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Optical communications

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.
10/02/2014 > 26 patent applications in 19 patent subcategories.

20140294377 - Proactive delay measurement for optical transport network: A network element is disclosed. In accordance with some embodiments of the present disclosure, a network element may comprise a network interface configured to communicatively couple to a network, and a controller communicatively coupled to the network interface. The controller may be configured to determine a delay-measurement interval, and to... Agent: Fujitsu Limited

20140294378 - Transmission apparatus, transmission system, and method of controlling average optical input power: A transmission apparatus includes: an amplifier controller configured to determine a target value for an average optical input power of a transmitting amplifier in a transmitting-side apparatus, based on an index based on a quality of transmission from an output of the transmitting amplifier to an output of a receiving... Agent: Fujitsu Limited

20140294379 - Method and apparatus for using credits to determine cable length: Various systems and methods for using credits to determine cable length are described herein. A number of available credits is determined at a transmitter, the credits being received at the transmitter from a receiver, and each of the credits being used for the transmitter to transmit a packet to the... Agent: Cisco Technology, Inc.

20140294380 - Optical device and transmitter: An optical device includes an optical waveguide that includes an incident waveguide, parallel waveguides along an electrode, and emission waveguides, formed on a substrate having an electro-optical effect, a first emission waveguide among the emission waveguides is set as an output waveguide of signal light, for output to an external... Agent: Fujitsu Optical Components Limited

20140294381 - Adjusting carrier spacing in a channel: An optical system may include optical transmitters to provide respective optical signals. Each of the respective optical signals may provide one or more carriers in an optical channel. The optical channel may include multiple carriers associated with the respective optical signals. First and second carriers, of the multiple carriers, may... Agent: Infinera Corporation

20140294382 - Communication apparatus and communication method using the same: A communication apparatus includes a first communication unit configured to transmit and receive data using wireless LAN communication and a second communication unit configured to receive data using wireless communication that is different from the wireless LAN communication. The communication apparatus provides data, received through the first communication unit and... Agent: Electronics And Telecommunications Research Institute

20140294383 - Apparatus and method for an optical network: An optical network is configured to provide an optical reroute over a backup path (2139) during a failure in a signal path (2133). The network comprises a first node (B). A second node (C) is coupled to receive a signal from the first node (B) via the signal path (2133),... Agent: Telefonaktiebolaget L M Ericsson (publ)

20140294384 - Optical wavelength path rearranging method, computer product, optical transmission managing apparatus, and optical transmission apparatus: An optical wavelength path rearranging method includes detecting time that elapses since a setting of optical wavelength paths in an optical wavelength division multiplexing network; and moving to a predetermined long-period optical wavelength range, an optical wavelength path that is among the optical wavelength paths and for which the detected... Agent: Fujitsu Limited

20140294385 - Mitigating rogue optical network unit (onu) behavior in a passive optical network (pon): Techniques, apparatus and systems are described for an optical line terminal (OLT) operable in a passive optical network (PON) system to isolate and mitigate the behavior of a rogue optical network unit (ONU) that transmits optical power up the optical distribution network (ODN). In one aspect, a method of mitigating... Agent: Zte Corporation

20140294387 - Method and arrangement for adaptive dispersion compensation: c

20140294386 - Optical transmitting apparatus and optical receiving apparatus: An optical transmitting apparatus includes semiconductor laser elements. Upon receiving laser beams, a multiplexed beam is emitted from a wavelength multiplexing filter. The wavelength multiplexing filter includes a triangular prism and a wavelength multiplexing filter film. A front end face and a rear end face of the prism are not... Agent: Mitsubishi Electric Corporation

20140294388 - Dynamic bandwidth allocation method, olt, and pon system: In a PON system in which plural kinds of modulation schemes coexist, when uplink burst signals from respective ONUs are received, the receiving efficiency degrades as the number of the times of switching of the modulation scheme increases. In an optical access (PON) system supporting plural kinds of modulation schemes,... Agent: Hitachi, Ltd.

20140294391 - Bandwidth allocation device and bandwidth allocation method: An OLT controller 90 makes each optical transceiver 21 transmit a search signal at a prescribed time so that the search signals reach all ONU connection ends of an optical transmission path 101. In the case where an ONU 10 connected to the ONU connection end of the optical transmission... Agent: Nippon Telegraph And Telephone Corporation

20140294389 - Method and apparatus for controlling an optical network unit to restart upon completion of downloading new software: The invention provides a method and apparatus for controlling an optical network unit to restart upon completion of downloading new software. Upon completion of downloading a new software version, an optical network terminal firstly determines a type of an active image request to be transmitted based upon stored values, of... Agent: Alcatel-lucent

20140294390 - Method and apparatus for protecting fiber optic distribution systems: A fiber optic network has alarmed fiber optic lines in the cables connecting a secured junction box to plural user lock boxes. An outgoing alarm line and return alarm line in each cable connect the junction box to each user box. The outgoing alarm line is looped to the return... Agent:

20140294392 - High-throughput routing in an optical network having a mesh topology: An optical routing scheme in which an optical network having a mesh topology is configured to route optical packets through an optical routing layout superimposable with the mesh topology, but having a star-like topology. Using this routing layout, the optical network can be configured to transport optical packets from respective... Agent: Alcatel-lucent Usa Inc.

20140294393 - Optical ofdm transmission: A method for transmitting digital information having a predetermined bit-rate (B) via a nonlinear optical channel includes determining a combination of transmission parameters comprising a number (N) of subcarriers, an information symbol rate (S) for each subcarrier, and a number (b) of bits per symbol on each subcarrier, such that... Agent: Ofidium Pty Ltd.

