Optical communications inventions 12/07

20070297795 - Bidirectional optical communication system: A bidirectional optical communication system employing a living line and a standby line. One of a master unit and a slave unit has a photoswitch for switching between the living line and the standby line and the other has a photocoupler for collecting the living line and the standby line.... Agent: Day Pitney LLP

20070297796 - Method and arrangement for the optical transmission of data signals via differential phase modulation in a polarization multiplex method: Two data signals are subjected to a binary differential phase modulation and transmitted as POLMUX multiplex signals. The types of modulation are selected in such a way that they are orthogonal in relation to each other and do not influence each other during the demodulation of the signals. There is... Agent: Siemens Corporation Intellectual Property Department

20070297797 - Byte-wide optical backplane switch: A byte-wide optical switch and switching method are provided. The optical switch includes a first set of ports for receiving in parallel an optical byte of data, and multiple second sets of ports each capable of outputting in parallel the optical byte of data. An array of optical switching elements... Agent: Heslin Rothenberg Farley & Mesiti P.C.

20070297798 - Byte-wide optical backplane switching method: A byte-wide optical switch and switching method are provided. The optical switch includes a first set of ports for receiving in parallel an optical byte of data, and multiple second sets of ports each capable of outputting in parallel the optical byte of data. An array of optical switching elements... Agent: Heslin Rothenberg Farley & Mesiti P.C.

20070297799 - Router having dual propagation paths for packets: A router comprising an interface module (IM), having an optical path and an electrical path and a speed sensor coupled between an input of the router and an input of the IM. The speed sensor is adapted to receive a packet and detect a speed of the IM connection and... Agent: At&t Corp.

20070297800 - Wavelength division multiplexing passive optical network system: The present invention relates to a Wavelength Division Multiplexing (WDM) Passive Optical Network (PON) system and a multi-ring type WDM PON system. The WDM PON system is implemented to appropriately compensate signals that are transmitted and received between an optical communication line and the multiplexer/demultiplexer of a Central Office (CO).... Agent: Cantor Colburn, LLP

20070297801 - Dwdm transport of catv and digital signals over optical fiber in low-dispersion spectral regions: Methods and apparatus are described for DWDM transport of CATV and digital signals over optical fiber in low-dispersion spectral regions. A method includes transporting a plurality of optical carriers of different wavelengths over an optical link using wavelength division multiplexing, the optical link including a plurality of optical segments. The... Agent: John Bruckner, P.C.

20070297802 - Optical transmission equipment and optical add-drop multiplexer: An optical add-drop function part of an optical add-drop multiplexer has an output end of transmitted light signal in which an optical termination mechanism formed by an optical detector for detecting open of an optical fiber, an optical switch, and an optical terminator are mounted. Further, a reflection level calculation... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070297803 - In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment: A distortion circuit is provided for correcting the distortion from a nonlinear circuit element by generating a frequency dependent signal having a sign opposite to the distortion signal produced by the nonlinear circuit and substantially the same magnitude. The distortion circuit includes an input signal and a first nonlinear device... Agent: Casey Toohey Emcore Corporation

20070297804 - High-speed dispersion compensation control apparatus: An optical signal, which is a low-speed signal superimposed on a high-speed phase modulated optical signal by intensity modulation, is used. In an optical receiver apparatus 40, a received signal is split, and one of the split signals is O/E converted and low frequency component alone is extracted via a... Agent: Staas & Halsey LLP

20070297805 - Optical communication system with cats-eye modulating retro-reflector (mrr) assembly, the cats-eye mrr assembly thereof, and the method of optical communication: An optical communicating system and method thereof includes first and second terminals. The first terminal has a transmitter for transmitting an interrogating light beam and a receiver for receiving the interrogating light beam. The second terminal has a cats-eye modulating retroreflector (MRR), which includes a modulator for modulating the interrogating... Agent: Naval Research Laboratory Associate Counsel (patents)

20070297806 - System and method for receiving coherent, polarizaztion-multiplexed optical signals: An apparatus, a polarization diversity receiver and a method of receiving a received optical signal. In one embodiment, the apparatus includes: (1) an optical device configured to separate in-phase and quadrature components of a received optical signal, to transmit the in-phase components to a first optical output thereof and to... Agent: Hitt Gaines, PC Alcatel-lucent

20070297807 - Noise mitigation in analog optical transmission systems using polarization scrambler: The present invention is directed towards systems and methods that include an optical polarization scrambler or depolarizer after the optical transmitter. In this manner, the optical signal is depolarized. Accordingly, the noise peaks that were translated from Guided Acoustic-Wave Brillouin Scattering (GAWBS) by the devices with polarization dependent loss or... Agent: Scientific-atlanta, Inc. Intellectual Property Dept.

