Patents
Patents for H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125)
06/2004
06/03/2004US20040104340 System and method of automatic dynamic calibration for infrared sensing device
06/03/2004DE10252689A1 Driver information system, with an operating unit and a control and analysis unit where the operating elements are freely configurable relative to the holder
06/02/2004EP1424798A2 Wavelength allocation method of signal light, optical transmission apparatus and wavelength division multiplexing optical transmission system using the method
06/02/2004EP1424795A2 Optical transmission system using optical phase modulator
06/02/2004EP1424794A1 A method for optimising operation of an optical communication link and a receiver therefor
06/02/2004EP1424752A2 Optical system module
06/02/2004EP1423933A2 Technique for channel count and power control in optical networks
06/02/2004EP1423928A1 Photoreceiver assembly for high-powered lasers
06/02/2004EP1068550A4 Optical-transmission system having a split-gain amplifier and a signal-modifying device
06/02/2004EP1066631B1 Optical data storage system utilizing polarization maintaining optical fiber
06/02/2004CN2619422Y Device for eliminating circular net self exciting in light transmission system
06/02/2004CN2619421Y Multiple path video light end machine
06/02/2004CN2619420Y Video frequency light end machine
06/02/2004CN1502183A Wavelength division multiplexed optical communication system having a reconfigurable optical switch and a tunable backup laster transmitter
06/02/2004CN1501619A Optical fibre for wavelength division multiplexed system and manufacturing method thereof
06/02/2004CN1501618A Optical transmission systems using optical amplifiers and wavelength division multiplexing
06/02/2004CN1501617A Optical signal transmission method with long span and over-long span demultiplexing
06/02/2004CN1501599A Optical transmission system using in-line amplifiers
06/02/2004CN1501598A A multi-wavelength single-span long distance transmission method and system
06/02/2004CN1501597A A remote pump transmission system
06/02/2004CN1501596A A method for composing optimum optical orthogonal code
06/02/2004CN1501497A 电子电路装置 Electronic circuit means
06/02/2004CN1501154A 电子电路装置 Electronic circuit means
06/02/2004CN1501109A 多波长编码光开关阵列 Multi-wavelength optical switch array coding
06/02/2004CN1152489C Implementation of dynamic bandwidth distribution of passive optical network in asynchronus transfer mode
06/02/2004CN1152488C Method for measuring distance in passive optical ATM network
06/02/2004CN1152339C Communication system for transmitting accounting instructions
06/02/2004CN1152274C Optical apparatus using virtual image phase array to produce dispersion
06/01/2004US6744992 Synchronous amplitude modulation for improved performance of optical transmission systems
06/01/2004US6744990 WDM optical transmission system and an optical transmission line thereof
06/01/2004US6744989 Optical transmission system, its method, and optical amplification transmission line
06/01/2004US6744988 Device for applying time-delays to optical signals
06/01/2004US6744987 Tertiary optical media interface
06/01/2004US6744964 System and method for controlling variable optical attenuators
06/01/2004US6744958 Apparatus and method of compensating for wavelength dispersion of optical transmission line
06/01/2004US6744942 Optical cross-connect
06/01/2004US6744940 Sensor for a receiving device for cooperation with an optical fiber
06/01/2004US6744795 Laser driver circuit and system
06/01/2004US6744794 System and a method for handling laser communication multiplexing in chaotic secure communications
06/01/2004US6744793 Method and apparatus for stabilizing a broadband source
06/01/2004US6744556 Distributed Raman amplification system
06/01/2004US6744555 Ultrashort-pulse source with controllable wavelength output
06/01/2004US6744546 Multilevel light-intensity modulating circuit
06/01/2004US6744496 Method of measuring the error rate of an optical transmission system and apparatus for implementing the method
06/01/2004US6744495 WDM measurement system
06/01/2004US6744035 Passive, temperature compensated techniques for tunable filter calibration in bragg-grating interrogation systems
06/01/2004CA2353744C Nxn crossconnect switch using wavelength routers and space switches
05/2004
05/29/2004CA2413218A1 Flash optical performance monitor
05/27/2004WO2004045116A1 Device for adequately regulating power of optical signal
05/27/2004WO2004045114A1 Optical receiver
05/27/2004WO2004045113A2 Method of evaluating fiber pmd using polarization optical time domain reflectometry