20140294394 - Optical communication apparatus and optical communication method: An optical communication apparatus and an optical communication method are disclosed. An optical communication apparatus mounted in a first node in a linear network coupled among a plurality nodes through an optical transmission line includes a multiplexer for receiving a plurality of optical signals having different wavelengths to output a... Agent: Electronics And Telecommunications Research Institute

20140294395 - Wide temperature range optical fiber connector with thermal expansion compensation: An optical fiber assembly comprises an optical fiber having a forward end, a ferrule supporting the optical fiber, a beam expanding element aligned with the forward end of the optical fiber, and a thermal expansion compensation element adjacent the optical fiber to compensate for thermal expansion differences between the optical... Agent: Molex Incorporated

20140294397 - Information communication method: An information communication device which transmits a signal using a change in luminance includes a determiner that determines a pattern of the change in luminance by modulating a signal to be transmitted and a transmitter that transmits the signal by causing a display to change luminance according to the determined... Agent:

20140294398 - Information communication method: An information communication device includes an exposure time setter that sets an exposure time of an image sensor so that a bright line corresponding to an exposure line included in the image sensor appears according to a change in luminance of the light emitter. A first information obtainer obtains first... Agent:

20140294396 - Signal receiving structure and electronic device having the same: A signal receiving structure and an electronic device having the same are disclosed. The signal receiving structure used for the electronic device to receive an infrared signal includes a signal receiving area, a first block, a second block, and a third block. The signal receiving area is used to receive... Agent: Wistron Corporation

20140294399 - Laser relay for free space optical communications: A laser relay module for free space optical communications including an optical telescope for receiving and transmitting optical beams; an optical diplexer for separating transmitting and received optical beams; an optical amplifier; a modulated beacon laser for line of sight control of a plurality of communicating remote network nodes; a... Agent: Raytheon Company

20140294400 - Optical module and optical transceiver module: An optical module includes a first light-guide element, an optical element, a first optical fiber, and a beam splitter. The first light-guide element includes a first surface and a second surface. The optical element corresponds to the first surface. The first optical fiber is contacted with the second surface. The... Agent:

20140294402 - Optical transmission apparatus, optical transmission method and program for optical transmission: An optical transmission apparatus 301 according to the invention includes a modulator 101 and a controller 102. The modulator 101 is a modulator capable of quadrapture phase-shift keying the light from a light source and outputting the light. The controller 102 controls the input signal to the modulator 101 and... Agent: Nec Corporation

20140294401 - Optical transmitter and method thereof: An optical transmitter including an optical modulator comprising a first modulator and a second modulator connected in parallel to each other in the form of a Mach-Zehnder interferometer, and a phase shifter connected to the second modulator in series, a high-speed generator configured to generate a single carrier signal or... Agent: Electronics And Telecommunications Research Institute

09/25/2014 > 19 patent applications in 15 patent subcategories.

20140286634 - Transceiver system, transmission device, reception device, and control method of transceiver system: A transmission circuit of a transmission device transmits a signal to a reception circuit of a reception device via a plurality of signal paths included in a communication line. A first interface circuit is connected to the transmission circuit and one or more signal paths. A second interface circuit is... Agent: Fujitsu Limited

20140286633 - Transponder and optical transmission apparatus: A transponder among a plurality of transponders that are connected with a client device via a plurality of optical couplers, the transponder includes a protection timer configured to be activated when an alarm indication signal transmitted from the client device is received, and a controller configured to control transmission of... Agent: Fujitsu Limited

20140286635 - Optical transmission apparatus and dummy light inserting method: An optical transmission apparatus includes a wavelength multiplexing unit that performs wavelength multiplexing with respect to dummy light for each channel of WDM and dummy light for each sub-band including the channels in plural; and a selecting unit that measures for each sub-band and corresponding to intensity of the channel-specific... Agent: Fujitsu Limited

20140286636 - Optical transceiver device: An optical transceiver device has an optical transceiver component, an O/E conversion substrate and a switch control substrate. The optical transceiver component is connected to the first, second optical fiber network equipments for the transmission of optical signal, respectively. The O/E conversion substrate is electrically connected to an in-line equipment... Agent: Formerica Optoelectronics Inc.

20140286637 - Wavelength-multiplexed optical transmission device, wavelength-multiplexed optical transmission system, wavelength-multiplexed optical transmission method: Provided is a wavelength division multiplexing (WDM) optical transmission device which is suitable of performing splitting, wavelength multiplexing, switching, and routing on an optical WDM signal in which optical signals having a spectrum close to a rectangle are arranged with a high density, and efficiency of spectral usage is ultimately... Agent: Hitachi, Ltd.

20140286638 - Signal processing apparatus and signal processing method: Signal processing means includes carrier compensation means for compensating for a phase difference and a frequency difference between signal light and local light in relation to two polarization signals, so as to generate two carrier compensated signals, symbol determination means for demodulating the two carrier compensated signals on the basis... Agent:

20140286639 - Method for data communication in optical network system, optical line terminal, and optical network system: The present invention provides a method: sending a downlink message to an optical network terminal through a first port of an optical line terminal; receiving, from a second port of the optical line terminal, an uplink message returned by the optical network terminal; obtaining a second time of receiving the... Agent:

20140286640 - Method and apparatus for designing network: A network design method that determines a TDM transmission line for accommodating a given demand includes: extracting an available demand from among a plurality of provided demands; calculating a total bandwidth of the extracted available demand; sequentially selecting the plurality of demands; generating candidates for a combination of TDM transmission... Agent: Fujitsu Limited

