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Optical communications June archived by invention type 06/08

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
06/26/2008 > patent applications in patent subcategories.

20080152340 - Optical network transmission channel failover switching device: An optical network transmission channel failover switching device is proposed, which is designed for use in conjunction with an optical network for providing a transmission channel failover switching function, which is characterized by the provision of a pair of two-to-two (2×2) optical switches and an optical transceiver module for providing... Agent: Law Offices Of Mikio Ishimaru

20080152341 - Optical network transmission channel failover switching device: An optical network transmission channel failover switching device is proposed, which is designed for use with an optical network for providing the optical network with a transmission channel failover switching function, and which is characterized by the provision of a pair of one-to-two (1×2) type of optical switch and a... Agent: Law Offices Of Mikio Ishimaru

20080152342 - Optical network transmission channel failover switching device: An optical network transmission channel failover switching device is proposed, which is designed for use in conjunction with an optical network for providing a transmission channel failover switching function, which is characterized by the provision of a two-to-two (2×2) type of optical switch, a one-to-two (1×2) type of optical switch,... Agent: Law Offices Of Mikio Ishimaru

20080152343 - System for intercepting signals to be transmitted over a fiber optic network and associated method: A system is provided for intercepting signals transmitted between a target served by a fiber optic network and a subscriber. A network is described having a phone switch at a central office configured to receive signals for transmission to and from a target, such as the target of a criminal... Agent: Verizon Patent Management Group

20080152344 - Passive optical network and ultrawide band adapter: An ultra wideband adapter and a system including the ultra wideband adapter are disclosed. The ultra wideband adapter includes a first input to receive video from a passive optical network element, a second input to receive data from the passive optical network element, an ultra wideband modulator to modulate the... Agent: Toler Law Group

20080152345 - Wavelength division multiplexing-passive optical network system: A wavelength division multiplexing-passive optical network (WDM-PON) system includes a light source provider configured to wavelength-division-multiplex a laser light source of a wavelength allotted to each subscriber and optical-power-divide the multiplexed light source, a plurality of optical line terminals each configured to transmit a light source for upward signal with... Agent: Knobbe Martens Olson & Bear LLP

20080152346 - Method and system for a secure bi-directional line switched ring: A method or system including implementing one or more indicators to specify traffic ordering associated with an optical networking protocol and ordering traffic according to the one or more indicators.... Agent: Verizon Patent Management Group

20080152347 - Infrared remote control module and portable electronic device using same: An infrared remote control module (10) includes an infrared detecting module (11) configured for receiving optical signals and converting the optical signals into digital signals, a signal processing module (12) communicating with the infrared detecting module; and a controlling feedback module (13) communicating with the signal processing module. The infrared... Agent: Pce Industry, Inc. Att. Cheng-ju Chiang

20080152348 - Ir receiver and ir transmitter/receiver module using same: An exemplary IR receiver configured for capturing IR signals is provided. The IR receiver includes an aspherical lens, an IR bandpass filter, a wavefront encoding wave-plate, and a sensor. The aspherical lens defines an optical axis and an image side. The IR bandpass filter, the wavefront encoding wave-plate, and the... Agent: Pce Industry, Inc. Att. Cheng-ju Chiang

20080152349 - Device to detect or generate optical signals: The present invention relates to a device for detecting or generating and modulating optical signals, and having an angular dispersive element arranged to change angles of the optical signals or carrier and/or reference rays brought to interference.... Agent: Dilworth & Barrese, LLP

20080152350 - Broadband access system and device: A broadband access system and a broadband access equipment solve the problem of the management complication, the high cost and the low reliability in the present system. The station side equipment in the broadband access system of the present invention includes: a main control unit, a switching network unit, an... Agent: Ladas & Parry LLP

20080152351 - Data communication using solitons: A system may include a transmission circuit to selectively generate a first soliton-based signal or a second soliton-based signal and a receiver. The receiver may receive a first signal from the transmission circuit, determine whether the first signal comprises the first soliton-based signal or the second soliton-based signal, and determine... Agent: Buckley, Maschoff & Talwalkar Llc

20080152352 - Inline pump sharing architecture for remotely-pumped pre- and post-amplifiers: A new transmission link configuration with remote Er post- and pre-amplifiers where pump power is shared between a pair of fibers carrying traffic in opposite directions is proposed. A budget increase of >4 dB is demonstrated.... Agent: Mcdermid, Turnbull & Anglehart Patent And Trade-mark Agents

