Optical communications inventions 10/07

20070248357 - Apparatus and method for adaptive adjustment and performance monitoring of avalanche photo-diode optical receiver and laser transmitter for fiber link long haul applications: A system and method for an Avalanche photo-diode (“APD”) optical receiver and laser system to adjust its performance during system operation without disturbing network traffic. Very small changes may be adaptively applied to some key portions of the system by controlling a set of main system parameters including Q-factor; Bit... Agent: Arent Fox PLLC

20070248358 - Electrical-optical cable for wireless systems: An electrical-optical cable for wireless system that includes two electrical-to-optical (E/O) converter units optically and electrically coupled via a cord that includes a downlink optical fiber, an uplink optical fiber, and an electrical power link. The first E/O converter receives radio-frequency (RF) electrical signals from an access point device, converts... Agent: Corning Cable Systems LLC

20070248359 - Multiport optical transceiver: An optical transceiver device having multiple communication related functions is integrated into a single module, as well as capabilities for integrating a DSP and optical side send/receive processing. The optical transceiver device provides client-access and line-access operations on the optical layers for traffic control and security, and enables parallel implementation.... Agent: St. Onge Steward Johnston & Reens, LLC

20070248360 - Tables for determining the signal strength of a received signal in a fibre optics transceiver: A transceiver that includes a receiver configured to receive a data signal, a controller, a first memory that includes a first table associated with a first set of gain values and a second table associated with a second set of gain values, and a second memory accessible by an external... Agent: Kathy Manke Avago Technologies, Ltd.

20070248361 - Polarization scrambler, optical add/drop multiplexer, optical route switching apparatus and wavelength division multiplexing optical transmission system: A polarization scrambler has a polarization state rotating unit rotating the polarization state of a signal light, and a rotation speed controlling unit controlling the rotation speed of the polarization state in the polarization state rotating unit on the basis of the speed and scheme of modulation of the signal... Agent: Staas & Halsey LLP

20070248362 - Optical communication device and quantum key distribution system using the same: An optical communication apparatus that can perform stable intensity and phase modulation on an optical pulse at high speed is provided, as well as a quantum key distribution system using the apparatus. Using multilevel signals for the electric signals (RF1, RF2) to be applied to two arms of a two-electrode... Agent: Paul J. Esatto, Jr. Scully, Scott, Murphy & Presser

20070248363 - Semiconductor element mounting board and optical transmission module: An optical transmission module of the invention uses a semiconductor chip forming an optical modulator integrated laser on a semi-insulating semiconductor board. An input transfer line and an anode electrode of an optical modulator element are connected by a first bonding wire. The anode electrode of the optical modulator element... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070242953 - Multi-unit wavelength dispersive device: The multi-unit wavelength switch enables multiple independent wavelength switching of a plurality of incoming multiplexed optical beams simultaneously on the same optical platform. The different units can have similar functionality or provide disparate functionality, e.g. any one or more of switching, dynamic gain equalization, wavelength blocking, and power monitoring.... Agent: Teitelbaum & Maclean

20070242952 - Optical bit stream reader system and method: An all optical fiber bit stream reader system for examining the data contents of an optical fiber involving the conversion of a temporal timing signal into a spatially located signal is provided. The invention generally comprises generating and detecting a signal indicating the presence of data, in a manner which... Agent: Cislo & Thomas, LLP

20070242954 - System and method for monitoring transmissions within a passive optical network: A device is provided for monitoring a passive optical network (PON) having optical network terminations (ONTs) joined to an optical distribution network (ODN). The device comprises an optical line terminator (OLT) that includes an E/O transmitter and an O/E receiver. The E/O transmitter converts electrical transmit signals to optical transmit... Agent: The Small Patent Law Group LLP

20070242955 - Optical wireless communications using ultra short light pulses and pulse shaping: An optical, wavelet-based fractal modulation of ultra-short light pulses is used as part of a high-bandwidth communications system. The preferred embodiment utilizes the scheme as part of a hybrid wireless optical and RF transmission system for broadband communications among fixed and/or mobile platforms. An ultra-short pulse laser, high-power WDM-ARRAY laser... Agent: Gifford, Krass, Sprinkle,anderson & Citkowski, P.c

20070242956 - Dispersion monitoring method and apparatus and dispersion slope temperature dependency compensation method and apparatus: In a wavelength division multiplexing optical transmission system, in order to know an influence amount of a temperature dependency of a dispersion slope, a method of monitoring a dispersion variation amount in two or more of wavelength channels is provided. Further, a method of compensating a wavelength dependency of a... Agent: Workman Nydegger

20070242957 - Optical multiplexer and transmitter: The present invention provides an apparatus for multiplexing a plurality of light waves with different wavelengths. The apparatus includes a laser sub-assembly, a multiplexer sub-assembly, and a receptacle sub-assembly. The laser sub-assembly includes a plurality of lasers for radiating a plurality of light waves of different wavelengths. The plurality of... Agent: Amin, Turocy & Calvin, LLP

20070242958 - Optical space transmitter and optical space transmission method for wavelength-multiplexed light: Provided is an optical space transmitter and an optical space transmission method, for wavelength-multiplexed light, capable of obtaining a wavelength-multiplexed signal by multiplexing optical signals having a plurality of wavelengths with a simple configuration and without requiring highly precise adjustment for optical axes and enhancing safety for a human body,... Agent: Wenderoth, Lind & Ponack L.L.P.