20140286641 - Code sequence control of infrared blaster: A code sequence relayed to an infrared blaster is monitored. If the code sequence approaches a violating sequence, the infrared blaster is controlled to emit infrared light with a corrected sequence that does not express the violating sequence. If the code sequence does not approach the violating sequence, the infrared... Agent: Microsoft Corporation

20140286642 - Electronic compensation of cross-phase modulation: An optical signal (116) is modulated with a transmitted electrical signal comprising an information-bearing component (122) and a pilot tone (120) having a predetermined frequency. Transmission of the signal results in distortion, including nonlinear optical transmission impairments. A method of receiving the signal includes detecting the optical signal to produce... Agent: Ofidium Pty Ltd

20140286643 - Extremely high frequency (ehf) distributed antenna systems, and related components and methods: Extremely High Frequency (EHF) distributed antenna systems and related components and methods are disclosed. In one embodiment, a base unit for distributing EHF modulated data signals to a RAU(s) is provided. The base unit includes a downlink data source input configured to receive downlink electrical data signal(s) from a data... Agent:

20140286644 - Information communication method: An information communication method that enables communication between various devices is an information communication method of transmitting a signal using a change in luminance, and includes: determining a pattern of the change in luminance, by modulating the signal to be transmitted; and transmitting the signal, by a plurality of light... Agent: Panasonic Corporation

20140286645 - Lighting fixture and visible-light-communication system with same: A lighting fixture is configured to modulate light intensity of a light source (11) comprising a light-emitting device (2) to superpose a communication signal on illumination light of the light source (11). The fixture includes: a main power supply (3) configured to control light output of the light source (11)... Agent: Panasonic Corporation

20140286646 - Transceiver and interface for ic package: An interconnect system includes a first circuit board, first and second connectors connected to the first circuit board, and a transceiver including an optical engine and arranged to receive and transmit electrical and optical signals through a cable, to convert optical signals received from the cable into electrical signals, and... Agent: Samtec, Inc.

20140286647 - Method and system for a low-voltage integrated silicon high-speed modulator: Methods and systems for a low-voltage integrated silicon high-speed modulator may include an optical modulator comprising first and second optical waveguides and two optical phase shifters, where each of the two optical phase shifters may comprise a p-n junction with a horizontal section and a vertical section and an optical... Agent: Luxtera, Inc.

20140286648 - Optical mimo processing: A technique is provided for an optical multiple input multiple output (MIMO) processing system. The optical (MIMO) processing system includes an interface to a multi-mode fiber at a first end of the optical processing system; M first single-mode waveguides coupled to the interface; wherein the first waveguides are arranged to... Agent:

20140286649 - Signal level detect circuit with reduced loss-of-signal assertion delay: A signal level detect circuit configured to assess an input signal with varying amplitude signal levels and to generate an indicator signal includes an input circuit configured to receive the input signal and to process the input signal, the input circuit including a first node on which the input signal... Agent: Micrel, Inc.

20140286650 - Optical receiver and frequency offset correction method: An optical receiver includes: a frontend circuit configured to generate a baseband signal representing a received optical signal by using local oscillator light; a frequency offset estimator configured to estimate a frequency offset of the baseband signal; a frequency offset corrector configured to correct the frequency offset of the baseband... Agent: Fujitsu Limited

20140286651 - Optical receiver and method for manufacturing the same: An optical receiver for coherent optical communication, includes: a splitting element that splits a signal light into two optical axes; optical hybrids each of which is coupled with the two split optical axes; a skew adjustment element that is arranged on one of the optical axes, and adjusts a difference... Agent: Sumitomo Electric Industries, Ltd.

09/18/2014 > 63 patent applications in 39 patent subcategories.

20140270749 - Free-space optical network with agile beam-based protection switching: A system includes a network having multiple network nodes each configured for free-space optical communication. Each network node includes one or more apertures through which optical beams are transmitted and received over optical links. The optical links include (i) a traffic link that transports higher-rate traffic between nodes and (ii)... Agent: Raytheon Company

20140270750 - Optical source monitoring system: An example embodiment includes an optical transmission device. The optical transmission device includes an optical source, a collimator lens, and an optical monitor. The optical source is configured to transmit a channel of light. The collimator lens is configured to reflect a portion of the channel of light. The optical... Agent: Finisar Corporation

20140270751 - Passive optical loopback: An optical communication device comprises an input/output configured to be coupled to an optical communications line, and a passive optical loopback module coupled to the input and configured to receive optical signals from the input/output, the loopback module being further configured to reflect incoming signals of a test wavelength to... Agent: Rockstar Consortium US Lp

20140270752 - Optical transmitting device and optical transmission system: An optical transmitting device includes: a laser diode to which a first or second driving current is provided; a controller to provide the laser diode with the first driving current to transmit an optical signal and with a plurality of second driving currents, to emit light, different from each other... Agent: Fujitsu Limited

20140270754 - Method and related network element providing delay measurement in an optical transport network: A delay measurement method of a path (P) or path segment through a transport network and a corresponding network nodes (NE1, NE2) for performing the delay measurement are described, which provide a higher precision and lower jitter. An originating network node (NE1) inserts a delay measurement request signal (REQ) into... Agent: Alcatel Lucent

20140270753 - Method and system for communicating with remote equipment: An embodiment of the invention comprises a testing device selecting at least one power port for testing. The testing device enables at least one power port to output power, where the power may be used by a corresponding remote device that may be present. The testing device may then determine... Agent: Tellabs Operations, Inc.