20070297808 - Establishment and maintenance of optical links between optical transceiver nodes in free-space optical communications networks: A system and method for establishing and maintaining optical links between optical transceiver nodes in a free space optical communications network is disclosed. The system and method provide a protocol for acquisition of an optical link between transceivers in two adjacent nodes and for re-acquisition should a node be replaced... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

20070297809 - Optical transmission/reception equipment and optical transmission/reception module: The present invention provides a method for connecting an optical transmission/reception module and a circuit board in order to reduce electrical crosstalk effectively in single-fiber bidirectional optical transmission/reception equipment. The optical transmission/reception equipment includes an optical transmission/reception module which has at least one transmission subassembly with a built-in light-emitting device,... Agent: Fish & Richardson P.C.

20070297810 - Antisqueezed light generator: An antisqueezed light generator system is built with only the components for optical communications with long-term reliability. A cw-LD light is made pulses by an intensity modulator and amplified by an optical amplifier. The amplified optical pulses are made short by high-order soliton pulse compression effect at a first optical... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070297812 - Comparing circuit and infrared receiver: A comparing circuit of the present invention includes: a charging and discharging circuit to charge a capacitor with charging current and discharge the capacitor with discharging current alternately in response to a switch of an input pulse signal; a comparator circuit to compare a capacitor-voltage (Csig) of the capacitor with... Agent: Birch Stewart Kolasch & Birch

20070297811 - Infrared receiver, infrared bridge device and methods for use therewith: An infrared data receiver includes an infrared detector for generating a received signal from an infrared input signal. A sampling module generates a sequence of sampled data from the received signal. A plurality of processing modules are included, wherein each processing module is capable of detecting and decoding data in... Agent: Garlick Harrison & Markison

20070297813 - Optical receiving device: An optical receiving device for receiving an optical signal (60) from a signal collector (50) comprising a detector (40) for receiving the optical signal (60) form the collector (50) and a signal mask (45) having an aperture (47) through which at least a portion of the signal (65) passes, said... Agent: Dickstein Shapiro LLP

20070292131 - Methodes and processes of all-optical switching of optical data packets: A self-routing switching methods that allows to direct optical packet based on the information of the packet header.... Agent: Slobodyanyuk Volodymyr

20070292128 - Virtual protection channel for fiber optic ring network: A single, normally inactive, protection channel provides protection against transponder failure in a fiber optic ring network. The protection channel is established and put into operation by a series of steps that are triggered by the detection of loss of light from one transponder by the other transponder. Each node... Agent: Welsh & Katz, Ltd

20070292129 - Method and node apparatus for traffic protection in optical transport network: Disclosed is a method and node apparatus for traffic protection of Optical Transport Network (OTN), including: setting a part of channels in one fiber as working channels used for carrying traffic in need of protection, and setting a part of channels in the other fiber with a reverse transmission direction... Agent: Marshall, Gerstein & Borun LLP

20070292130 - Optical communication network and component therefore: A component for an optical communication network comprises a source (6) for an optical communication signal, an output port (11) for outputting the optical communication signal on an optical transmitting fiber (1), a light sensor (14; 15) and an optical circulator (9) for transmitting the optical communication signal from the... Agent: Coats & Bennett, PLLC

20070292132 - Passive optical network and data communication method thereof: A Passive Optical Network includes: an Optical Line Terminal, an Optical Distribution Network, and an Optical Network Unit or an Optical Network Terminal, wherein the Optical Line Terminal is adapted to exchange data with the Optical Network Unit or the Optical Network Terminal by using an optical module via the... Agent: Robert Popa C/o Ladas & Parry LLP

20070292133 - System and method for communicating optical signals to multiple subscribers having various bandwidth demands connected to the same optical waveguide: The present invention is generally drawn to optical network architecture that can include a multi-subscriber optical interface that can service a plurality of subscribers that are located in close proximity relative to one another. For example, the multi-subscriber optical interface can service multiple dwelling units such as an apartment complex... Agent: King & Spalding LLP

20070292134 - Unknown: The invention relates to a circuit structure for a transmission network node for transmitting high bit-rate, IP-based time division-multiplexed signals, especially for an optical Multi-Gigabit Ethernet, with a bidirectional west-side and a bidirectional east-side remote port, wherein on the west-side remote port a west-side receive time division-multiplexed signal is received... Agent: The Culbertson Group, P.C.

