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)
07/2000
07/26/2000EP1021873A1 System for providing location-specific data to a user
07/26/2000CN2389447Y 100 M bps optical fibre receiving/transmitting apparatus for communication of computer Ethernet
07/26/2000CN2389446Y 10 M bps optical fibre receiving/transmitting apparatus for communication of computer Ethernet
07/26/2000CN1261227A Apparatus for image signal transmission
07/26/2000CN1261226A Light emitting circuit with compatibility of conventional mode with burst mode
07/26/2000CN1261164A Optical filter, and device and method for monitoring optical channels thereby
07/25/2000US6094519 Gain equalizing device
07/25/2000US6094296 Optical amplification apparatus
07/25/2000US6094285 All optical RF signal channelizer
07/20/2000WO2000042727A1 Optical communications networks utilizing frequency division multiplexing
07/20/2000WO2000042721A1 Radio frequency receiver circuit
07/20/2000WO2000042720A1 Optical fibre transmission system with chromatic dispersion compensation
07/20/2000WO2000042719A1 Apparatus and method for improved connectivity in wireless optical communication systems
07/20/2000WO2000021230A3 Wdm transmitter and receiver
07/20/2000WO2000020899A3 Flexible, modular, compact fiber optic switch
07/20/2000CA2360873A1 Optical communications networks utilizing frequency division multiplexing
07/20/2000CA2360403A1 Radio frequency receiver circuit
07/20/2000CA2296142A1 Emergency equipment for wavelength multiplexed sources
07/20/2000CA2292439A1 Duplex optical transmission system
07/19/2000EP1021004A1 Method and apparatus for the stabilization of optical solitons
07/19/2000EP1019991A1 Optical amplifier apparatus
07/19/2000EP1019798A2 Method and apparatus for detecting the presence of a remote device and providing power thereto
07/19/2000EP1019763A1 Fiber optic rotary joint
07/19/2000EP1019164A1 System for and method of processing data, and apparatus and method of sending and receiving data
07/19/2000EP0988663A4 Communications system
07/19/2000EP0931370A4 Lossless optical transmission system architecture
07/19/2000CN1260926A NxM optical wavelength routing switch
07/19/2000CN1260480A Optical signal monitoring apparatus and method
07/19/2000CA2293934A1 Free space optical broadband access system
07/18/2000US6091864 Linear optical modulator for providing chirp-free optical signals
07/18/2000US6091747 Circuit and method for driving laser diode
07/18/2000US6091740 Bandwidth management method and circuit, communication apparatus, communication system, and dual-queue network unit
07/18/2000US6091542 Optical fiber amplifier for amplifying signal lights propagating in two opposite directions
07/18/2000US6091541 Multichannel 3-stage optical fiber amplifier
07/18/2000US6091540 Optical amplifier
07/18/2000US6091539 Optical amplifier apparatus and control method thereof, and optical transmission system using optical amplifier apparatus
07/18/2000US6091538 Gain equalizing apparatus
07/18/2000US6091535 Optical transmitter and optical transmission system with switchable chirp polarity
07/18/2000US6091531 Differential charge and dump optoelectronic receiver
07/18/2000US6091530 Low power infrared communication system
07/18/2000US6091529 Channel allocation method in connection with data transmissions in the optical frequency range
07/18/2000US6091528 Optical communication system of space propagation type
07/18/2000US6091527 Communications device having an optical bus, and a method for controlling its operation
07/18/2000US6091526 Light source device for frequency division multiplexed optical communications
07/18/2000US6091525 Spectral monitoring device and method using data correlation for WDM systems
07/18/2000US6091523 Multi-channel receiver
07/18/2000US6091495 Optical interferometer and signal synthesizer using the interferometer
07/18/2000US6091074 System for directing a laser beam toward an active area
07/18/2000US6091073 Optoelectric coupler
07/18/2000US6091025 Electrically optimized hybird "last mile" telecommunications cable system
07/18/2000CA2139092C Receiving system having a large dynamic range
07/13/2000WO2000041430A1 Wavelength-modular optical cross-connect switch