20070237520 - Methods and apparatus for identifying a passive optical network failure: A method and corresponding apparatus is disclosed for determining a particular Optical Network Terminal (ONT) in a Passive Optical Network (PON) is malfunctioning by sending a continuous stream of light up a shared fiber, which results in adversely affecting communications between the ONT and an Optical Line Terminal (OLT). The... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20070237523 - Method and apparatus for diagnosing problems on a time division multiple access (tdma) optical distribution network (odn): A method and corresponding apparatus for diagnosing problems on a time division multiple access (TDMA) optical distribution network (ODN) is provided. An example method may include: (i) measuring no-input signal power level on a communications path configured to carry upstream communications between multiple optical network terminals (ONTs) and an optical... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20070237521 - Fault isolation and provisioning for optical switches: The present invention includes method and apparatus for storing provisioned information within the optical switches and retrievable by every controller. The optical switches perform failure isolation according to their provisioning information. The optical switches monitor each channel for loss of signal. The provisioning information is shared autonomously between the optical... Agent: Patterson & Sheridan, LLP/ Lucent Technologies, Inc

20070237522 - Multipoint gating control block in an ethernet passive optical network and method therefor: A MAC (Medium Access Control) control block for controlling transmission of data between a plurality of MAC clients and a plurality of MACs in an Ethernet passive optical network (EPON) is provided. The MAC control block includes the plurality of MAC clients and the plurality of MACs associated with the... Agent: Cha & Reiter, LLC

20070237524 - Optical switching architectures for nodes in wdm mesh and ring networks: Switching architectures for WDM mesh and ring network nodes are presented. In mesh networks, the switching architectures have multiple levels - a network level having wavelength routers for add, drop and pass-through functions, an intermediate level having device units which handle add and drop signals, and a local level having... Agent: Aka Chan LLP / Cisco

20070237525 - Systems and methods for modular capturing various communication signals: Systems and methods for capturing various types of communication signals are provided. An exemplary method comprises the steps of: installing a first type of tapping devices to obtain a first type of communication signals; installing a recording system that is coupled to the first type of tapping devices; receiving of... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20070237526 - System and method for automatic tuning of chromatic dispersion compensation for a wdm transmission system using raman distributed co-pumping: System and method for dispersion compensation tuning for a WDM optical transmission system. A tunable dispersion compensation module (4) is located at or substantially close to a transmitting end of the optical transmission line (2) and at least one distributed Raman amplifier having an Raman pump (1) is coupled to... Agent: Sughrue Mion, PLLC

20070237527 - Optical debug mechanism: A method for performing analysis of electrical signals in a system is disclosed. The system includes at least two circuit elements between which an electrical signal is transmitted. The method converts the electrical signal to dual optical signals, one of which is converted back to an electrical signal for receipt... Agent: Carrie A. Boone, P.C.

20070237528 - Polarization-maintaining optical rotary coupling: An optical rotating data transmission device for polarization-maintaining transmission of linearly polarized light comprises at least one first collimator for coupling on first light-waveguides, and also a second collimator for coupling on second light-waveguides, the second collimator being supported to be rotatable relative to the first collimator about a rotation... Agent: Daffer Mcdaniel LLP

20070230953 - Optical communication device: An optical communication device for detecting a defect in a standby optical fiber. An active optical output unit converts an electrical signal to an optical signal, and a standby optical output unit is provided as a substitute for the active optical output unit. An optical router is connected to the... Agent: Bingham Mccutchen LLP

20070230957 - Station-side apparatus of wavelength multiplexing pon system, wavelength and network address allotting method and program thereof: To achieve a station-side apparatus of a wavelength multiplexing PON system, which is capable of saving the wavelength resource through automatically carrying out allotment of the wavelength and the network address to reduce the complicated work for the setting, and through dynamically allotting the wavelength without fixing it in advance.... Agent: Young & Thompson

20070230958 - Method and system for maintenance of a passive optical network: The present disclosure relates to a passive optical network (PON) and discloses a method and system for maintaining the PON where the optical line terminal (OLT) is provided with an optical power detection module for measuring the total power of optical signals received by the PON, and the optical network... Agent: Conley Rose, P.C.