20070292135 - Integrated remote control signaling: A serial transmission protocol and architecture are provided that can be used to forward remote control data between sink (e.g., DTV) and source (e.g., DVD player) devices, in addition to other data such as video and/or audio or other payload. The target device need not be in the line of... Agent: Fenwick & West LLP

20070292137 - Redundant transponder array for a radio-over-fiber optical fiber cable: A redundant transponder array for a radio-over-fiber (RoF) optical fiber cable is disclosed. The redundant transponder array includes two or more transponders having an antenna system. The antenna system has first and second antennas adapted to form first and second substantially co-located picocells when operated at respective first and second... Agent: Corning Cable Systems LLC

20070292136 - Transponder for a radio-over-fiber optical fiber cable: The invention is a transponder for a radio-over-fiber (RoF) optical fiber cable. The transponder includes a converter unit made up of an electrical-to-optical (E/O) converter and an optical-to-electrical (O/E) converter. The optical fiber cable optically couples the converter unit to a head-end unit that sends and receives optical RF signals.... Agent: Corning Cable Systems LLC

20070292138 - Power supply: A device includes a power module to produce a switched voltage and to convert the switched voltage into a waveform adapted to wirelessly pass through a structure. The device may include a data module to receive a wireless signal through the structure, where the wireless signal includes information, and to... Agent: Verizon Patent Management Group

20070292139 - Receiving method and receiving circuit: A receiving method according to the present invention adjusts a level of an output voltage signal by switching a gain to be used for converting an inputted current signal to a voltage signal, in a preamplifier. Performing offset compensation on the output voltage signal in an offset compensator, in a... Agent: John S. Pratt, Esq Kilpatrick Stockton, LLP

20070292140 - Phase control apparatus and optical dqpsk receiver: A calculation processing unit controls temperature of a Peltier device based on a slope of a waveform obtained by subtracting a waveform of a B-arm monitoring signal from a waveform of an A-arm monitoring signal and a value obtained by subtracting a value B of the B-arm monitoring signal from... Agent: Staas & Halsey LLP

20070292141 - Optical signal transmitter and optical wireless communications network using it: An optical wireless communications network connects a plurality of communication cells, which are defined by dividing a local communication area, for enabling optical wireless communication in each of the communication cells. An optical signal transmitter is installed in each communication cell for irradiating the cell with a data-modulated optical signal... Agent: Cha & Reiter, LLC

20070292142 - Method for generating carrier residual signal and its device: A method for generating a carrier residual signal and its device, in which a heterodyne optical signal used in a photometric field or an optical fiber radio communication field can be stably generated with a simplified structure. The device includes an optical modulating unit that includes a light source generating... Agent: Chapman And Cutler

20070292143 - Optical re-modulation in dwdm radio-over-fiber network: An apparatus includes multiple signal paths for optically converting an optical signal to multiples of the optical signal at different respective carrier frequencies for reducing interference between wireless transmissions of the multiples of the optical signal. Preferably, the converting includes a first modulator for modulating the optical signal into a... Agent: Nec Laboratories America, Inc.

20070292144 - Coupler of duality modulated radiation and related method: A generator of duality modulated radiation, of which the irradiance, the wave intensity, or both, are varied from ordinarily equivalent levels, either for purposes of providing energy depleted or energy enriched radiation or for purpose of encoding an information signal. Various techniques are disclosed for restoring irradiance levels to “ordinary”... Agent: Noel F. Heal

20070286599 - Centralized optical-fiber-based wireless picocellular systems and methods: The centralized optical-fiber-based wireless picocellular system includes one or more service units at a central head-end station. The one or more service units are optically coupled to one or more transponders via respective one or more optical fiber RF communication links. The transponders are each adapted to provide within the... Agent: Corning Cable Systems LLC

20070286600 - Universal ir repeating over optical fiber: Infrared control signals are repeated and communicated in a system including a source device and a sink device that are communicatively coupled by a serial communication link that includes a forward channel and a backward channel. Modulated infrared remote control data is detected by an infrared detector without de-modulation, and... Agent: Fenwick & West LLP