20140270756 - Measurement device, measurement method, transfer device, and optical network: A measurement device includes a first obtaining unit configured to obtain a first power ratio that indicates a ratio of optical signal power of a first wavelength in a first spectrum at a reception device to optical signal power of a second wavelength different from the first wavelength in the... Agent: Fujitsu Limited

20140270755 - Methods and apparatuses for improved ethernet path selection using optical levels: Methods and apparatuses are provided to employ an enhanced Loss of Signal (ELOS) function in network equipment (NE) such as an Ethernet switch that is coupled to an optical path by a transceiver (e.g., an SFP). Diagnostics such as optical path receive (Rx) level from the transceiver are used by... Agent: Hubbell Incorporated

20140270757 - System control of repeatered optical communications system: The system-level control of a repeatered optical communications system. In a repeatered optical communications system, two terminals are optically coupled via an optical communications span having one or more repeaters. One of the terminals may perform the control by monitoring quality metrics of optical signals received over the communication span.... Agent: Xtera Communications, Inc.

20140270758 - Optical communication apparatus and pcb including optical interface for realizing concurrent read and write operations: An optical communication apparatus and printed circuit board (PCB), which include an optical interface for realizing concurrent read and write operations, and a data processing system including a memory module and the PCB are provided. The optical communication apparatus includes an optical interface unit configured to output optical signal of... Agent: Samsung Electronics Co., Ltd.

20140270759 - Ultra-high-speed optical transport based on adaptive ldpc-coded multidimensional spatial-spectral scheme and orthogonal prolate spheroidal wave functions: Systems and methods for transmitting data, including encoding one or more streams of input data using one or more adaptive Low Density Parity Check (LDPC) encoders, wherein the encoders generate one or more signal constellations; modulate one or more signals using hybrid multidimensional coded modulation; apply orthogonal prolate spheroidal wave... Agent: Nec Laboratories America, Inc.

20140270761 - Method and apparatus for efficient and transparent network management and application coordination for software defined optical switched data center networks: Application actions are optimized by receiving actions from one or more distributed applications, translating the received actions into one or more network operation primitives, processing the network operation primitives to determine an optimized set of network operation primitives, determining an optimal execution sequence for the optimized set of network operation... Agent: Sodero Networks, Inc.

20140270762 - System and method for data center optical connection: A connectivity device permits simplified connections for realizing complex networking topologies using lower cost components. The device can be optically passive, or can have an active aspect to control switching to realize additional topology related features. The device permits cabling to be simplified while reducing cost to permit implementations of... Agent: Plexxi Inc

20140270763 - Systems and method for routing data: Provided herein are methods and systems for routing data. One embodiment comprises a filter mask and route determination logic. The filter mask is operable to produce a filter value from the data. Then, the route determination logic may determine where the data is to be accepted or rejected based on... Agent: Emulex Corporation

20140270760 - Twin multicast switch: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for optical switching. An optical switch device includes a first multicast switch unit; and a second multicast switch unit, wherein each of the first and second multicast switch units respectively include: multiple optical input ports; multiple optical switches;... Agent: Oplink Communications, Inc.

20140270764 - Control plane for integrated switch wavelength division multiplexing: A method of controlling optical data flow in a network is provided. The method includes: receiving, by a switch controller, a data flow including a plurality of data packets used for network management and control, the network switch including at least one wavelength tunable optical data transmission interface to a... Agent: International Business Machines Corporation

20140270765 - Pluggable optical host and network i/o optoelectronic module: In an embodiment, a pluggable optical host and network I/O optoelectronic module (hereinafter “module”) includes a first optical-electrical-optical (OEO) converter and a second OEO converter. The first OEO converter is configured to convert N inbound optical signals to M inbound optical signals and includes N network-side optical receivers, first signal... Agent: Finisar Corporation

20140270766 - Upgradeable passive optical fiber circuit: Optical equipment for 1G-EPON, 10G-EPON, and CWDM services are joined together using a novel combination of optical power splitters and multiplexers. This combination of splitters and multiplexers can be disposed in a single housing, which reduces the size of the combination and improves performance, since jumpers between multiple, separately packaged,... Agent: All Systems Broadband, Inc.

20140270767 - Cross-connect using ethernet multiplexors for a simple metro ethernet network: A metro area network is provided that includes edge and core multiplexors each having a plurality of line ports and one or more uplink ports, a transport network carrying multiplexed traffic between the edge and core multiplexors. In a hard cross connect implementation utilizing source port tagging, a cross-connect device... Agent: Rockstar Consortium US Lp

20140270768 - Optical line terminal of passive optical network, and method for controlling upstream band using the same: Disclosed are an apparatus and a method capable of adjusting an upstream band for a corresponding ONU by detecting a quantity of bands occupied by a packet, not an effective user packet, among upstream transmission bands for each target object of allocation of each band in the OLT to examine... Agent: Electronics And Telecommunications Research Institute

20140270769 - Optical network unit, optical access network and a method for exchanging information: A method for exchanging information with an Optical Network Unit (ONU), the method comprising: receiving, by the ONU, downstream signals that comprise a pilot signal and downstream information signals; wherein the downstream information signals embed first polarization modulated information and second polarization modulated information; wherein the pilot signal is received... Agent: Technion Research And Development Foundation Ltd.

20140270773 - Flashless optical network unit: A system, method, and computer program product for a flashless optical network unit (ONU) in a Passive Optical Network (PON) are provided herein. The method includes the steps of synchronizing on a downstream signal of an optical line terminal (OLT), receiving a first software from the OLT for its operation... Agent: Broadcom Corporation

20140270772 - Method and apparatus for identifying a port in a passive optical network: Typical passive optical networks (PONs) employ several optical network terminals (ONTs) connected to an optical line terminal (OLT) via an optical splitter/combiner (OSC). Due to the passive nature of the OSC, determining a port assignment of an ONT may be difficult or impossible. Methods described herein provide for identifying a... Agent: Tellabs Bedford, Inc.

