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)
12/2004
12/15/2004EP1487242A2 Electric circuit for direct modulated semiconductor radiation source
12/15/2004EP1487138A1 Apparatus comprising optical circuits linked to an optical fibre cable
12/15/2004EP1487137A1 Polarization-shaped duobinary optical transmission apparatus
12/15/2004EP1487136A2 Asymmetric broadband optical wireless network
12/15/2004EP1486805A1 Large-effective-area inverse dispersion compensating fiber, and transmission line incorporating the same
12/15/2004EP1486014A2 Optically powered and controlled optical switch
12/15/2004EP1486013A1 System and method for configuring a home appliance communications network
12/15/2004EP1485976A2 Absolutely calibrated periodic filters and sources
12/15/2004EP1384098A4 Method of operating a noise-compensating gain controller for an optical amplifier
12/15/2004EP1377927A4 Information card system
12/15/2004EP1157488B1 Method and system for optimising the pulse form of an amplitude modulated optical signal
12/15/2004EP1060426A4 An optical device for dispersion compensation
12/15/2004EP0917784B1 Method for optimising a mostly optical network
12/15/2004CN2664296Y Monitoring circuit for optical transmitting-receiving integrated module
12/15/2004CN1555163A Recovering method for optical transmission circular network wrong connection business
12/15/2004CN1555147A Integrated dynamic light add and drop multiplexer module based on filter wave light switch unit
12/15/2004CN1555141A Device and method for realizing flexible networking used in time division duplex synchronous system
12/15/2004CN1555140A 遥控器 Remote Control
12/15/2004CN1555139A Control method and control circuit of output light power and extinction ratio of light transmitter
12/15/2004CN1555099A Photoelectric detector for 650nm optical fiber communication and its producing method
12/15/2004CN1554965A Return-to-zero double stage photoelectric external modulator of parallel structure
12/15/2004CN1554960A Wave guide type light adjustable attenuator and its compensating method for polarizing relative loss
12/15/2004CN1180578C Automatic protecting switch controller for optical self-healing ring and its control method
12/15/2004CN1180549C Polarization dispersion system used in wavelength-division multiplex signals to compensate other information channels
12/15/2004CN1180548C Optical transmitting unit and system
12/15/2004CN1180283C Optical attenuator with double control loop
12/15/2004CN1180281C Single-mode optical fiber and its prepn and use
12/14/2004US6832054 High speed optical receiver implemented in one chip
12/14/2004US6832053 Delayed interference wavelength converter and/or 2R regenerator
12/14/2004US6832052 Optical transponder
12/14/2004US6832051 Dispersion managed optical transmission links for wavelength division multiplexed systems
12/14/2004US6832050 Method and system for reducing intra-channel nonlinear effects in highly dispersed optical pulse transmission
12/14/2004US6832048 Dispersion compensation apparatus and a dispersion compensation system
12/14/2004US6832047 Optical transmission system for frequency-multiplexed signal
12/14/2004US6832020 Variable wavelength dispersion compensator
12/14/2004US6832017 Bidirectional add/drop multiplexer and bidirectional add/drop amplifier module for band-split bidirectional networks
12/14/2004US6831777 Optical transmission system and method
12/14/2004US6831775 Method and apparatus for wavelength conversion
12/14/2004US6831774 Multi-wavelength generating method and apparatus based on flattening of optical spectrum
12/14/2004CA2361527C Opto-electronic oscillators having optical resonators
12/14/2004CA2173942C A cross-connect for an optical network
12/09/2004WO2004107798A1 Optical burst switch network system and method with just-in-time signaling
12/09/2004WO2004107629A2 Method and system for determining the gain for an optical signal
12/09/2004WO2004107628A1 A light source cable of lasing that is wavelength locked by an injected light signal
12/09/2004WO2004107627A1 A method for conveying management information
12/09/2004WO2004107626A1 Optical wavelength multiplex access system
12/09/2004WO2004107625A1 Method and system for identification of channels in an optical network
12/09/2004WO2004107616A2 System and method of optical data communication with multiple simultaneous emitters and receivers