20070286601 - Optical transmission system, optical receiver, and its gain adjustment method: An optical transmission system comprises master unit and remote unit, the master unit includes optical transmitter transmits the optical signal to the optical fiber at a fixed averaged output level, the remote unit includes optical receiver receives optical signal via optical fiber, and optical receiver includes light receiving element converts... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070286603 - Optical multiplex communication system and delay quantity adjustment method: The present invention is an optical multiplex communication system in which an optical wavelength division channel and an optical code division channel can coexist, wherein a WDM channel section 86 has a wavelength demultiplexer 36 and WDM channels W1 to W4. An optical pulse string 83-3 is demultiplexed by the... Agent: Venable LLP

20070286604 - Fully optical device for breaking down the dynamic range of an optical signal and system for measuring the signal using the device: e

20070286605 - Tunable bidirectional multiplexer/demultiplexer for optical transmission system: A tunable bidirectional multiplexer/demultiplexer (MUX/DEMUX) is disclosed for adding and dropping wavelength channels between an optical transmission system and at least one optical transceiver. The MUX/DEMUX includes at least one add port for adding wavelength channels to the optical transmission system, at least one drop port for dropping wavelength channels... Agent: At&t Corp.

20070286602 - Byte-wide optical backplane switching method: A byte-wide optical switch and switching method are provided. The optical switch includes a first set of ports for receiving in parallel an optical byte of data, and multiple second sets of ports each capable of outputting in parallel the optical byte of data. An array of optical switching elements... Agent: Heslin Rothenberg Farley & Mesiti P.C.

20070286606 - Method of operating and optimising a wdm transmission system and computer program product: b) setting or adjusting a tuneable dispersion post-compensation value at a receiver-side Tuneable Dispersion Compensation Module (7) in operative connection with the receiver to a second value (POST°) in order to optimise at least one characteristic (monitored performance like BER, eye opening, Q factorBER) of a transmitted signal at the... Agent: Sughrue Mion, PLLC

20070286607 - Low total excursion dispersion maps: A process optically transports digital data over an all-optical long-haul communication path. The process includes transporting digital optical data signals at a selected bit rate and a selected wavelength over a sequence of transmission spans. The sequence includes 70 percent or more of the spans of the long-haul all-optical communication... Agent: Hitt Gaines, PC Alcatel-lucent

20070286608 - Optical fm source based on intra-cavity phase and amplitude modulation in lasers: A fiber optic communication system comprising: an optical signal source adapted to receive a binary base signal having a bit period T, and generate a first signal, wherein the first signal is frequency modulated; and an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal,... Agent: Mark J. Pandiscio Pandiscio & Pandiscio, P.C.

20070286609 - Bias circuit for burst-mode/tdm systems with power save feature: An optic signal transmit system and biasing method and apparatus and system is disclosed to reduce power consumption during non-transmit periods. An optic signal generator receives a bias signal and an outgoing signal. A burst/transmit enable signal enables the transmit system into transmit mode, such as during a transmit window... Agent: Weide & Miller - Mindspeed

20070286610 - Method for distinguish failure modes in an apc circuit and an optical transmitter using the same: The present invention provides an optical transmitter that enables to distinguish failure modes of the auto-power control (APC) of the laser diode (LD). The transmitter provides the APC circuit comprised of the driver for supplying the driving current, the LD, the PD for monitoring a portion of the output light... Agent: Smith, Gambrell & Russell

20070286611 - Transimpedance (tia) circuit usable for burst mode communications: A transimpedance amplifier (TIA) circuit usable for burst mode communications is provided. The TIA circuit includes a TIA stage, a limiter-amplifier, and a DC restoration loop. The invention overcomes problems of the prior art relating to burst communications, such as a DC level in the output signal which can change... Agent: Nath & Associates, PLLC

20070286612 - Deskew device and deskew method: In a receiver, a skew detector detects a skew between two synchronization symbols having different wavelengths among synchronization symbols included in received signals. A skew rough adjustment calculator calculates a delay compensation amount for each received signal based on the skew and a signal delay characteristic in a transmission path.... Agent: Staas & Halsey LLP

20070280681 - Multi-channel protection switching systems and methods for increased reliability and reduced cost: The present invention provides multi-channel protection switching systems and methods for increased reliability and reduced cost. Advantageously, the multi-channel protection switching systems and methods of the present invention use pre-FEC rate measurements, and changes in pre-FEC rate measurements, to detect and avoid potential link failures before they occur. The multi-channel... Agent: Clements Walker