20080152353 - Apparatus and method for ranging and noise reduction of low coherence interferometry lci and optical coherence tomography oct signals by parallel detection of spectral bands: Apparatus and method for increasing the sensitivity in the detection of optical coherence tomography and low coherence interferometry (“LCI”) signals by detecting a parallel set of spectral bands, each band being a unique combination of optical frequencies. The LCI broad bandwidth source is split into N spectral bands. The N... Agent: Dorsey & Whitney LLP Intellectual Property Department

20080152354 - Fiber optically coupled control system for homes and businesses: A control circuit linking individual wall boxes within a structure with a master control unit maintains electrical isolation between the control circuit and the circuit to be controlled by means of a fiber optic interface at each wall box which is to be controlled. Each such wall box contains a... Agent: Smith, Gambrell & Russell

20080152355 - Generation of a full-rate optical duobinary signal using half-rate electrical binary signals: An optical transmitter that uses half-rate electrical signals, without multiplexing them to the full rate, to generate a full-rate optical duobinary signal. In one embodiment, an optical transmitter of the invention has a Mach-Zehnder modulator (MZM) driven by two half-rate electrical data streams. A first half-rate data stream is applied... Agent: Mendelsohn & Associates, P.c.

20080152356 - Inverter based return-to-zero (rz)+ non-rz (nrz) signaling: Embodiments of the invention are generally directed to systems, methods, and apparatuses for inverter based return-to-zero (RZ)+non-RZ (NRZ) signaling. The interface circuit contains multiple ganged drivers (some or all of them are turned on at one point of time) and edge detection circuitry (to configure/modulate edges of the input data... Agent: Intel Corporation C/o Intellevate, Llc

20080152357 - Signal transmission device, signal reception device, test device, test module, and semiconductor chip: There is provided a signal transmission device which transmits, in the form of an optical signal, multivalued data which shifts through three or more plurality of logical values, and includes: a light emitting element which outputs light having an intensity corresponding to a power supply current supplied thereto; a current... Agent: Jianq Chyun Intellectual Property Office

20080152358 - Light receiver: A light receiver has a photoelectric conversion circuit which converts an input optical signal into an electrical signal, an electric amplifier which amplifies the electrical signal output from the photoelectric conversion circuit, a threshold adjustment circuit which outputs a threshold value according to signal information in the optical signal, and... Agent: Leydig Voit & Mayer, Ltd

20080152359 - Light receiving apparatus using dqpsk demodulation method, and dqpsk demodulation method: The present invention provides a light receiving apparatus using the DQPSK demodulation method. The light receiving apparatus comprises: one Mach-Zehnder interferometer for branching a received light signal into light signals at two arms to allow the branched two light signals to interfere with each other; one balanced photoelectric converter for... Agent: Sughrue Mion, Pllc

20080152360 - Ultrafast chirped optical waveform recording using referenced heterodyning and a time mircoscope: A new technique for capturing both the amplitude and phase of an optical waveform is presented. This technique can capture signals with many THz of bandwidths in a single shot (e.g., temporal resolution of about 44 fs), or be operated repetitively at a high rate. That is, each temporal window... Agent: Michael C. Staggs Attorney For Applicants

20080152362 - Adaptive polarization tracking and equalization in coherent optical receivers: A method for operating an optical receiver includes at each of a sequence of sampling times, producing a first 2D complex digital signal vector whose first component is indicative of a phase and amplitude of one polarization component of a modulated optical carrier and whose second component is indicative of... Agent: Lucent Technologies Inc. Docket Administrator

20080152361 - Frequncy estimation in an intradyne optical receiver: A method for determining symbols PSK modulated on an optical carrier includes interfering a first polarization component of the modulated optical carrier and a reference optical carrier in a first optical mixer and interfering the first polarization component of the modulated optical carrier and the reference with a different relative... Agent: Lucent Technologies Inc.

20080152363 - Polarization tracking and signal equalization for optical receivers configured for on-off keying or pulse amplitude modulation signaling: According to one embodiment, an optical receiver adapted to recover OOK or PAM data carried by a modulated optical carrier has an optical detector adapted to produce a sequence of vector pairs having first and second digital vectors indicative of complex values of first and second polarization components, respectively, of... Agent: Mendelsohn & Associates, P.c.

06/19/2008 > patent applications in patent subcategories.