20140270771 - Network server layer providing disjoint channels in response to client-layer disjoint path requests: In one embodiment, a network server layer provides disjoint channels in response to client-layer disjoint path requests. For example, the network layer can be an optical network, and the client layer may be a packet switching layer (e.g., label switching, Internet Protocol). In one embodiment, a server-layer node receives a... Agent:

20140270770 - Passive optical networking redundancy via two or more auto sensing optical line terminals: An embodiment of the invention provides communications services to Optical Network Terminals (ONTs) in a Passive Optical Network (PON) with at least two Optical Line Terminals (OLTs). The role of these OLTs is autonomously governed based on characteristics of upstream signals from the ONTs. When an OLT in a standby... Agent: Tellabs Bedford, Inc.

20140270775 - Method for registering optical network unit in telecommunications network and optical network unit therefor: In a telecommunications network including an optical line terminal (OLT) having optical subscriber units (OSUs) and an optical network unit (ONU) connected to the OLT, bandwidth allocation signals are periodically transmitted at a first period from the respective OSUs to the ONU, and an acknowledgement request signal is transmitted from... Agent: Oki Electric Industry Co., Ltd.

20140270774 - Systems and methods of hybrid dwdm aggregation and extension for time division multiplexing passive optical networks: Example embodiments of the systems and methods of hybrid DWDM aggregation and extension for time division multiplexing passive optical networks as disclosed herein solves problems facing cable operators and telecommunications operators by using WDM and DWDM technologies for time division multiplexing passive optical network aggregation and by extending the reach... Agent: Cox Communications, Inc.

20140270776 - Optical communication apparatus, optical route switching apparatus and network: An optical communication apparatus, in the sending side, distributes client signals according to destinations and a communication capacity of each destination, electrical-to-optical converts the distributed signals to optical signals having different center frequencies, and multiplexes the optical signals to output, and in the receiving side, the optical communication apparatus divides... Agent: Nippon Telegraph And Telephone Corporation

20140270777 - Wide bandgap matrix switcher, amplifier and oscillator: An electronic device comprising an optical gate, an electrical input an electrical output and a wide bandgap material positioned between the electrical input and the electrical output to control an amount of current flowing between the electrical input and the electrical output in response to a stimulus received at the... Agent: Lawrence Livermore National Security, LLC

20140270780 - Apparatus and method for forward error correction over a communication channel: There are various drawbacks by using existing OTN (Optical Transport Network) frames for communication between OTN cards. Such drawbacks might for example include high latency, low robustness, and/or high coding rate. According to embodiments of the present disclosure, systems and methods are provided for modifying an OTN frame (or creating... Agent: Cortina Systems, Inc.

20140270778 - Bidirectional optical data communications module: An optical transceiver module includes N light sources, N light detectors, a bidirectional fiber port, and an optical network having 2N−1 wavelength-selective elements. The number 2N represents the total number of transmit and receive channels in a bidirectional system in which transmit and receive signals corresponding to the transmit and... Agent: Avago Technologies GeneralIP(singapore) Pte. Ltd.

20140270779 - Wavelength selection and configuration method for multi-wavelength optical communication system: Provided is an OLT including a wavelength splitter that splits all upstream optical signals with different wavelengths received from at least one ONU according to wavelength, at least one receiver that receive the optical signals split by the wavelength splitter according to wavelength, a wavelength selector that allocates an upstream... Agent: Electronics And Telecommunications Research Institute

20140270781 - Optical signal demodulator, optical signal demodulating method, and optical add-drop multiplexer: An optical signal demodulator includes: an obtaining unit configured to obtain a spectrum of an optical signal generated by a second signal being superimposed on a first signal using frequency modulation; an identifying unit configured to identify a peak wavelength which is a wavelength corresponding to a peak position of... Agent: Fujitsu Limited

20140270782 - Bidirectional submarine repeater using unidirectional amplification: A bidirectional submarine transmission using unidirectional amplification transmits first and second communication signals bidirectional to each other over a repeater path with common end-to-end points, the repeater path includes a single unidirectional amplifier, the repeater path has a first branch path for the first communication signal through the single amplifier... Agent: Nec Laboratories America, Inc.

20140270785 - Electro-photonic memory system: An electro-photonic memory system includes a semiconductor memory device for storing data by receiving a first electrical signal, a memory controller for generating a second electrical signal to control the semiconductor memory device, an electrical-to-optical converter for receiving the second electrical signal from the memory controller and converting the second... Agent: Samsung Electronics Co., Ltd.

20140270783 - Radio-frequency signal repetition and amplification using phase-modulation injection-locked lasers: A method and apparatus for regenerating a received radio frequency (RF) signal may mix the received RF signal with a first laser signal, and the result, or a filtered version thereof, may be used to injection-seed a second laser. The result may be mixed with the first laser signal, and... Agent: Phase Sensitive Innovations, Inc

20140270784 - Stackable photonic interconnect module: An interconnect module for communicating electrical signals and optical signals is described. In particular, an integrated circuit in the interconnect module receives and transmits the electrical signals with other components in a system that includes the interconnect module via an electrical connector. In addition, the integrated circuit receives and transmits... Agent: Oracle International Corporation

20140270787 - Auto commissioning for optic distributed antenna system: An optic distributed system includes a head end unit (HE) comprising a head end radio frequency unit (HRFU), at least one remote unit (RU), a corresponding optic cable connected between the HRFU and the at least one RU, and a controller configured to detect a forward radio frequency (RF) signal... Agent: Advanced Rf Technologies, Inc.