20070280683 - Method as a pre-condition for a gain control, optical access network, central station and terminal: The invention concerns a method as a pre-condition for a gain control of an optical amplifier that amplifies a whole signal out of a multiple of optical signals and where each of these signals includes regular gaps, in which these optical signals are synchronized with respect to each other such... Agent: Sughrue Mion, PLLC

20070280686 - Network configuring apparatus: An optical wiring switching unit includes a first connection interface. A packet switch includes a second connection interface. A resource includes a third connection interface, and is formed with at least one of a server and a storage device. A control device controls the optical wiring switching unit to perform... Agent: Katten Muchin Rosenman LLP

20070280687 - Method and system for power management in optical networks: Methods and apparatus for optical-power control in an optical network employing wavelength-division multiplexed (WDM) optical-fiber links are devised to circumvent the effect of crosstalk caused by optical-power scattering. Each carrier signal is amplitude-modulated by an identifying tone, with the power of an identifying tone having a predetermined ratio to the... Agent: Victoria Donnelly

20070280690 - System and method for managing power in an optical network: In accordance with the teachings of the present invention, a method for distributing traffic in a distribution node in an optical network includes receiving wavelength division multiplexed (WDM) traffic in a plurality of wavelengths at at least one of a plurality of filters at the distribution node from at least... Agent: Baker Botts L.L.P.

20070280691 - System and method for transmitting traffic in a plurality of passive optical networks: In accordance with the teachings of the present invention, a system and method for transmitting traffic in a plurality of passive optical networks (PONs) is provided. In a particular embodiment, a method for transmitting traffic in a plurality of passive optical networks (PONs) includes transmitting traffic at a first wavelength... Agent: Baker Botts L.L.P.

20070280692 - Coherent gated receiver: The present invention is directed to a coherent gated receiver. The receiver includes a decoder operable to receive an optical signal and generate a decoded optical signal, the decoder comprises a demultiplexer operable to spatially distribute the optical signal, a phase mask operable to decode the spatially distributed optical signal,... Agent: Telcordia Technologies, Inc.

20070280682 - Limited perimeter vector matching fault localization protocol for survivable all-optical networks: The inventive Limited perimeter Vector Matching fault localization method and system is launched when alarming sinks are identified. Each alarming sink broadcasts its node ID and path length, and all nodes compare their paths to identify an executive sink, which creates an Affected Link Vector consisting of the links in... Agent: Ladas & Parry

20070280684 - Loss-of-signal detecting device: The invention relates to an optical transmitting device. Particularly, the invention provides a loss-of-signal detecting device that detects a loss of an optical signal received by a terminal station or a relay station, in the order of an SD and an SF. The loss-of-signal detecting device includes: an optical input... Agent: Staas & Halsey LLP

20070280685 - Method of optimising connection set-up times between nodes in a centrally controlled network: In one aspect, a method of optimizing connection set-up times between nodes in a centrally controlled network comprises sending a path set-up request from a node to a controller is provided If a connection cannot be made at a requested time, not sending a no acknowledgment message, but only and... Agent: Siemens Corporation Intellectual Property Department

20070280688 - Upgradeable optical hub and hub upgrade: An upgradeable optical hub and hub upgrade can be provided. The upgradeable hub can separate an incoming signal into various components and provide a segment of the incoming signal to a port for a hub upgrade. The hub can drop, for example, four channels to four external nodes. Hub upgrade... Agent: Squire, Sanders & Dempsey L.L.P.

20070280689 - Method and device for stabilizing the state of polarization of a polarization multiplexed optical radiation: A device and method for stabilizing the polarization of polarization multiplexed optical radiation includes an identified channel which is provided with a pilot signal. The device and method are based on providing to the polarization multiplexed optical radiation a controllable polarization transformation; measuring the optical power of a polarized portion... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070280693 - Sensor array for perimeter defense: An intensity modulated broadband optical signal source is arranged to produce optical signals in a plurality of wavelength bands. A demultiplexer/multiplexer pair receives optical signals from the optical signal source and produces a separate optical signal for each wavelength band. An optical coupler is arranged to receive the separate optical... Agent: John H. Lynn Suite C 103

20070280694 - Optical receiving device and optical receiving method: The present invention provides an optical receiving device, in which a portion of an optical signal is deflected for optical axis detection only when the optical axis is misaligned to thereby achieve a high S/N ratio of a received signal. A condensing section 100 condenses a received optical signal. An... Agent: Wenderoth, Lind & Ponack L.L.P.