20080145047 - Method of determining delay in an adaptive path optical network: A method of determining delay in an end-to-end path of an adaptive path optical network, the method comprising deriving average IP packet delay from the product of average link utilisation of IP packets in the network being sent in bursts and delay in two way reservation optical burst switching networks,... Agent: Bell, Boyd & Lloyd, LLP

20080145048 - Optical fiber monitoring system and method incorporated with automatic fault protection mechanism: The present invention provides an optical fiber monitoring system and method incorporated with an automatic fault protection mechanism. The optical fiber monitoring system includes a primary optical channel, a secondary optical channel, an optical channel fault examination device, a plurality of automatic fault protection devices, and a plurality of optical... Agent: Squire, Sanders & Dempsey L.l.p

20080145049 - Apparatus for measuring the characteristics of an optical fiber: An apparatus for measuring the characteristics of an optical fiber is provided. An optical pulse generator generates, from a coherent light, first and second optical pulses having a time interval which is equal to or shorter tan a life time of an acoustic wave in the optical fiber. A detector... Agent: Sughrue Mion, Pllc

20080145050 - System and method for improving the efficiency of routers on the internet and/or cellular networks and/or other networks and alleviating bottlenecks and overloads on the network: The biggest bottleneck in the Internet today is caused by the slow speed of routers, compared to the speeds that are achieved by optic fibers with DWDM (Dense Wave Division Multiplexing). Packet switching or something similar to it is needed not just for better utilization of the lines, but also... Agent: Yaron Mayer

20080145051 - Long reach optical network: An optical network is provided including a first optical network section operatively coupled to a carrier facility configured to transmit traffic onto channels in the first optical network section. A second optical network section may be operatively coupled to the first optical network section at a first node. Additionally, the... Agent: Verizon Patent Management Group

20080145052 - Methods for the optical transmission of polarization multiplex signals: In order to reduce mutual interferences between POLMUX and signals, the signals are transmitted with differed to each other carrying signals, thereby making it possible to obtain the circular polarization of each resulting POLMUX signal. Each second POLMUX signal is transmissible with an opposite circular polarization. In order to reduce... Agent: Siemens Corporation Intellectual Property Department

20080145054 - Optical module with optical filter: An optical module (1) according to the present invention has an optical filter (6) having an input surface (2) and an output surface (4), an input core (8) connected to the input surface (2), and an output core (10) connected to the output surface (4). Assuming that light having a... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080145053 - Optical processing: A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to... Agent: Hamilton, Brook, Smith & Reynolds, P.c.

20080145055 - System and method for implementing a high capacity unrepeatered optical communication system: A method of communicating an optical signal includes generating an optical signal at a bit rate of at least 2.5 Gb/s. The optical signal including at least thirty optical channels. In one particular embodiment, at least some of the thirty optical channels reside within a 1567-1620 nanometer wavelength range. The... Agent: Baker Botts L.l.p.

20080145056 - Communications method, particularly for a mobile radio network: Communications method between a main station and processing nodes includes interconnecting the main station and the nodes in an optical path defining adjacent nodes and non-adjacent nodes, operatively grouping the nodes in a plurality of distinct sub-groups, each formed by non-adjacent nodes, at least one of said sub-groups including at... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080145057 - Method and system for generating switching control signal separating transmission signal in optical repeater employing tdd scheme: Disclosed are a method and a system for generating switching control signal separating transmission signal on an access point and a mobile communication terminal in an optical repeater employing, for example, a TDD scheme. The method includes the steps of generating a control signal for generating a switching control signal... Agent: Cha & Reiter, Llc

20080145058 - Communications device, communications method, and communications circuit: A communications device includes: an IrDA frame detecting section 202, an IrSimple frame detecting section 201, and a transfer rate control section 230. The IrDA frame detecting section 202 detects a first predetermined frame based on pulses detected in an incoming response signal at first predetermined intervals. The IrSimple frame... Agent: Birch Stewart Kolasch & Birch

20080145060 - Integrating optoelectronic components into a molded communications module having integrated plastic circuit structures: Integrated optical subassemblies (OSA) such as integrated transmit and receive optical subassemblies that may be implemented with an optical transceiver module that includes a molded body. The integrated OSA includes a mounting surface defined on a vertical portion of the molded body, a wall extending about the mounting surface, at... Agent: Workman Nydegger

20080145059 - Method for measuring the high speed behavior of fiber optic transceivers: A method for measuring the high speed behavior of fiber optic transceivers and transceiver modules. The method includes providing a fiber optic transceiver, performing one or more low speed performance tests on the fiber optic transceiver at each of a plurality of temperatures across transceiver operating temperature range, and performing... Agent: Kathy Manke Avago Technologies Limited

20080145061 - Radio over fiber link apparatus of time division duplex scheme: A radio over fiber link apparatus for transmitting/receiving radio frequency up/downlink signals in a TDD mobile communication system. The radio over fiber link apparatus includes a center site for receiving radio frequency signals from an access point of the mobile communication system. The center site has a first electro-optic converter... Agent: Cha & Reiter, Llc