20070230961 - Relay node in optical networks: A relay node used in a WDM optical network is disclosed. The relay node includes: a high-speed side port configured to send and receive a high-speed signal; a low-speed side port configured to send and receive a low-speed signal; a unit configured to generates a checking message for requesting another... Agent: Bingham Mccutchen LLP

20070230954 - Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching: A light source supplies optical signal to an optical switch and a detector detects light receiving level. A control unit changes a deflection control amount for changing an angle of a tilt mirror, and outputs the deflection control amount to a driving unit. When an input and an output ports... Agent: Staas & Halsey LLP

20070230955 - Optical transceiver with electrical ring distribution interface: A ring connection system and method are provided for distributing signals in an optical-to-electrical interface. The method electrically connects a plurality of nodes in a series-connected ring, and receives an optical signal at a first node from a service provider. The method converts the optical signal to an electrical signal,... Agent: Gerald W. Maliszewski

20070230956 - Channel switching system and method of iptv service in passive optical network: Channel switching system and method of an IPTV service in a passive optical network (PON) are disclosed. To reduce a channel switching time of an IPTV system in the passive optical network, the system and the method use a channel switching control module and a channel list module in the... Agent: Reed Smith LLP

20070230960 - Multi-band hybrid soa-raman amplifier for cwdm: A multi-band hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses Raman laser pumps and semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. Multiple Raman pumps are multiplexed before coupling into the fiber. The Raman amplified optical... Agent: At&t Corp.

20070230959 - Optical communication device: An optical communication device whereby optical attenuation characteristics are linearized to suppress optical level variations among wavelengths attributable to the attenuation characteristics and thereby enable long-distance transmission. Optical attenuators attenuate optical signals of respective wavelengths in accordance with optical attenuation data output from a control data converter. An optical multiplexer... Agent: Staas & Halsey LLP

20070230962 - Device recognition method: In one example first and second remotely communicating devices (RCDs) are physically mated and handshake information is transferred to allow the first RCD to recognize signals from the second RCD. The RCDs are physically separated and signals from the second RCD are recognized by the first RCD. In some examples... Agent: Haynes Beffel & Wolfeld LLP

20070230963 - Remote control for combination compact disc recorder and player system: A remote control unit includes a remote control computer system including an input/output device, a remote control communication system, a remote control speaker system and a remote control memory. The unit also includes remote control software for controlling various interactions between the remote control unit and a combination recorder and... Agent: Waddey & Patterson, P.C.

20070230964 - Optical pickup device and optical information recording/reproducing device: There is disclosed an optical pickup device having semiconductor laser light sources for first, second, and third wavelengths different from each other. After optical paths of laser beams outgoing from the first and second semiconductor laser light sources are synthesized by a first prism, an optical path of a laser... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070230965 - Optical communication module: An optical communication module (A) of the present invention includes a substrate (1) having an elongated rectangular shape, a light emitting element (2) and a light receiving element (3) mounted on the substrate (1) to be arranged side by side in the longitudinal direction of the substrate, a resin package... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20070230966 - Single interface with automatic rate detection and selection for multiple optical communication standards: An optical communication interface for insertion into an optical network is capable of automatically recovering an embedded clock from a received optical signal across multiple communication standards. An optical receiver receives an optical signal and converts it into an electrical signal having the embedded clock. A frequency selector controller automatically... Agent: Agilent Technologies Inc.

20070230967 - Optical transmission system: An optical transmission system includes an optical nonlinear element having nonlinear input/output characteristics, a power detector detecting a power of a specific frequency component related to an optical signal reproduced by the optical nonlinear element, and a variable amplifier amplifying or attenuating the optical signal inputted to the optical nonlinear... Agent: Kratz, Quintos & Hanson, LLP

20070230968 - Optical transmission apparatus: In an optical transmission apparatus, a number of wavelengths of an output light to an optical transmission line and an optical power of each of the wavelengths are detected by a spectrum analyzer, and a power of a super continuum light outputted to a highly nonlinear fiber is controlled by... Agent: Bingham Mccutchen LLP

20070230969 - Optical transmitter with external modulator, optical transceiver including optical transmitter with external modulator, and methods of driving the same: An optical transmitter with an external modulator includes a light-emitting unit emitting a continuous wave light, a modulation unit modulating the continuous wave light in accordance with an electric signal, a first terminal applying a first positive voltage to a cathode of the light-emitting unit and a cathode of the... Agent: Foley And Lardner LLP Suite 500

20070230970 - Transmission device, reception device, signal transmission device, and signal transmission method: A transmitting device and a receiving device at a low cost that can improve reliability of a communication quality, and a signal transmission apparatus and a signal transmission method therefor are provided. An RF signal input to a transmitting device is converted into an IF signal, by a frequency converter,... Agent: Pearne & Gordon LLP

20070230971 - Quantum information transmission device: An invention is presented that can send binary information between locations remote from one another without the velocity limitation of the velocity of light in vacuum and that uses the following principles: 1) superposition of quantum states; 2) a developing entanglement of quantum states for spatially separated physical entities; 3)... Agent: Douglas M. Snyder