20070280695 - Adaptive optical transceiver for fiber access communications: An optical module includes a transmitter optical sub-assembly comprising a transmitter configured to emit a multi-longitudinal-mode (MLM) spectrum signal having an emission spectrum comprising a plurality of distinct narrow-spectrum peaks each corresponding to a longitudinal mode in the transmitter. The emission spectrum can be shifted in wavelength by a change... Agent: Xin Wen

20070280697 - Code grouping for optical networks: The invention is directed to code labeling in an optical network. The network includes a transmitting station operable to transmit an optical signal. The network also includes an encoder coupled to the transmitting station operable to label the optical signal composed of a group of codes. A receiving station operable... Agent: Telcordia Technologies, Inc.

20070280696 - Master/slave multiple path optical switching device: A system and method is provided for controlling switching between multiple primary and diverse optical paths in an optical switching system. The system has a primary upstream optical path, a diverse upstream optical path, one or more primary downstream optical paths, and one or more diverse downstream optical paths. The... Agent: David P Dureska Buckingham Doolittle & Burroughs, LLP

20070280699 - Writing and reading data system, starting from a chromatic printed information that modifies patterns emited by an electromagnetic waves source, introducing biases that conform new patterns, giving place to new data categories matched to a code: The data clusters are characterized by the particular bias introduced at the constitutive patterns of the electromagnetic waves projected through the chromatic deposits at the molecular level of the support, which read by a proper scanner are after processed and assigned to data categories. Those inputs categories, finally produce outputs... Agent: Ladas & Parry

20070280698 - Writing and reading data system, starting from a chromatic printed information that modifies patterns emited by an electromagnetic waves source, introducing biases that conform new patterns, giving place to new data categories matched to a code: The present invention allows setting information into a support (paper, cardboard, plastics, etc.) by printing process or different kinds of chromatic settings (like chemical reactions),which could be read and decoded in controlled and repetitive conditions, matching with a known code. The process makes it possible the production of a low... Agent: Ladas & Parry

20070280700 - Noise tone avoidance in optical networks: Identification of optical channels in wavelength division multiplex (WDM) optical networks may be confounded by unwanted noise tones interfering with pilot/dither tones used for identifying optical channels. The invention describes a method of selecting pilot/dither tones that are selectively restricted to avoid allocating dither/pilot tone frequencies that appear as noise... Agent: Victoria Donnelly

20070280702 - Optical transmitter, optical communication system and method for adjusting optical transmitter: An optical transmitter includes a light-emitting element, a driving circuit, a temperature detection unit, a storage device and a control circuit. The driving circuit causes, based on an input signal, the light-emitting element to emit an optical signal having a pulse shape. The temperature detection unit detects an ambient temperature... Agent: Fildes & Outland, P.C.

20070280701 - Method and apparatus for producing high extinction ratio data modulation formats: The present invention provides both a method and an apparatus for optically encoding data. Light from a coherent source is split into two separate light signals, and each of these light signals is modulated with the data such that the data levels output correspond to the points of maximum optical... Agent: Workman Nydegger

20070280703 - Wavelength sweep control: Methods and apparatus for the active control of a wavelength-swept light source used to interrogate optical elements having characteristic wavelengths distributed across a wavelength range are provided.... Agent: Patterson & Sheridan, L.L.P.

20070280704 - Radio frequency (rf) signal receiver using optical processing and associated methods: A signal receiver, such as an RF-matched filter receiver, includes an optical source (e.g. a mode-locked laser) providing an optical signal, and a first optical modulator to modulate the optical signal with a received RF signal and provide a modulated optical signal. A second optical modulator modulates the modulated optical... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20070280705 - Transmission network having an optical receiver that utilizes dual power pins and a single status pin to lower power consumption, lower manufacturing cost, and increase transmission efficiency: A communication network is provided for interconnecting a network of digital systems, such as multimedia devices. Each node of the communication network may include a receiver and a transmitter. The receiver and transmitter of each node can be an optical receiver and transmitter. The optical receiver is preferably powered by... Agent: Daffer Mcdaniel LLP