12/09/2004WO2004107611A1 Laser diode extinction ratio control method and circuit, integrated circuit, transmitter, and communication system
12/09/2004WO2004107610A1 Signal waveform deterioration compensator
12/09/2004WO2004107510A2 Laser pulse generator
12/09/2004WO2004107037A1 Deep ultraviolet unit-magnification projection optical system and projection exposure apparatus
12/09/2004WO2004106997A2 Laser driver circuit and system
12/09/2004WO2004106883A1 Vehicle tag used for transmitting vehicle telemetry data, system and method for transmitting vehicle telemetry data
12/09/2004WO2004019072A3 Interface between terrestrial optical terminal and undersea optical transmission path
12/09/2004US20040249557 Vehicle tag used for transmitting vehicle telemetry data
12/09/2004US20040249485 Intelligent sensor platform
12/09/2004US20040247327 Optical receiver having an open loop automatic gain control circuit
12/09/2004US20040247326 Signal light transmitter including variable optical attenuator
12/09/2004US20040247325 Phase modulation circuit, test apparatus, and communication system
12/09/2004US20040247324 Filtered three-level transmitter
12/09/2004US20040247323 Illuminator including optical transmission mechanism
12/09/2004US20040247320 Optical communication system with suppressed SBS
12/09/2004US20040247319 Characterization of a transmission path of an optical signal having an optical communication signal
12/09/2004US20040247318 Optical network system and controller
12/09/2004US20040247316 System and method for performing in-service fiber optic network certification
12/09/2004US20040247314 Optical communication system
12/09/2004US20040247313 Media converter
12/09/2004US20040247312 Optical communication system
12/09/2004US20040247270 Optical transmission line and optical transmission system
12/09/2004US20040247246 Optical power equalizer in a passive optical network
12/09/2004US20040247238 Spatially resolved equalization and forward error correction for multimode fiber links
12/09/2004US20040247234 Optical bypass method and architecture
12/09/2004US20040247233 Method of providing a low cost semiconductor transmitter photonic integrated circuit (TxPIC) chip
12/09/2004US20040247057 Automatic gain control apparatus with short settling time
12/09/2004US20040246568 Optical amplifier having polarization mode dispersion compensation function
12/09/2004US20040246567 Gain-clamped optical amplifier
12/09/2004US20040246566 Optical transmission system
12/09/2004US20040246477 Optical spectrum analyzer
12/09/2004US20040246466 Method and apparatus for channel detection
12/09/2004US20040245436 Light-receiving circuit capable of compensating a temperature dependence of an optical sensitivity of a photodiode
12/09/2004DE10320814A1 Verfahren zur optischen Übertragung von digitalen Signalen A method for optical transmission of digital signals
12/09/2004DE10320333A1 Electric circuit for directly modulated semiconducting radiation source has circuit arrangement that reduces or inhibits peaking of falling signal edge if flux voltage falls below defined value
12/09/2004CA2526463A1 A method for conveying management information
12/08/2004EP1484938A1 Infrared steering method and infrared steering system
12/08/2004EP1484852A2 Free-space optical communication system
12/08/2004EP1484851A1 Faraday variable optical attenuator and optical transmitter including it
12/08/2004EP1484726A1 Optical output device, relay device, and program controlling optical output device.
12/08/2004EP1483860A1 Add/drop node for an optical communications network
12/08/2004EP1483855A2 Apparatus for dispersion compensating a signal that propagates along a signal path
12/08/2004EP1483854A1 Dynamic polarization mode dispersion emulator
12/08/2004EP1483853A2 Optical fiber communication systems with brillouin effect amplification
12/08/2004EP1483852A1 Optical pulse analyzer
12/08/2004EP1483851A1 Control of avalanche photodiodes bias voltage
12/08/2004EP1483837A1 Wireless extension arrangement for a communications system
12/08/2004EP1483810A2 Control circuit for optoelectronic module with integrated temperature control
12/08/2004EP1483774A2 Avalanche photodiode controller circuit for fiber optics transceiver
12/08/2004EP1342106A4 Point-to-multipoint passive optical network that utilizes variable-length packets and variable-length upstream tine slots
12/08/2004CN2662539Y Structure of pluggable single fiber twoway light transceiver
12/08/2004CN2662538Y Near-receiving sensing apparatus for automatic door