20140270786 - Integrated production of self injection locked self phase loop locked optoelectronic oscillator: The present invention details fabrication guidelines of integrated optoelectronic oscillators with frequency and phase stability, having higher frequency selectivity in a relatively small size (compared to the larger size of a higher order electrically realized RF filter), reduced temperature sensitivity, and minimized frequency drift. The integrated photonic components and RF... Agent: Synergy Microwave Corporation

20140270788 - Method of fabricating and operating an optical modulator: A method of making an optical modulator by determining the material composition of the quantum well region in the waveguide portion of the modulator so that the modulator is transparent at a gain peak wavelength that is greater than the predetermined wavelength by a predetermined amount, and fabricating the modulator... Agent: Emcore Corporation

20140270789 - Optically powered media converter: An optically powered media conversion device for performing optical to electrical conversion is disclosed. The conversion device includes at least one optical coupler for receiving at least one optical signal comprising at least one wavelength, wherein the at least one optical coupler extracts energy from the at least one optical... Agent: Adc Telecommunications, Inc.

20140270790 - Contactless fiber optic connector assemblies: A contactless connector module includes first and second fiber optic connector assemblies. The first fiber optic connector assembly includes a first fiber optic cable and a first connector provided at an end of the first fiber optic cable. The first connector includes a first converter converting between optical and electrical... Agent: Tyco Electronics Corporation

20140270792 - Apparatus and methods of displaying messages for electronic devices: An apparatus of transmitting messages from an electronic device and display it on a mobile device, and a method of doing the same are disclosed. An exemplifying electronic device has an encoder to encode the data and a drive to modulate the signals into temporal and spatial light patterns according... Agent:

20140270794 - Methods and systems for encoding and decoding visible light with data and illumination capability: A lighting system includes light fixtures not in communications with and not synchronized with one another, and one or more light sensors. Each light fixture separately emits data encoded visible light including light fixture information encoded therein in a manner that avoids visually perceptible flicker and enables light fixture information... Agent:

20140270791 - Multi-wavelength visible light communications systems and methods: A system for transmitting data using light includes a plurality of light sources configured to transmit light at non-overlapping wavelengths, processing electronics, and a diffuser configured to diffuse the transmission of light. The processing electronics assign the plurality of light sources to a plurality of channels, accept a data stream,... Agent:

20140270793 - Optical communication for solid-state light sources: The disclosure relates to a lighting fixture, which includes an array of solid-state light sources that are configured to generate light for general illumination lighting purposes and control circuitry. A drive signal is used to drive solid-state light sources. The control circuitry is configured to use a control output to... Agent: Cree, Inc.

20140270795 - Stratosphere tethered platform for multiple uses: The present invention is realized by apparatus and methods for placing a large rigid buoyant platform in the low stratosphere of earth's atmosphere at an altitude of about 20 km, above clouds, moisture, dust, and wind. The platform can serve several uses, either individually or in any combination. These uses... Agent:

20140270797 - Building illumination apparatus with integrated communications, security and energy management: An LED light and communication system includes one or more optical transceivers that have a light support having a plurality of light emitting diodes and one or more photodetectors attached thereto, and a processor in communication with the light emitting diodes and the one or more photodetectors. The processor is... Agent: Federal Law Enforcement Development Services, Inc.

20140270796 - Method and apparatus of decoding low-rate visible light communication signals: Methods and apparatus related to the detection of low-rate visible light communication (VLC) signals and the recovery of information communicated by the VLC signals are described. Various methods and apparatus are well suited for embodiments in which a device, e.g., a smartphone, including a camera which uses a rolling shutter.... Agent: Qualcomm Incorporated

20140270798 - Hazardous location visible light communication networks: A method of communicating a condition in a hazardous location. The method can include determining, using a controller of a first controller communicably coupled to a measuring device, the condition in the hazardous location, and emitting, based on the condition, a first light output from a first light source in... Agent:

20140270799 - Method and system for camera enabled error detection: The disclosure generally relates to a method and apparatus for decoding optical signals form a device. An exemplary method includes the steps of receiving, at a device, a plurality of optical frames, each optical frame having an encoded optical signal with an optical signal frequency; recording the plurality of optical... Agent:

20140270800 - Intrapersonal data communication system: Intrapersonal communication systems and methods that provide an optical digital signal link between two or more local devices are disclosed. In some embodiments, the system includes a first signal converter disposed at a first end of the optical digital signal link and configured to convert between electrical digital signals from... Agent: N2 Imaging Systems, LLC

20140270801 - Systems and methods using optical communication for commissioning of network nodes: Embodiments relate to methods, devices, and computer-implemented methods for transmitting a modulated signal transmitted from at least one signal light source and using the modulated signal for commissioning of network nodes. The method can include determining, by a network node, that the network node is not commissioned. The method can... Agent: Google Inc.

20140270802 - Quantum synchronization for classical distributed systems: A quantum mechanical synchronization system for a classical distributed computing system. Einstein-Podolsky-Rosen links are established providing entangled photons to provide the quantum synchronization. In one embodiment, the system includes a laser oscillator pump, a spontaneous parametric down-conversion element coupled to the laser oscillator pump, the spontaneous parametric down-conversion element having... Agent: Raytheon Company

20140270803 - Optical transmission using polarisation diversity: Method, transmitter, receiver, and system for communicating information carried by a polarization divided optical signal in an optical fiber, comprising: producing and transmitting a polarization divided optical signal OTApol comprising optical sideband pairs SBLA, SBHA each having one sideband SBLA at a first polarization and an other sideband SBHA at... Agent: Telefonaktiebolaget L M Ericsson (publ)

20140270804 - Control timing synchronization method, optical transmission system, and optical transmission apparatus: A control timing synchronization method is executed by a first and a second optical transmission apparatus. The first optical transmission apparatus: superimposes on a main signal and transmits, information of control process details; waits for a first period; subsequently, superimposes on the main signal and transmits, a message giving notification... Agent: Fujitsu Limited