07/13/2000WO2000041351A2 Monitoring of signal wavelengths in optical fibre
07/13/2000WO2000041349A2 A method and coupling to change the wavelength of an optical transmitter in a system using wavelength division multiplexing
07/13/2000WO2000041346A1 Optical amplifier with power dependent feedback
07/13/2000WO2000041345A1 Measuring the signal quality in digital optical fiber transmission networks by evaluating the signal histogram
07/13/2000WO2000041344A1 Polarization mode dispersion compensation via an automatic tracking of a principal state of polarization
07/13/2000WO2000041274A1 A switch or connector
07/13/2000WO2000041012A1 Bandwidth-variable optical filter
07/13/2000WO2000040892A1 Lighting system
07/13/2000WO2000018042A3 Tuneable add/drop multiplexer
07/13/2000WO1999014915A8 Process scheduling in computer network
07/13/2000WO1999012297A9 Arrangement and method relating to optical transmission
07/13/2000CA2358386A1 Wavelength-modular optical cross-connect switch
07/13/2000CA2358185A1 Polarization mode dispersion compensation via an automatic tracking of a principal state of polarization
07/13/2000CA2357496A1 Optical amplifier with power dependent feedback
07/12/2000EP1018812A1 Optical fiber WDM transmission system with chromatic dispersion compensation
07/12/2000EP1018666A1 Raman amplifier, optical repeater, and raman amplification method
07/12/2000EP1018656A1 Optical fibre with low slope of chromatic dispersion
07/12/2000EP1018229A1 Device for transmission of optical signals and monitoring signals
07/12/2000EP1018195A1 Optical amplifier with actively controlled spectral gain and fiber light source with desired output spectrum
07/12/2000CN1259809A Bilateral zero degree angle down and upper load optical wave division and composite use parts
07/12/2000CN1259806A Polarization dispersion method used in one wavelength-division multiplex signals to compensate other information channels
07/12/2000CN1259804A Vehicle carried hand-free telephone system
07/12/2000CN1054440C Suppression of noise and distortion in fiberoptic systems
07/11/2000US6088730 Methods and apparatus for downloading data between an information processing device and an external device via a wireless communications technique
07/11/2000US6088500 Expanded mode wave guide semiconductor modulation
07/11/2000US6088497 Apparatus and method for tapping optical transmissions for analysis of optical protocols
07/11/2000US6088381 System for transporting frequency hopping signals
07/11/2000US6088152 Optical amplifier arranged to offset Raman gain
07/11/2000US6088147 Method and apparatus for transmitting signals in an optical fiber
07/11/2000US6088144 Detection of frequency-modulated tones in electromagnetic signals
07/11/2000US6088143 Remote infrared password key system and methods for controlling the same
07/11/2000US6088142 System and method for precision wavelength monitoring
07/11/2000US6088141 Self-healing network
07/11/2000US6087899 Optical transmitter module, and semiconductor integrated circuit capable of increasing gain and band of amplifier constructed from FET
07/11/2000US6086209 Mirror holder and optical axis correcting device using the same
07/06/2000WO2000039629A2 Acousto-optical device
07/06/2000WO2000039614A1 Optical communication apparatus
07/06/2000WO2000013350A3 Method and apparatus for optical performance monitoring in wavelength division multiplexed fiber optical systems
07/06/2000DE19962603A1 Motor bike communication device, with loudspeaker and microphone built into helmet worn by driver or pillion passenger and with infrared transmitter/receiver
07/06/2000CA2357017A1 Acousto-optical device
07/05/2000EP1017245A2 Transmission system, and station unit and remote units to be used therein
07/05/2000EP1017243A2 Optical switch and optical switched network
07/05/2000EP1017192A1 Automatic protection system for an optical transmission system
07/05/2000EP1016884A2 Interferometric optical device including an optical resonator
07/05/2000EP1016316A1 Method or wireless transmission of audio signals, audio equipment and audio playback device
07/05/2000EP1016252A2 Process scheduling in computer network
07/05/2000EP1016244A2 Communications network
07/05/2000EP1016243A1 Distributed ethernet hub