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Optical communications September archived patents by title, number, class 09/07

20070223917 - Information processing device, failure notification method, and computer product: When a primary failure occurs, each agent device (information processing device) checks itself to determine whether non-notification setting has been performed for alarm notification of the primary failure. If no non-notification setting has been performed, the agent device sends the alarm notification to a manager device (network management device). At... Agent: Bingham Mccutchen LLP

20070223919 - Optical apparatus: An optical apparatus comprises a phase comparator detecting a phase shift between a changing point of data transmitted through an electro/opto converter and a changing point of data received through an opto/electro converter, a delay controller and a variable delay circuit controlling a delay of the transmitted data so that... Agent: Staas & Halsey LLP

20070223920 - Method and apparatus for determining the dynamic range of an optical link in an hfc network: The dynamic range of an optical link in a network is determined by simultaneously transmitting signals from two network elements at first and second frequencies, which create a combined signal at a third frequency. The transmission power levels of selected network elements is successively increased until the measured power from... Agent: General Instrument Corporation Dba The Connected Home Solutions Business Of Motorola, Inc.

20070223921 - Optical switch system: Each of a plurality of semiconductor optical amplifiers operates as an optical gate switch and selects an optical signal indicated by a gate control signal from an optical gate switch control unit. A plurality of photodetectors monitor the power of an optical signal input through a corresponding input port. A... Agent: Staas & Halsey LLP

20070223922 - Optical transmission device, optical transmission method, and computer product: An optical transmission device includes an input interface unit, a cross-connecting unit, and an output interface unit, and a bandwidth switching control unit, and switches bandwidths allocated to paths in a transmission channel that connects to an adjoining optical transmission device synchronously with the adjoining optical transmission device. When the... Agent: Bingham Mccutchen LLP

20070223925 - Light source wavelength control apparatus: Equipped between a transmitter 20 and an optical multiplexer module 25 of a division/multiplexer unit 24 are band-pass filters 23-1 through 23-m letting only a light of right wavelength pass while reflecting other wavelengths light. The transmitter 20 is equipped with a reflection light monitor 26 for monitoring a reflection... Agent: Staas & Halsey LLP

20070223924 - Optical transmission apparatus: Before being incident to a nonlinear medium, a short pulse is intensity-modulated with a bit string pattern, and then made incident. When the pulse light corresponding to a bit value ‘0’ is incident to the nonlinear medium, the pulse light is intensity-modulated so that the spectral width thereof is not... Agent: Bingham Mccutchen LLP

20070223918 - Optical switching apparatus with optical reflection monitor and reflection monitoring system: Practical utilization of an optical signal processor configured by combining a plurality of optical components requires configurations and methods by which reflected light arising in the processor during assembly, installation, or operation thereof can be detected reliably and immediately to enable switching of optical signal paths and recovery actions (maintenance)... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070223923 - Ring optical transmission network access node: a second coupler (CP) coupling the third port (BPa) of the first splitter (BSa), on the one hand, to the third port (BPb) of the second band splitter (BSb) via a first channel and, on the other hand, to another access point (A1) via a second channel. Such nodes enable... Agent: Sughrue Mion, PLLC

20070223926 - Dispersion compensation device and dispersion compensation method: A dispersion compensating fiber whose chromatic dispersion is positive and a negative dispersion compensating fiber whose chromatic dispersion is negative are prepared, and division-multiplexed optical signals, after being guided to either dispersion compensating fiber to once shift the whole wavelength band to positivity or negativity, are subjected to fine adjustment... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070223927 - Optical pulse time spreader and optical code division multiplexing transmission device: The present invention comprises phase control means of a structure in which an SSFBG 40 having fifteen unit FBGs arranged in series in the waveguide direction is fixed to the core of the optical fiber 36 that comprises the core 34 and cladding 32. The difference Δn between the maximum... Agent: Rabin & Berdo, PC

20070223928 - 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: King & Spalding LLP