20140270805 - Asymmetry correction for precise clock synchronization over optical fiber: A clock at a first network element that is connected to a second network element over an optical fiber link is aligned in time/phase using packet protocols such as PTP. The invention discloses how to correct the asymmetry error inherent in traditional packet-based time-transfer methods.... Agent:

20140270806 - Adaptive sampling qualification for extinction ratio control: Techniques are described for adaptive sampling qualification for extinction ration control. The techniques may be implemented in a laser driver assembly which includes a laser driver and a sampling loop configured to facilitate sampling of photodiode current produced by a monitor photodiode (MPD) of an optical transmitter assembly. The sampling... Agent:

20140270807 - System and method for suppression of even-order photodiode distortions: A system for suppressing even-order distortion in a photonic link includes a laser for providing laser light to a first input of a Mach-Zehnder modulator (MZM), where the MZM has a second input for receiving an RF input signal, a third input for applying a DC bias voltage to the... Agent:

20140270808 - Method and system for a polarization mode dispersion tolerant optical homodyne detection system with optimized transmission modulation: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of... Agent: Teradvance Communications LLC

20140270809 - Coherent optical receiver and optical receiving method: A coherent optical receiver according to an exemplary aspect of the invention includes a coherent optical receiving part performing coherent detection by inputting and mixing local oscillation light and main signal light received through a transmission line with a signal applied at a transmitting side, outputting the signal applied to... Agent:

20140270810 - Frequency error estimating apparatus and method, frequency error compensating apparatus, and optical receiver: Provided is a frequency error estimating apparatus used for a coherent optical receiver, which determines an amplitude of a baseband digital electrical signal converted from a received light signal modulated with a phase and amplitude shift keying, determines, with respect to each determined amplitude, a modulated phase component of the... Agent: Fujitsu Limited

20140270811 - Multi-channel optical receiving module: A multi-channel optical receiving module includes a first substrate disposed on a bench, optical fibers disposed in grooves of the first substrate, a first lens disposed on the first substrate and collimating optical signals through the optical fibers, a second substrate disposed on the bench at a side of the... Agent:

09/11/2014 > 52 patent applications in 20 patent subcategories.

20140255020 - Method, apparatus, and system for disaster recovery of optical communication system: A method, an optical add-drop multiplexer branching unit, and a system for disaster recovery of an optical communication system are provided. The method for disaster recovery of an optical communication system using an optical add-drop multiplexer unit (OADM) includes: detecting a transmission link fault in an optical communication system; and... Agent: Huawei Marine Networks Co., Ltd.

20140255021 - Optical cable testing and management: A method and apparatus for testing an optical cable is provided. In one embodiment, the apparatus may include a receiver for receiving a received pulse train through the optical cable. The apparatus may further include a cross-correlation system in communication with the receiver. The cross-correlation system may be adapted to... Agent: International Business Machines Corporation

20140255022 - Optical network switching node in multi-chassis cluster, optical burst synchronization method, and line card chassis: An embodiment of the present invention provides an optical burst synchronization method. A synchronization method includes: selecting a reference chassis, and transmitting, by an output port corresponding to an FTL in the reference chassis, an optical burst test signal respectively to receive ports corresponding to ORs in other line card... Agent: Huawei Technologies Co., Ltd.

20140255023 - Distributed optical fiber sound wave detection device: A distributed optical fiber sound wave detection device is provided with an optical pulse emission unit that causes an optical pulse to be incident into the optical fiber, and a Rayleigh scattered light reception unit that receives Rayleigh scattered light produced inside the optical fiber. The optical pulse emission unit... Agent: Neubrex Co., Ltd.

20140255025 - Intelligent infrared remote pairing: Systems and methods for associating a remote controller with a device are provided. The systems and methods generally relate to receiving a request from a remote controlled to pair the remote controller to a device at several devices and determining at each of the several devices the strength of the... Agent: Apple Inc.

20140255024 - Method and device for processing a communication network: Method and device for processing a communication network A method and a device for processing a communication network are provided, wherein (a) a first performance parameter of the communication network is determined; (b) a third performance parameter is determined based on the first performance parameter and a second performance parameter,... Agent: Xieon Networks S.a.r.l.

20140255026 - Reconfigurable optical add/drop multiplexor and optical switching node: A colorless, directionless ROADM includes a pair of contentioned add and drop wavelength-selective optical switches, an input wavelength-selective optical switch having one input port, and an output wavelength-selective optical switch having one output port. Unintended input-to-output port couplings, which appear in the “contentioned” add and drop switches, can be mitigated... Agent:

20140255027 - Energy conservation by means of traffic shaping: A method executed by an optical line terminal (OLT) in a passive optical network (PON). The PON includes a plurality of optical network units (ONUs) coupled with the OLT through an optical fiber, the ONUs sharing a bandwidth of the optical fiber. The method includes receiving, from the ONU, an... Agent:

20140255029 - Orthogonal frequency-division multiplexing burst markers: A coax network unit (CNU) receives downstream bursts from a coax line terminal (CLT) and transmits upstream bursts to the CLT. The downstream bursts include start markers that indicate the beginnings of the downstream bursts and may also include pilot symbols. The downstream bursts are continuous across available resource elements... Agent: Qualcomm Incorporated

20140255028 - Sub-rate mapping for lowest-order optical data unit: One embodiment relates a method for communicating data using an optical transport network. Multiple sub-rate client data signals are received from client sources. The sub-rate client data signals each have a data rate which is less than a data rate capacity of a lowest-order data unit. A predetermined number of... Agent: Altera Corporation

20140255030 - Method and apparatus for authentication in passive optical network: A method and apparatus for authentication in a passive optical network are disclosed. In the disclosure, a first terminal serial number of an ONU and a first logic registration code are transmitted from the ONU to an OLT; if the OLT determines that the first terminal serial number does not... Agent: Huawei Technologies Co., Ltd.