05/27/2004WO2004045112A2 Method and apparatus for silicon-based optically-pumped amplification using stimulated scattering
05/27/2004WO2004044625A2 Power source for a dispersion compensation fiber optic system
05/27/2004WO2004030154A3 Arrangement for monitoring patch panels at distributor points in data networks
05/27/2004WO2004027461A3 Thermal noise reduction technique for optical receivers using identical amplifier circuits
05/27/2004WO2003102659A3 Demultiplexing optical signal receiver photonic integrated circuit (rxpic) and associated transmitter and method of testing a photonic integrated circuit
05/27/2004WO2003040769A3 Polarization control using polarization modulation
05/27/2004WO2003040768A3 Polarization controlling
05/27/2004US20040103440 Transmitter in a digital return link for use in an HFC network
05/27/2004US20040102874 Method and apparatus for controlling an optical transponder
05/27/2004US20040102084 Method for in-situ continuity check on an optical bus
05/27/2004US20040101319 Wavelength stabilization module having light-receiving element array and method of manufacturing the same
05/27/2004US20040101318 Optical transmitter with tap type optical filters
05/27/2004US20040101317 Optical frequency modulated transmitter
05/27/2004US20040101316 Semiconductor electro-absorption optical modulator integrated light emission element, light emission element module and optical transmission system
05/27/2004US20040101315 Duobinary optical transmission apparatus
05/27/2004US20040101314 Duobinary optical transmission apparatus
05/27/2004US20040101313 Optical repeater
05/27/2004US20040101312 AC power source light modulation network
05/27/2004US20040101311 Distribution of a synchronization signal in an optical communication system
05/27/2004US20040101309 Optical communication imager
05/27/2004US20040101308 Optical communications imager
05/27/2004US20040101305 Fabry-perot laser apparatus mode-locked to multi-frequency lasing light source and optical transmission apparatus using the same
05/27/2004US20040101301 Optical pulse timing detection apparatus, optical pulse timing detection method, optical pulse timing adjustment apparatus, and optical pulse timing adjustment method
05/27/2004US20040101300 Method and Circuit for Determing the Optical Signal to Noise Ratio for Optical Transmission
05/27/2004US20040101263 Dispersion compensating optical fiber for SMF and transmission link including same
05/27/2004US20040101241 Fiber grating/DC fiber hybrid dispersion compensation module
05/27/2004US20040101239 Chromatic-dispersion compensator
05/27/2004US20040101233 Method and apparatus for detecting optical switch fault by monitoring optical output transitions
05/27/2004US20040101227 Polarization dispersion compensating apparatus
05/27/2004US20040100988 Method for the asynchronous arbitration of a high frequency bus in a long latency environment
05/27/2004US20040100782 Backplane assembly with board to board optical interconnections and a method of continuity checking board connections
05/27/2004US20040100695 Receiver for OTDM/PDM optical signals
05/27/2004US20040100694 PMD Emulator
05/27/2004US20040100688 Optical amplifier and optical amplifier control method
05/27/2004US20040100687 Integrated memory mapped controller circuit for fiber optics transceiver
05/27/2004US20040100685 Low cost flexible automated optical power management
05/27/2004US20040100683 Raman amplifier
05/27/2004US20040100682 Multi-wavelength generating method and apparatus based on flattening of optical spectrum
05/27/2004US20040100317 Optical signal receiving circuit and optical signal receiving semiconductor device
05/27/2004US20040099858 Semiconductor quantum dot optical amplifier, and optical amplifier module and optical transmission system using the same
05/27/2004DE10251889A1 Receiver for angle modulated optical signals has optical resonator to which optical signal is fed and in front of which optical output coupling device for light reflected from resonator is arranged
05/26/2004EP1422966A2 Wavelength converter and optical cross-connect system using the same
05/26/2004EP1422845A2 Optical dispersion monitoring method and apparatus
05/26/2004EP1422844A1 Optical repeater
05/26/2004EP1422843A1 Duobinary optical transmission apparatus
05/26/2004EP1422842A2 Duobinary optical transmission apparatus
05/26/2004EP1422841A1 Control station apparatus, base station apparatus, and optical transmission method
05/26/2004EP1422794A2 Fabry-perot laser apparatus mode-locked to multi-frequency lasing light source and optical transmission apparatus using the same
05/26/2004EP1421717A1 Polarization mode dispersion compensator based on degree of polarization