20080145062 - Apparatus for optical data transmission: An apparatus for optical data transmission between components of a rotary system is provided. The apparatus include a number of transmit units and a number of receive units. The transmit units and the receive units are disposed such that at least one receive unit always lies in the region of... Agent: Brinks Hofer Gilson & Lione

20080145063 - Optical transceiver using heterodyne detection and a transmitted reference clock: A heterodyne communication system uses coherent data modulation that is resistant to phase noise. In particular, a pilot tone and reference clock signal are transmitted along with the modulated data to form the basis of an electrical demodulation local oscillator at the receiver. The pilot tone and/or reference clock signal... Agent: Rory D. Rankin Meyertons, Hood, Kivlin, Kowert & Goetzel, P.c.

20080145064 - Optical line terminal and optical network terminal: The optical line terminal has a PON transceiver including an error correction code decoder. The error correction decoder includes: a shortening compensation parameter table; and a syndrome calculator for calculating a syndrome by referring to the shortening compensation parameter table, or an error search part for calculating an error position... Agent: Mcdermott Will & Emery LLP

20080145065 - Transmitting equipment and receiving equipment: A unit timing signal synchronized with a high-order transmission frame is used for measuring a difference between the number of data pieces of a client signal mapped to the high-frequency frame and the number of data pieces of the output client signal by integrating the difference therebetween for each unit... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080145066 - Coherent optical receiver: A coherent optical receiver of the invention combines local oscillator light having orthogonal polarization components in which the optical frequencies are different to each other, and received signal light, in an optical hybrid circuit, and then photoelectrically converts this in two differential photodetectors. Then this is converted to a digital... Agent: Staas & Halsey LLP

06/12/2008 > patent applications in patent subcategories.

20080138062 - Automatic ont self disabling system, method, and computer readable medium: A system, method and computer readable medium comprising instructions for sending a message from an Optical Network Terminal (ONT) to an Optical Line Terminal (OLT), if the ONT does not receive an expected OLT action or an expected OLT response to the message within a period, considering the non-receipt of... Agent: Alcatel Lucent Intellectual Property & Standards

20080138063 - System and method for protecting an optical network: In accordance with the teachings of the present invention, a method for protecting traffic in a passive optical network (PON), includes transmitting downstream traffic destined for one or more optical network units (ONUs) from a first set of one or more transmitters. The method further includes substantially simultaneously transmitting the... Agent: Baker Botts L.l.p.

20080138065 - Evaluation and adjustment method of optical receiver and optical communication system:

20080138064 - Optical network terminal agent: A method is provided including the steps of monitoring at least one performance metric of at least one network component in an optical network system, determining whether the at least one network component is a rogue network component using the at least one performance metric, saving environment data to a... Agent: Verizon Patent Management Group

20080138066 - Method and system for band blocking in an optical telecommunication network: Method and system for band blocking in an optical telecommunication network. According to an embodiment, the present invention provides a system for optical network. The system includes an input that is configured to receive an input signal through a first optical input. The system also includes a band splitting module... Agent: Townsend And Townsend And Crew, LLP

20080138067 - Network with a fast-switching optical core: A high capacity network comprises a plurality of edge nodes with asymmetrical connections to a plurality of switch planes, each switch plane comprising fully meshed fast-switching optical switch units. Upstream wavelength channels from each source edge node connect to different switch planes in a manner which ensures that upstream wavelength... Agent: Maged E. Beshai

20080138068 - Optical cross-connect using wavelength selective switches: An optimally-sized optical cross-connect that switches optical signal paths with a minimum number of wavelength selective switches and their interconnections. To switch optical signals of N routes (N=1, 2, . . . ), an optical cross-connect includes a 2×N (2-input, N-output) wavelength selective switch for each of N input routes... Agent: Staas & Halsey LLP

20080138069 - System and method for transmitting optical markers in a passive optical network system: In accordance with the teachings of the present invention, a system and method for transmitting optical markers in a passive optical network (PON) system is provided. In a particular embodiment, a method for transmitting optical markers in a PON system includes transmitting a first optical marker signal, the first optical... Agent: Baker Botts L.l.p.