20070223929 - Data port alignment of free space optical communications terminal with adaptive optics: An approach for aligning an adaptive optics module and a data port in a free space optical communications terminal. A wavefront sensor in the adaptive optics system is aligned to a reference port. The data port is also aligned to the reference port. In this way, alignment of the wavefront... Agent: Fenwick & West LLP

20070223930 - Method and apparatus for infrared data communication: An apparatus and method for conveying contextually relevant information to a wireless client (112) is disclosed. More particularly, an emitter (108) transmits a diffuse infrared signal to a client (112) having an IrDA infrared communication interface (130). Emitter (108) communicates with client (112) by making a link layer in emitter... Agent: Burns & Levinson, LLP

20070223931 - Dispersion compensation type optical signal receiving apparatus, receiving circuit, receiving method, and receiving program: To obtain a dispersion compensation type optical signal receiving apparatus constituted in such a manner that an electric signal outputted from a light receiving module can be properly inputted to an electronic dispersion compensation IC without being distorted, even when the input level of the optical signal is high. The... Agent: Young & Thompson

20070223932 - Free-space optical hybrid: An exemplary optical hybrid includes a 50/50 un-polarized beam splitter, a folding prism, a beam shifter, a spacer and a phase shifter such that from an input S-beam (signal) and an L-beam (reference), four outputs, S+L, S−L, S+jL, S−jL, are produced. The phase difference of S and L at the... Agent: John P. Wooldridge

20070223933 - Optical transmitter with feed-forward compensation: An optical transmitter with a feed-forward compensation is disclosed. The optical transmitter includes a first light source receiving a second electrical signal to convert into a first optical signal, an optical splitter dividing the first optical signal into a second optical signal and a third optical signal, an optical detector... Agent: Cha & Reiter, LLC

20070223934 - System and method for shaping a waveform: An optical transmission system for transmitting an optical pulse in a dielectric waveguide, the system including a filter for altering a shape of the optical pulse in both amplitude and phase with respect to time so as to substantially suppress the generation of third-order nonlinearities and increase a power level... Agent: St. Onge Steward Johnston & Reens, LLC

20070223935 - Multilayer printed circuit board: A multilayer printed circuit board according to the present invention is a multilayer printed circuit board where a plurality of insulating layers, a conductor circuit and an optical circuit are formed and layered and an optical element is mounted, wherein the above described optical circuit is formed between the above... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070223936 - Broadband analog to digital conversion using analog spectral recording: A method and apparatus for converting an analog waveform to a series of digital values includes receiving an input analog waveform to be digitized over a particular frequency band. A phase-sensitive frequency-domain representation of the input analog waveform is recorded. The phase-sensitive frequency-domain representation is read out and digitized to... Agent: Eugene Molinelli Evans & Molinelli PLLC

20070223937 - All-optical converter: m

20070223938 - Rate adjustable differential phase shift key (dpsk) modulation: In a fixed delay optical communication system, rate adjustable differential phase shift key (DPSK) techniques eliminate the need for multiple comparing modules, each corresponding to a different data rate. Setting alternative data rates at integer multiples of the fundamental data rate of the optical communication system allows the system to... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20070223939 - Optical transmitter: As a capacity of an output interface of an electronic circuit is increased, there results a significant increase in the number of channels of optical signals on a semiconductor LSI, converted from electrical signals. Since a semiconductor laser used as a means for generating the optical signal is inferior in... Agent: Stanley P. Fisher Reed Smith LLP

20070223940 - Plasmonic systems and devices utilizing surface plasmon polaritons: Plasmonic systems and devices that utilize surface plasmon polaritons (or “plasmons”) for inter-chip and/or intra-chip communications are provided. A plasmonic system includes a microchip that has an integrated circuit module and a plasmonic device configured to interface with the integrated circuit module. The plasmonic device includes a first electrode, a... Agent: Carter, Deluca, Farrell & Schmidt, LLP

20070217788 - Passive optical network system and method for protecting the services of the same: The present disclosure provides a passive optical network (PON) system and a method for protecting the service of the system for service recovery and fault locating in case of a failure of the network, wherein the PON system comprises an optical line terminal (OLT), an optical distribution network (ODN) and... Agent: Conley Rose, P.C.