20140255031 - Integrated passive optical network (pon) system: An integrated passive optical network system is disclosed. The system comprises an optical distribution network (ODN), a time-division multiplexing (TDM)-optical line terminal (OLT), a wavelength-division multiplexing (WDM)-optical line terminal (OLT), a plurality of time-division multiplexing (TDM)-optical network units (ONUs), and at least one wavelength-division multiplexing (WDM)-optical network unit (ONU) comprising... Agent: National Chiao Tung University

20140255032 - Optical network unit: The present invention provides an apparatus, in particular an optical network unit, which comprises a first part operably coupled to an arm of an optical fiber network, the first part comprises an optical module including an optical-electric interface and/or an electric-optical interface locked on a preset wavelength band, and an... Agent: Xieon Networks S.a.r.l.

20140255033 - Increasing the capacity of a wdm-pon with wavelength reuse: A method of processing optical signals in a passive optical network includes receiving a first signal in a first optical spectrum, and receiving a second signal in a second optical spectrum. The second optical spectrum is different from the first optical spectrum. The method also includes multiplexing the first and... Agent: Google Inc.

20140255034 - Method and system for wireless transmission of of analog signals between antenna and baseband processor: A wireless communication method and system utilizing optical transmission technology to transport analog signals directly to/from the antenna, without ADC/DAC, so that the optical transport facility can be utilized more efficiently and there is no need to adapt the digital data rate to the transport capacity, as the analog transmission... Agent: Zte Usa Inc.

20140255035 - Optical signal transmission method, apparatus and system: An optical signal transmission method includes: obtaining a signal identifier of data to be sent; obtaining corresponding optical frequency slot distribution information according to the signal identifier; and determining a corresponding carrier according to the obtained optical frequency slot distribution information, using the determined carrier to carry the data to... Agent: Huawei Technologies Co., Ltd.

20140255036 - Methods and apparatus for using visible light communications for controlling access to an area: Methods and apparatus for controlling access to secure areas are described. Time varying values are generated from access device identifiers, e.g., door identifiers. The time varying value, e.g., a hashed door identifier value, is transmitted as a VLC signal by a luminaire near the door to which the hashed identifier... Agent: Qualcomm Incorporated

20140255037 - Optical transmission for binary and duobinary modulation formats: A transceiver includes a transmitter and a receiver. The transmitter includes a precoder stage, an encoder stage and a first converter stage. The precoder stage receives an input binary signal and a previously processed binary signal. The encoder stage is electrically coupled to the precoder stage and the first converter... Agent: Semtech Corporation

20140255038 - Visible light communication via solid state lighting devices: A solid-state lighting fixture includes a first group of solid-state light elements, a second group of solid-state light elements, and a light control module. The first group of solid-state light elements is configured to emit visible light at a first wavelength. The second group of solid-state light elements is configured... Agent: Cree, Inc.

20140255039 - Establishing optical coherence using free-space optical links: An apparatus and/or method may be used for distributed synchronization of oscillators at non-collocated stations by means of transmitting and receiving optical signals having frequencies related to a desired oscillator frequency.... Agent: Phase Sensitive Innovations, Inc

20140255040 - Photonic-crystal slab absorber and high-frequency circuit and electronic components, and transmitter, receiver and proximity wireless communication system: The photonic-crystal (PC) slab absorber includes: a two-dimensional (2D)-PC slab composed of semiconducting materials; and a lattice point periodically arranged in the 2D-PC slab, the lattice point for forming resonant-state which can capture an electromagnetic waves incident from an outside by resonating an electromagnetic wave in a band edge of... Agent: Rohm Co., Ltd.

20140255041 - Out of band data transfer over optical connections: Provided herein are various devices for communicating out-of-band (OOB) signals. One device may comprise an in-band controller element, an out-of-band controller element and a modulation circuit operable to modulate a reference clock for the out-of-band signal, while another device may utilize a circuit operable to generate an out-of-band signal based... Agent: Emulex Corporation

20140255042 - Optical receiver and transceiver using the same: An optical receiver is disclosed having a dielectric non-conductive substrate. A ground plane is positioned on the dielectric non-conductive substrate. An optical signal converting photodiode is also positioned on the dielectric non-conductive substrate, and has an optical signal receiver and an electrical signal output. An electrical signal amplifier is provided... Agent: Tyco Electronics Svenska Holdings Ab

20140255043 - Optical communication device with planar optical waveguide: An optical communication device includes a planar optical waveguide, a first substrate, a light emitting element, and a light receiving element. The planar optical waveguide includes a top surface and a light guide portion. The light guide portion includes a first sloped surface and a second sloped surface. The first... Agent: Hon Hai Precision Industry Co., Ltd.

20140255044 - Graphene plasmonic communication link: A signal transfer link includes a first plasmonic coupler, and a second plasmonic coupler spaced apart from the first plasmonic coupler to form a gap. An insulator layer is formed over end portions of the first and second plasmonic couplers and in and over the gap. A plasmonic conductive layer... Agent: International Business Machines Corporation

20140255045 - Externally modulated optical transmitter with chirp control: An optical transmitter includes a laser and an external modulator that is used to modulate the optical signal using amplitude modulation (AM). The AM is accompanied by frequency modulation (FM) of the output signal that is generally detrimental to system performance. Both the laser and the modulator are driven by... Agent: Arris Solutions, Inc.

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