20080138070 - Optical polarization division multiplexing in optical communication: Apparatus, systems and techniques for optical communication based on polarization division multiplexing (PDM) using an optical monitor channel to facilitate the effective demultiplexing of the two orthogonal signal channels through automatic feedback control on a dynamic polarization controller and a polarization beam splitter.... Agent: Fish & Richardson, Pc

20080138071 - Apparatus for implementing electro-optical catv network and signal processing method used by the apparatus: Provided is an apparatus for implementing an electro-optical cable distribution network in which a coaxial cable is replaced with an optical cable in order to provide a service integrating broadcast data and communication data by solving a frequency constraint problem in a cable television (CATV) network employing a conventional hybrid-fiber... Agent: Rabin & Berdo, Pc

20080138072 - Passive optical network system, optical line terminal, and optical network unit: In a PON system by WDM, IP broadcast can be received without oppressing a band used by a user for Internet communication. An OLT provides a first wavelength received in common by respective ONUs and plural second wavelengths by which the OLT and the respective ONUs perform communication individually. With... Agent: Mattingly, Stanger, Malur & Brundidge, P.c.

20080138074 - Optical wavelength multiplexing system, optical wavelength multiplexing method, and computer product: An optical wavelength multiplexing system includes transmission-side and reception-side optical wavelength multiplexers, and terminal devices, which are connected to each other by optical fiber cables. Optical wavelength converters in the transmission-side optical wavelength multiplexers are connected to ports respectively. The optical wavelength converter converts an input optical signal into an... Agent: Staas & Halsey LLP

20080138073 - Wavelength conversion apparatus in time division multiplexing -passive optical network sytem based on wavelength division multiplexing system, and optical transmission apparatus and method using the same: Provided are a wavelength conversion apparatus in a Time Division Multiplexing Passive Optical Network (TDM-PON) system based on a Wavelength Division Multiplexing (WDM) system, and an optical transmission method using the wavelength conversion apparatus. Each subscriber does not need to have its own wavelength but transmits an uplink signal using... Agent: Rabin & Berdo, Pc

20080138076 - Optical transmission system for radio access and high frequency optical transmitter: Modulators respectively modulate baseband signals into IF signals having different frequencies. A multiplexer multiplexes the IF signals. An electrical-optical converter intensity modulates the multiplexed IF signals into optical signals. A local oscillation signal source outputs a predetermined local oscillation signal. An external modulator intensity-modulates the optical signal using the local... Agent: Wenderoth, Lind & Ponack L.l.p.

20080138075 - System and method for providing an ethernet interface: In more particular embodiments, v>=n>=m. The communication media interfaces can be electrical and optical. Each of the communication channels can include a SerDes interface operating at least 5 Gigabits per second. Furthermore, each of the m communication media interfaces is configured to transmit a different stream of information over a... Agent: Baker Botts L.l.p.

20080138077 - Diverging beam optical communication system: The invention refers to a diverging beam wireless network node including multiple bidirectional point-to-point links, which align between a central hub and dispersed clients. Assuming that the hub is limited in size, the receivers may be in close proximity to one another. In this case, the optical signal from two... Agent: Mayer & Williams

20080138078 - Point to point optical communication system for conveying signals between multiple housings of a device: An optical communication system is provided for conveying signals between multiple housing elements of a device, where respective optical detectors and optical light sources interact via respective point to point communication paths, where the point to point communication path is maintained while the multiple housing elements of the device move... Agent: Motorola Inc

20080138079 - Optical communication system with light guide having variable slidable point of entry or exit: An optical communication system is provided for conveying signals between multiple housing elements of a device, where respective optical detectors and optical light sources interact via a light guide associated with each communication path, where an optical signal produced by the optical light source and received by the optical detector... Agent: Motorola Inc

20080138080 - Controller detection: In an Optical Network Termination (ONT), a software controlled system, method and computer readable medium includes measuring a modulation current of an upstream laser transmission. The measured modulation current is processed to determine if a continuous transmission state is present, in response to which, a processor of the ONT sends... Agent: Alcatel Lucent Intellectual Property & Standards

20080138081 - Device and method of swapping optical labels and reproducing optical payload and optical switching device using the device: In a conventional network for transmitting an optical burst signal, it is impossible to effectively swap labels, reproduce a payload signal, and switch and transmit the signals. A device for swapping optical labels and reproducing an optical payload, includes: an envelope detection unit outputting an envelope of payloads or labels... Agent: Blakely Sokoloff Taylor & Zafman

20080138082 - Apparatus and method for generating optical return-to-zero signal: Provided are an apparatus and method for generating an optical return-to-zero (RZ) signal using an electronic integrated circuit that generates an electric RZ signal. The apparatus for generating an optical RZ signal includes an electronic integrated circuit generating an electric return-to-zero (RZ) signal based on an input data signal and... Agent: Townsend And Townsend And Crew, LLP

20080138083 - Method and apparatus for extracting optical clock signal: Provided are a method and an apparatus for optically extracting a clock signal, that can be realized at low costs while minimizing an influence by input patterns and noises. In the method, optical signals having predetermined wavelength components are extracted using two FBG filters in order to extract a clock... Agent: Rabin & Berdo, Pc