20070217789 - Charge multiplexed array of solid-state photosensitive detectors: A charge multiplexed position sensing apparatus and method for measuring an incident radiation with the aid of an array of solid-state photosensitive detectors such as an array of avalanche photodiodes (APDs). The solid-state photosensitive detectors multiplex sum terminal(s) and a number of correspondent spatial terminals separately. Sum signal busses are... Agent: Lumen Intellectual Property Services, Inc.

20070217790 - Directing optical channels using a reflective device: A device for directing one or more optical channels includes one or more micromirror elements. A micromirror element has a mirror and a mirror controller. The mirror is operable to reflect light at a first interaction area to yield a first passband for an optical channel, and to reflect light... Agent: Baker Botts L.L.P.

20070217791 - Optical communications systems, devices, and methods: Systems, apparatuses, and methods for producing and utilizing orthogonal optical data signals, which can be produced by modulating electrical data signals onto orthogonal polarization components of an optical carrier traveling in opposite directions in a common modulator. The modulator can include one or more traveling wave electrodes having first and... Agent: Dickie, Mccamey & Chilcote, P.C. Intellectual Property Department

20070217792 - Optically transmitting apparatus, optically transmitting system and optically transmitting method: This provides an optically transmitting apparatus, an optically transmitting system and an optically transmitting method. This receives an optical signal which is configured in accordance with any one frame format among a plurality of frame formats and includes at least a clock signal and a data signal, and performs an... Agent: Bingham Mccutchen LLP

20070217793 - Optical communication module: An infrared data communication module includes a substrate on which a wiring pattern including a pad member is disposed, a light emitting element bonded to the pad member, a light receiving element mounted on the substrate, an integrated circuit element for controlling driving of the light emitting element and the... Agent: Rohm Co., Ltd. C/o Keating & Bennett, LLP

20070217794 - Method for measuring optical characteristics and system thereof: During initial start-up of an optical communication system, an ASE reference span loss is calculated based on transmitting power and received power of ASE light generated by an optical amplifier, and an OSC reference span loss is calculated based on the transmitting power and the received power of OSC light.... Agent: Bingham Mccutchen LLP

20070217795 - Improvements relating to reception in optical networks: The present invention relates to a receiver 20 for a free-space optical network. The receiver 20 includes a primary photo detector 12 and a diffuser 13 arranged in the focal plane of an objective lens 11. Auxiliary photo detectors 15a, 15b are arranged to face the diffuser Data reception can... Agent: Philips Intellectual Property & Standards

20070212066 - Optical signal changeover device and optical signal changeover method: Disclosed herein are a device and a method for an optical signal changeover that will not necessitate any addition to the capacity of the optical signal selection unit even when the N×M optical switches are expanded in scale, but can keep the optical signal selection unit compact in size and... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070212068 - Path routing computation method and optical communication network applying path routing computation method: A path routing computation method enables reduction of the memory capacity for path routing computation. The method is characterized in that a wavelength convertible subnetwork in which paths are connected in a mesh form; a first and second wavelength inconvertible subnetworks have a starting point node and an end point... Agent: Katten Muchin Rosenman LLP

20070212071 - System and method for allocating bandwidth in remote equipment on a passive optical network: The present disclosure provides a system and method for allocating bandwidth in remote equipment on a passive optical network (PON), wherein the system includes an optical line terminal (OLT), which monitors the acceptance of traffic requesting the PON remote equipment for service and configures through signaling control the parameters for... Agent: Conley Rose, P.C.

