196610 - Optical reception apparatus compatible with dqpsk polarization multiplexing format: In the optical reception apparatus, a DQPSK polarization multiplexed signal light (S) input thereto is split into horizontally/vertically polarized signal lights (SH, SV) by a polarization beam splitter (3), and the signal lights (SH, SV) each is branched into two by each of optical couplers (4H, 4V). Then, one branched... Agent: Staas & Halsey LLP

20090196611 - Method and system for providing a return path for signals generated by legacy terminals in an optical network: A return path system includes inserting RF packets between regular upstream data packets, where the data packets are generated by communication devices such as a computer or internet telephone. The RF packets can be derived from analog RF signals that are produced by legacy video service terminals. In this way,... Agent: Smith Frohwein Tempel Greenlee Blaha, LLC

20090196612 - Optical modulation method and system in wavelength locked fp-ld by injecting broadband light source using mutually injected fp-ld: The present invention relates to an optical modulation method and optical modulation system of a wavelength locked Fabry Perot-Laser Diode (FP-LD) by injecting a broadband light source (BLS) using mutual injection of FP-LDs. More specifically, the present invention relates to a novel modulation technology which embodies a wavelength locked FP-LD... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090196614 - Acousto-optic filter and optical cdma system using the same: Provided are an acousto-optic filter and an optical code division multiple access (CDMA) system using the acousto-optic filter. The acousto-optic filer includes: an acousto-optic mode converter (AOMC) converting an optical signal of a specific optical frequency corresponding to a frequency of an electric signal of an optical signal of a... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090196613 - Method and device for modulating the light emission of a lighting device: The invention relates to controlling a lighting device, particularly to the modulation of light generated by a solid state lighting (SSL) device. The invention provides a method and device for modulating the light emission of a lighting device by keying each pulse (14) of a sequence of pulses (16) contained... Agent: Philips Intellectual Property And Standards

20090196615 - Dispersion mapping of transmitted channels in a wdm system: Chromatic dispersion is determined based on the arrival times of different frames of data in a wavelength division multiplexed (WDM) system having an optical communication link. Namely, a first frame is transmitted on a first optical channel, which is supplied to the optical communication link. A second frame is then... Agent: Infinera Corporation

20090196616 - Wavelength division multiplexing module: A telecommunications module includes an optical wavelength division multiplexer/demultiplexer configured to demultiplex a first optical signal input into the telecommunications module into a plurality of different wavelengths, a fiber optic splitter configured to split a second optical signal input into the telecommunication module into a plurality of optical signals, and... Agent: Merchant & Gould PC

20090196617 - Single core bidirectional optical device: A single core bidirectional optical device having a light emitting element that is provided on the terminal of one optical fiber and makes light incident to the optical fiber, and a light receiving element for receiving light of the optical fiber, comprises a wavelength multiplexing/demultiplexing coupler that is provided on... Agent: Fujitsu Patent Center C/o Cpa Global

20090196618 - Optical network element with brillouin effect colorless wavelength shift: A method of optical communication includes generating an amplified optical signal from at least a portion of a first optical signal having a first carrier wavelength, λ1. The amplified optical signal is applied to Brillouin media to stimulate generation of a Brillouin effect signal at a wavelength λ2. The Brillouin... Agent: Davis & Associates

20090196619 - Systems and methods for optical carrier recovery: In one embodiment a system and method pertain to generating a pump from a received optical signal, inputting the generated pump into a phase-sensitive oscillator, and amplifying a carrier component of the pump to generate an optical carrier having the same phase and polarity of an optical carrier of the... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090196621 - Fiber-optic to usb ethernet converter: A fiber-optic to USB Ethernet converter includes fiber-optic jacks for connecting to optical cables; a USB connecting end for plugging into a USB connector on a computer device; a USB-Ethernet converting module for converting USB serial electric signal format into Ethernet electric signal format and Ethernet electric signal format into... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20090196620 - Storage device, storage device array, and data processing system: A storage device includes a storage section, a first control section, a communication section, a second control section and a wireless transmission and reception section. The storage section stores data. The first control section controls reading and writing the data from and into the storage section. The communication section transmits... Agent: Fildes & Outland, P.C.