20080138084 - Method and apparatus for transmitting error information between ethernet network and synchronous digital hierarchy network: Provided are a method and apparatus for transmitting error information between an Ethernet network and a synchronous digital hierarchy (SDH) network. According to the present invention, when an error occurs in the Ethernet network or the SDH network, OAM information is transferred to the opposite network by using a conventional... Agent: Townsend And Townsend And Crew, LLP

20080138085 - Illumination with optical communication method: The present invention provides an illumination with optical communication method that includes the following steps: a), establishing a signal source; b), encoding and transmitting of signal; c), actuating an LED to emit light; d), detecting light variation; e), analyzing, decoding and signal regeneration, which enables the recovery of original data... Agent: Troxell Law Office Pllc

20080138087 - Optical quantum information transfer device: Binary information can be sent between locations remote from one another in part without the limitation of the velocity of light in vacuum. The OQITD relies on “hidden” events for idler photons traveling through an interferometer where these “hidden” events point to which-way information for these photons. Through either: 1)... Agent: Douglas M. Snyder

20080138086 - Optical transmitter circuit: A light emitting element driving differential switch (2) includes first and second transistors (M1, M2). A third transistor (M3) is connected as an auxiliary switch in parallel to the first transistor (M1) whose drain is connected to a light emitting element (1). A third switch driving signal (IN3) is input... Agent: Mcdermott Will & Emery LLP

20080138088 - Monolithic transmitter photonic integrated circuit (txpic) having tunable modulated sources with feedback system for source power level or wavelength tuning: A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to received all the signal outputs from the modulated... Agent: North Weber & Baugh LLP

20080138089 - Optical transmitter: In an optical transmitter, a light-emitting device, a modulator that outputs a differential modulation current via alternating current coupling capacitors to an anode terminal and a cathode terminal of the light-emitting device, a first current source between the cathode terminal and a ground line (GND) of the light-emitting device, and... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080138090 - Method and arrangement for forming a transmitter-side transmission signal: A transmitter-side transmission signal for compensating disturbances caused by e transmission properties of an optical transmission system is provided. A high-bit-rate-binary signal is serially introduced into an N-level-shift register. A bit pattern whose bit number depends on the transmission system disturbance influence is removed from the shift register and introduced... Agent: Siemens Corporation Intellectual Property Department

20080138091 - Optical element, optical module holder including optical element, optical module, and optical connector: A light attenuating refractive surface 7 is formed on an optical surface 4 disposed on an optical path between an optical transmission line 2 and a photonic element 3 in a main body of the optical element. The light attenuating refractive surface 7 attenuates the amount of light coupled between... Agent: Quinn Emanuel Urquhart Oliver & Hedges, LLP Koda/androlia

20080138092 - Optical-receiving apparatus and bias-voltage-control method used for the optical-receiving apparatus: According to an optical-receiving apparatus including an APD converting input light into an electric signal and a bias-voltage-control method used for the optical-receiving apparatus, a multiplication factor appropriate for the APD is predetermined and a multiplication factor used for the APD can be maintained at the level of the predetermined... Agent: Staas & Halsey LLP

06/05/2008 > patent applications in patent subcategories.

20080131114 - Fault localization apparatus for optical line using subcarrier multiplexing (scm) monitoring sgnal and method thereof: Provided are a fault localization apparatus based on an optical communication network and a method thereof. In the fault localization apparatus according to the present invention, a downstream light source is used as a monitoring optical signal instead of using an additional monitoring light source and a subcarrier multiplexing (SCM)... Agent: Townsend And Townsend And Crew, LLP

20080131115 - Device for optical remote monitoring and system comprising such a device: The invention relates to a device for optical remote monitoring, preferably an optically readable membrane-based microphone, and a system comprising such a device. The device (1) for optical remote monitoring comprises a retroreflector (3, 4) and an acoustic membrane (2). The acoustic membrane (2) suitably is a light-modulating component and... Agent: Jacobson Holman Pllc

20080131116 - Optical power measurement apparatus and optical power measurement method: An apparatus provides measurement of power of an optical signal transmitted in a wavelength multiplexing scheme, based on the optical spectrum and the information on the optical signal. A method provides measuring the power of an optical signal transmitted in a wavelength multiplexing scheme based on the optical spectrum of... Agent: Staas & Halsey LLP

20080131118 - Configurable multi-rate optical network port and processing modules: Embodiments of the present invention provide an optical port that can be configured to support either high speed or low speed optical signals. In particular, these embodiments comprise a switch that defines a data-rate dependent path between the front-end optics of a network node and internal processing electronic modules. As... Agent: North Weber & Baugh LLP