20070212063 - Integrated optical service channel and quantum key distribution channel: A method for integrating an Optical Service Channel (OSC) with a Quantum Key Distribution (QKD) channel across a DWDM network having a single mode optical fiber is provided. An optical signal is received. An OSC is coupled with the optical signal. A QKD channel is integrated with the OSC on... Agent: Aka Chan LLP / Cisco

20070212064 - Method of wdm channel tagging and monitoring, and apparatus: Provided is an optical apparatus and method wherein power transfer coefficients arising from SRS are measured at a designated co-location point and the power of dithers, which are impressed on the channels of a multiplexed optical signal propagating through the optical apparatus, is measured at each co-location point. Within the... Agent: Smart & Biggar P.o. Box 2999, Station D

20070212065 - Method and apparatus for supporting operations and maintenance functionality in an optical burst switching network: Apparatus and method for supporting operations and maintenance (“OAM”) functionality in an OBS network is described. One embodiment is an OBS network having OAM functionality, the OBS network comprising a plurality of OBS nodes interconnected via links. Each of the OBS nodes comprises an OAM module (“OAMM”) for processing information... Agent: Alcatel Lucent Intellectual Property & Standards

20070212067 - Communication path calculation method and module: The present invention relates to a communication path calculation method and module. More particularly, the present invention provides a communication path calculation method and module that are implemented or incorporated in a transmission apparatus including a ROADM or the like which performs WDM communication, advertises information on a wavelength which... Agent: Staas & Halsey LLP

20070212069 - System and method for an ethernet optical area network: An Ethernet Optical Area Network (EOAN) system, and methods for implementing and using such an EOAN system, are disclosed. The EOAN system may be used to improve the speed and reliability of data communications networks for small to medium-sized companies in metropolitan area networks. The EOAN system provides end-to-end Ethernet... Agent: Alan Loudermilk Loudermilk & Associates

20070212070 - 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: King & Spalding LLP

20070212072 - Wavelength upgrade for passive optical networks: A method and system for upgrading service to an optical network terminal among a plurality of optical network terminals on a passive optical network. The upgrade enables bidirectional communications between a central office and the optical network terminal over dedicated downstream and upstream wavelength channels outside the downstream and upstream... Agent: At&t Corp.

20070212073 - Apparatus, system and method for optical signal transmission: According to the present invention, an apparatus, a system and a method for transmitting a FM batch converted signal and another signal on the same optical fiber can be provided. For example, a first signal such as CATV signal may be FM converted in batch. This converted signal may then... Agent: Fitch Even Tabin And Flannery

20070212074 - Apparatus for and method of generating millimeter waves: Provided are an apparatus for and a method of generating millimeter waves, in which millimeter-wave generation and frequency up-conversion can be achieved at the same time using a single device. The apparatus includes a mode-locking laser diode (LD) which has a distributed feedback (DFB) sector and a gain sector and... Agent: Ladas & Parry LLP

20070212075 - Dual-parallel-mz modulator bias control: Methods and apparatus, including computer program products, implementing and using techniques for controlling three or more nested modulators in an optical signal application. A single bias controller circuit is coupled to the respective DC biases for each of the nested modulators. The bias controller circuit sends a separate bias control... Agent: Mollborn Patents

20070212076 - Integrated optical waveform modulation: A method of modulating an optical carrier. A target carrier modulation is computed based on an input data signal. An effective length of an optical modulator is then controlled based on the target carrier modulation.... Agent: Ogilvy Renault LLP

20070212077 - Ultra wideband communication system, transmission device reception device, and replay device used for the same: The ultra wideband communication system comprises: a pulse generation section for generating a pulse signal based on a data signal; a first optical phase modulation section for performing optical phase modulation in accordance with the pulse signal, and outputting a resultant signal as an optical pulse signal; an optical transmission... Agent: Wenderoth, Lind & Ponack L.L.P.