20090196622 - Reconnection method in peripheral interface using visible light communication: A reconnection method and device for a peripheral interface using VLC provide a protocol for when a communication link between a primary device and a secondary device is disconnected. The primary device generates an R-XID message including reconnection information and a warning indication signal indicating the disconnection. The secondary device... Agent: Cha & Reiter, LLC

20090196623 - System and method for free space micro machined optical bench: An Optical bench communicates light through free space in a plurality of trenches formed in the bench, each of the trenches formed by deep ion reactive etching and defined by two opposing side walls, such that the free space is between the opposing side walls. An exemplary embodiment has a... Agent: Honeywell International Inc. Patent Services

20090196625 - Optical transceiver module having a latching bail mechanism that uses a cam lock configuration: An optical transceiver module is provided that has a pivoting bail latching mechanism that is extremely stiff and locks via a cam locking configuration rather than relying on spring-loading forces to bias the latching mechanism to and maintain the latching mechanism in a desired position. The stiffness of the pivoting... Agent: Kathy Manke Avago Technologies Limited

20090196624 - Photosensor operating point: The subject matter disclosed herein relates to determining a photosensor operating point.... Agent: Applied Optoelectronics, Inc.

20090196626 - Receiver optical sub-assembly and optical receiver module: A receiver optical sub-assembly includes a multilayered ceramic substrate mounted on an electrically conductive base. The multilayered ceramic substrate has a ground layer on the front surface. A light receiving element is mounted on the front surface of the multilayered ceramic substrate. A cap and the electrically conductive base enclose... Agent: Staas & Halsey LLP

20090196627 - Distributed driver and can bus communication protocol: A system and a method for internal communication in a lighting system, which lighting system comprises a computer for controlling the lighting system, in which system a number of motors or actuators are controlled by the computer system, which motors or actuators control the operation of light effect components in... Agent: Roberts Mlotkowski Safran & Cole, P.C. Intellectual Property Department

20090196628 - Optical transmitting module and optical transmitting device: An optical transmitting module of a coaxial type is provided in which a disturbance in a waveform of light which is output from a semiconductor laser element due to a signal which is output from an optical modulator unit can be suppressed. The optical transmitting module comprises an optical transmitting... Agent: Mcdermott Will & Emery LLP

20090196629 - Distortion compensation circuit and method based on orders of time dependent series of distortion signal: A distortion compensation circuit compensates for distortion generated by one or more non-linear elements such as a laser device. The distortion compensation circuit may be used in an optical transmitter, such as a laser transmitter used for forward path CATV applications. The distortion compensation circuit may include a primary signal... Agent: Applied Optoelectronics, Inc.

20090196630 - Distortion compensation circuit including one or more phase invertible distortion paths: A distortion compensation circuit compensates for distortion generated by one or more non-linear elements such as a laser device and may include a primary signal path for carrying an input signal and one or more secondary signal paths for generating distortion. The distortion compensation circuit may also include one or... Agent: Applied Optoelectronics, Inc.

20090196631 - Monolithic power monitor and wavelength detector: Monolithic single and/or dual detector structures are fabricated on the emitting surface of a VCSEL and/or on a lens or glass substrate configured to be positioned along the axis of emission of an optical light source. Each monolithic detector structure includes one or two PIN detectors fabricated from amorphous silicon... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090196632 - Optical burst receiver and method: The present invention allows a configuration with elements inside the LSI, the elimination of manpower by using automatic adjustment, a reduction in the manufacturing cost, and control of the duty ratio in a wide temperature range and a wide dynamic range and includes: a TIA that converts an optical burst... Agent: Nec Corporation Of America