20080131119 - Lens adjusting method, lens adjusting device, and optical switch: An optical switch includes plural pairs of ports and first lenses, each of the ports emitting light in a diffused manner or receiving light input thereto in a collected manner, and the first lenses respectively collimating light emitted from the ports; a second lens that collects the light collimated by... Agent: Staas & Halsey LLP

20080131117 - Method and apparatus for increasing transmission capacity in optical transport network: Provided are a method and apparatus for increasing transmission capacity for large-capacity high-speed signal transmission in an optical transport network (OTN). A method and apparatus for increasing transmission capacity are needed, which can transmit a large-capacity high-speed signal in order to transmit a signal through a united OTN by adapting... Agent: Rabin & Berdo, Pc

20080131120 - Wavelength division multiplexing passive optical network architecture with source-free optical network units: An optical system and method includes a source-free optical network unit coupled to an optical fiber for receiving an original carrier signal with downstream data over the optical fiber. The optical network unit includes a modulator configured to remodulate the original carrier signal with upstream data to produce an upstream... Agent: Nec Laboratories America, Inc.

20080131122 - Optical network architectures and optical communication schemes: The present invention provides optical network methods and systems. In one example, a method for handling packets in a node coupled to a ring and star subnetwork may include (a) receiving in the given node a data packet on the ring subnetwork, (b) detecting a failure on the ring subnetwork,... Agent: Mcdonnell Boehnen Hulbert & Berghoff LLP

20080131121 - Wavelength division multiplex optical ring network: A wavelength division multiplex optical ring network comprises optical fibre (1-4) arranged in a ring configuration and a plurality of doped fibre optical amplifiers (17-20) arranged in the ring. The spectral response in the ring is configured such in use amplified spontaneous emission (ASE) noise circulates around the ring in... Agent: Coats & Bennett, Pllc

20080131123 - Distributed resource sharing method using weighted sub-domain in gmpls network: A distributed resources sharing method using weighted sub-domain table of sub-domains in a GMPLS optical network is provided. The distributed resources sharing method includes; connecting working paths to an optical network according to a request of a subscriber; calculating a weighting factor for measurement of concentration of the sub-domains including... Agent: Rabin & Berdo, Pc

20080131124 - Method and apparatus for partial duplex protection switching by using single splitter in pon: A method and apparatus for duplex protection switching by using a single splitter in a passive optical network (PON) are provided. The apparatus for duplex protection switching in a PON, in which a single optical line termination (OLT) and many optical network terminations (ONTs) are connected together in a multiple-access... Agent: Rabin & Berdo, Pc

20080131125 - Loopback-type wavelength division multiplexing passive optical network system: Provided is a loopback-type wavelength division multiplexing passive optical network (WDM-PON) system including: a central office converting downstream signals into downstream optical subcarrier multiplexed (SCM) signals to wavelength-multiplex and transmit the downstream SCM signals, or receiving and demodulating upstream optical on-off keying (OOK) signals to convert the upstream optical OOK... Agent: Townsend And Townsend And Crew, LLP

20080131127 - Broadband light source using fabry perot laser diodes: Disclosed is a broadband light source (BLS) necessary to implement wavelength-locked Fabry-Perot (FP) laser diodes (LDs) applicable to an optical subscriber network The BLS is based on a method using mutual injection of low-cost FP LDs and a method using FP LDs undergoing chirping. A power level of a light... Agent: Blakely Sokoloff Taylor & Zafman

20080131126 - Mechanism for tracking wavelengths in a dwdm network without specialized hardware: In one embodiment, techniques provide a mechanism for tracking wavelengths in a DWDM network. In particular, embodiments of the present invention also provide for connection tracking using a fast pilot tone in a DWDM network without dedicated hardware for the generation and the diction of the tone.... Agent: Aka Chan LLP / Cisco

20080131128 - Optical signal transmission device and optical communication network: By using wavelength division multiplexing technologies, redundant star topology network is constructed on a ring-shaped optical fiber network. Edge-switches 5a, 5b, 5c, and 5d are connected to client station groups 6a, 6b, 6c, and 6d are connected, respectively. The edge-switches 5a, 5b, 5c, and 5d are connected to edge optical... Agent: Notaro And Michalos

20080131129 - Distribution node for an optical network: A distribution node for an optical network is provided that includes an integrated filter module comprising a first thin-film and a second thin-film coupled to a common substrate and operable to receive a first downstream signal at the substrate comprising at least traffic in a first wavelength and a second... Agent: Baker Botts L.l.p.