20070212078 - Signal transmission method, drive circuit, electro-optical device, and electronic apparatus: A signal transmission method in which a transmitter generates a data signal by multiplexing a plurality of pieces of data and transmits the generated data signal to a receiver through a transmission channel and in which the receiver generates a plurality of pulse-width modulation signals corresponding to the plurality of... Agent: Oliff & Berridge, PLC

20070212079 - Optical transmission apparatus: An optical transmission apparatus according to the present invention comprises: a plurality of optical modulating sections serially connected to each other via optical fibers; driving sections corresponding to the optical modulating sections; delay amount varying sections that provide variable delay amounts for modulating signals to be input to the driving... Agent: Staas & Halsey LLP

20070212081 - Optical signal receiving circuit and optical signal receiving apparatus: An optical signal receiving circuit has a current-voltage converting circuit which receives the output current signal of a photoelectric converting circuit, converting an optical signal into the current signal, and converts the current signal into a voltage signal. A differential circuit in the subsequent stage to the current-voltage converting circuit... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20070212080 - Infrared receiving unit and infrared headphone/hearing aid: There is provided an infrared receiving unit which has an infrared receiver for receiving infrared signals and a transmitter search facility for carrying out an infrared transmitter search. Such an infrared receiving unit can be suitably used in an infrared headphone/hearing aid, a mobile terminal or an interpretation and conference... Agent: Reed Smith, LLP Attn: Patent Records Department

20070206946 - Modular high-capacity switch: A modular optical switch includes a set of optical switch modules connected in a mesh, a master controller for the whole optical node and a switch-module controller for each of the optical switch modules. The optical switch modules receive optical signals from, and transmit optical signals to, edge nodes based... Agent: Mcguinness & Manaras LLP

20070206947 - Simple fibre channel speed negotiation across transport: A method for negotiating speed between a Fibre Channel (FC) local client and a remote FC client across a DWDM network is provided. A transmission speed of the local FC client at a local ingress transport interface is detected. The data from the local FC client is forwarded along with... Agent: Aka Chan LLP / Cisco

20070206948 - Long-reach wavelength division multiplexing passive optical networks by using the position adjustment of broadband light source: An optical network system includes a central office (CO) comprising an A-band BLS to be injected into a light source for downstream signals, an A-band BLS coupling device for coupling the A-band BLS, a first wavelength-division multiplexer/demultiplexer connected to the A-band BLS coupling device for multiplexing/demultiplexing, and a plurality of... Agent: Knobbe Martens Olson & Bear LLP

20070206949 - System using a fiber optic cable to distribute commands for controlling operations of an appliance: An IR blaster including one or more IR emitting LEDs used to generate IR signals for controlling operations of a plurality of controlled appliance and a plurality of fiber optic cables where one or more of the plurality of fiber optic cables are in light communication with an IR emitting... Agent: Greenberg Traurig, LLP

20070206950 - Method and apparatus for generating and transmitting wdm mwof signals: The present invention includes method and apparatus for converting optical signals to MWOF signals for transmission to wireless data, audio and/or video terminals in the W-band. Advantageously, there is no need to maintain expensive and complex remote stations because a centralized station performs all the complex processing.... Agent: Patterson & Sheridan, LLP/ Lucent Technologies, Inc

20070206951 - Ultra-wide band wireless system: The present invention provides a kind of ultra-wide band wireless system, which changes the previous electronic structure for ultra-wide band pulse generator, and uses light to generate pulse signal, transformed by microwave differentiator to Gaussian monocycle pulse transmission signal, the derived pulse signal can provide several GHz bandwidth to transmit... Agent: Nikolai & Mersereau, P.A.

20070206952 - Optical transmitter: An optical transmission apparatus is provided in which high optical output power is secured in an optical transmitter, the fine adjustment of the optical axis is unnecessary, and the propagation range of the optical output signal can be adaptively changed. A diffusing liquid lens includes a first liquid and a... Agent: Wenderoth, Lind & Ponack L.L.P.

20070206953 - Multi-wavelength bidirectional optical transceiver having monitors: A multi-wavelength bidirectional optical transceiver includes a plurality of optical transmitters for generating and outputting forward optical signals, a plurality of optical receivers for performing optoelectric conversion on reverse optical signals, a band splitter for outputting the forward optical signals that are input from the plurality of optical transmitters to... Agent: Cha & Reiter, LLC

20070206954 - Simultaneous electrical pre-compensation of self-phase modulation and chromatic dispersion: The present invention includes a fast algorithm to compute the pre-equalized waveform for simultaneous compensation of the self-phase modulation and chromatic dispersion experienced by a high-speed optical signal, e.g., at 10 Gb/s, and shows that it is used for an automatic self-adapting pre-equalization when the knowledge on transmission link details... Agent: Patterson & Sheridan, LLP/ Lucent Technologies, Inc

20070206955 - Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio: In the WDM systems, the OSNR and the signal loss among the optical signals are substantially minimized at the receiving terminal to combat the SRS effects. An equal amount of the signal loss is expected for every span in the transmission path so that the optical amplifier gain tilt is... Agent: Knoble & Yoshida, LLC

20070206957 - Method for changing frequency and base station in radio optical fusion communication system: In a radio optical fusion communication system with the integration of an optical fiber transmission path and a radio propagation path, wherein by first and second light sources, an intermediate-frequency signal generating means for generating a modulating signal at an intermediate frequency band, a modulator for modulating an optical signal... Agent: Birch Stewart Kolasch & Birch

20070206958 - Optical beamforming transmitter: The present invention provides an optical beamforming RF transmitter. In one embodiment, the optical beamforming RF transmitter includes an optical WDM splitter having an input and a plurality of outputs. The optical beamforming RF transmitter also includes an array of antennas, where each antenna has an optical input configured to... Agent: Hitt Gaines, PC Alcatel-lucent

20070206956 - Optical transmitting device, optical transmission system, optical transmitting method and optical transmission method: In an optical transmission system by frequency-division multiplexing, the interference due to distortions of a first signal against a second signal can be reduced. In the optical transmission system where a modulated optical signal by the first signal is further modulated with the second signal for transmission, distortions of the... Agent: Fitch Even Tabin And Flannery

20070206959 - Vcsel with integrated optical filter: An example of an optical source includes a VCSEL and a filter. The filter is positioned on the VCSEL and is configured and arranged such that an input to the filter from the VCSEL comprises a directly modulated optical data signal, and a corresponding output of the filter comprises an... Agent: Workman Nydegger (f/k/a Workman Nydegger & Seeley)

20070206961 - Directly modulated or externally modulated laser optical transmission system with feed forward noise cancellation: An optical transmitter for generating a modulated optical signal for transmission over a fiber optic link to a remote receiver including a laser; a modulator for directly amplitude modulating the laser with an analog RF signal to produce an optical signal including an amplitude modulated information-containing component; and a phase... Agent: Casey Toohey Emcore Corporation

20070206962 - Externally modulated laser optical transmission system with feed forward noise cancellation: An optical transmitter for generating a modulated optical signal for transmission over a fiber optic link to a remote receiver including a laser; a modulator for externally modulating the optical output signal with a RF signal to produce an optical signal including a modulated information-containing component; and a phase modulator... Agent: Emcore Corporation

20070206960 - Transmission formats for high bit-rate systems: An apparatus, system and method wherein a multi-level data modulation format, such as DQPSK, is combined with symbol rate synchronous amplitude, phase, and/or polarization modulation.... Agent: Grossman, Tucker, Perreault & Pfleger, PLLC

20070206963 - Optical quadrature-amplitude modulation receiver: In one embodiment, a receiver of the invention has an optical detector coupled to a digital processor. The optical detector is adapted to mix the received optical quadrature-amplitude modulation (QAM) signal with an optical local oscillator (LO) signal having a time-varying phase offset with respect to the carrier frequency of... Agent: Mendelsohn & Associates, P.C.

20070206964 - Receiver having an apparatus for varying decision threshold level and an optical transmission system having the same: The disclosure relates to an optical receiver having an apparatus for varying decision threshold level and an optical transmission system having the same. An optical receiver having an apparatus for varying decision threshold level includes a photo diode (PD) for receiving an optical signal and transforming the received optical signal... Agent: Knobbe Martens Olson & Bear LLP