20080131130 - Optical network node device: Provided is an optical network node device. According to the optical network node device, a planar lightwave circuit (PLC) based or a blocker based 4-terminals ROADM can be used in a node of at least degree 3, a proceeding direction of a wavelength channel can be changed in an electrical... Agent: Townsend And Townsend And Crew, LLP

20080131131 - Remote control module and portable electronic apparatus having same: An exemplary portable electronic apparatus having a remote control module is provided. The portable electronic apparatus includes a housing, a mobile communication module disposed in the housing, a remote control module disposed in the housing, and a radio frequency (RF) module electrically connected with the mobile communication module. The remote... Agent: Pce Industry, Inc. Att. Cheng-ju Chiang

20080131132 - Network interface device: A network interface device includes a body, a cover, and a cable spool. The front of the body defines a forward interior in which telecommunications components are arranged. An optical adapter extends partially out of the forward interior at an optical coupling location. The cover includes a shroud that extends... Agent: Merchant & Gould Pc

20080131134 - Bi-directional optical communications system and corresponding method: Bi-directional laser communications system comprising a first transceiver and a second transceiver for establishing two optical channels there between. The first transceiver comprises a first transmitter with a pulsed high-power laser source for transmitting a pulsed beacon laser signal into a first of said optical channels. The second transceiver comprises... Agent: Mccormick, Paulding & Huber LLP

20080131133 - Low sinr backscatter communications system and method: A method and system for a device to embed a low signal to interference plus noise ratio (SINR) communications signal into the backscatter of an illuminating signal. The illuminating signal may be acoustic or electromagnetic (EM) such as radio frequency (RF), light, or infrared (IR). The embedded communications signal may... Agent: Schwegman, Lundberg & Woessner, P.a.

20080131136 - Method and apparatus for converting interface between high speed data having various capacities: Provided are a method and an apparatus for converting an interface between high speed data having various capacities. The apparatus includes a data transmitting part and a data receiving part. The data transmitting part generates a deskew channel having respective timing data of a plurality of data transmitted from a... Agent: Lowe Hauptman Ham & Berner, LLP

20080131135 - Optical transceiver module: Optical transceiver with pluggable optical module. An electro-optical transceiver, preferably in a standard form factor such as XENPAK, XPAK, or X2, is adapted to receive a pluggable optical module, preferably complying with the XFP standard. The transceiver adapts signals from the pluggable optical module to the transceiver interface.... Agent: Agilent Technologies Inc.

20080131137 - Optical switch and optical switch control method: The first polarization controller controls a polarization of a signal light. The second polarization controller controls a polarization of a control light. The nonlinear medium generates an intensity correlation signal. The monitor monitors a polarization state of light outputted from the nonlinear medium. The controller controls the first polarization controller... Agent: Staas & Halsey LLP

20080131138 - Optical switch and optical waveform monitoring apparatus: e

20080131139 - Optical data link stably operable for duplicated reset: The preset invention provides an optical data link that prevents the internal I2C bus system from being hung up. The data link provides a CPU able to receive a reset signal and an IC (PHY) to control the physical layer to communicate with the outside of the data link, and... Agent: Venable LLP

20080131140 - Method for communication link connection using visible light communication: A method for communication link connection in a data transmission between devices using visible light communication (VLC) that can provide a visible indication prior to establishing a communication link between the devices. The method includes activating a VLC mode by a first VLC apparatus in order to transmit the data;... Agent: Cha & Reiter, Llc

20080131141 - Parallel channel optical communication using modulator array and shared laser: An optical transmitter includes a drive laser, a 1×N splitter, and an array of modulators. The 1×N splitter is coupled to split a beam from the drive laser into separated beams, and the modulators modulate the respective beam to represent respective data signals that are transmitted in parallel. Embodiments of... Agent: Kathy Manke Avago Technologies Limited

20080131142 - Synchronous amplitude modulation for improved performance of optical transmission systems: A method and apparatus is provided that yields improved performance of both single channel and WDM long-distance optical transmission systems by synchronously modulating of the transmitted signal's amplitude. An amplitude modulator receives an optical signal onto which data has been modulated at a predetermined frequency. The modulator re-modulates the amplitude... Agent: Grossman, Tucker, Perreault & Pfleger, Pllc

20080131143 - Optical transmission device and electronic equipment with use thereof: An optical transmission device of the invention has an optical transmitter unit 1 in which a light emitting element and a light receiving element are sealed with resin by transfer molding, and a holder 2 which holds the optical transmitter unit 1 being contained therein and which holds an optical... Agent: Birch Stewart Kolasch & Birch

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