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)
06/1992
06/10/1992EP0489525A2 Improvements relating to optical sensing systems
06/10/1992EP0489444A2 Method for transmission and receipt of coherent light signals
06/10/1992CN1017000B Abaxial optical communication system
06/09/1992US5121419 Computer-aided tomography apparatus
06/09/1992US5121381 Optical switching apparatus for digital signal cross connection and method of interswitch optical transmission of digital signals
06/09/1992US5121244 Optical subscriber network transmission system
06/09/1992US5121243 Wireless optical communication system utilizing a single optical carrier frequency
06/09/1992US5121242 Retro-reflective optical transceiver
06/09/1992US5121241 Transceiver for a bidirectional coherent optical transmission system
06/09/1992CA1303193C Amplifying optical signals
06/09/1992CA1303138C Optical transmitter and/or receiver module
06/09/1992CA1303136C Lightwave systems using optical amplifiers
06/09/1992CA1303118C Wavelength stabilized light source
06/07/1992CA2056643A1 Optical sensing systems
06/05/1992CA2031409A1 Electro-optical detonator
06/03/1992EP0488469A1 Optical transmission system for transmitting analog signals
06/03/1992EP0488417A2 Driver circuit of a tunable laser diode
06/03/1992EP0488241A2 Optical frequency division multiplexing network
06/03/1992EP0488226A2 Optical transmitter
06/03/1992EP0487918A2 Optical bus for computer systems
06/02/1992US5119447 Apparatus and method for externally modulating an optical carrier
06/02/1992US5119392 Second-order predistortion circuit for use with laser diode
06/02/1992US5119391 Automatic frequency control circuit for coherent diversity reception
06/02/1992US5119229 Amplifier for optical fiber telecommunication lines and optical fiber telecommunication lines incorporating said amplifier
06/02/1992US5119226 Infrared network entry permission apparatus
06/02/1992US5119225 Multiple access communication system
06/02/1992US5119224 Apparatus and method for fiber optics communication with dark current correction
06/02/1992US5119223 Bidirectional light waveguide (LWG) telecommunication system and method for wavelength separation mode (bidirectional wavelength separation mode (WDM) between a central telecommunication location and plurality of decentralized telecommunication locations
06/02/1992US5119222 Fault examining apparatus for loop-shaped data transmission system using optical fiber
06/02/1992US5118964 Thermo-electric temperature control arrangement for laser apparatus
05/1992
05/27/1992EP0487392A1 Optical bidirectional multiplexing system and corresponding method
05/27/1992EP0487391A1 Multiple way bidirectional optical transceiver module and optical repeater using this module
05/27/1992EP0486953A2 Second-order predistortion circuit for use with laser diode
05/27/1992EP0486931A2 Distance-measuring method and transmitting and receiving station for carrying out the same
05/27/1992EP0486490A1 Modulated retroreflector system
05/26/1992US5117476 Optical transceiver package with insertable subassembly
05/26/1992US5117469 Polarization-dependent and polarization-diversified opto-electronic devices using a strained quantum well
05/26/1992US5117303 Method of operating concatenated optical amplifiers
05/26/1992US5117196 Optical amplifier gain control
05/26/1992CA1301946C Fast optical cross-connect for parallel processing computers
05/26/1992CA1301502C Strained distributed optical fiber communication system
05/23/1992WO1992010036A1 Test apparatus
05/22/1992CA2055723A1 Second-order predistortion circuit for use with laser diode
05/21/1992WO1992009150A1 An optical network
05/20/1992EP0486208A2 Optical backplane interconnecting circuit boards
05/20/1992EP0486205A2 Method and apparatus for determining the absolute noise figure of optical amplifiers
05/20/1992EP0486172A1 Laser transmitter interlock
05/20/1992EP0486021A2 Optical receiver
05/20/1992EP0485828A2 Optical receiver
05/20/1992EP0485813A2 Optical telecommunications system with optic fiber amplifier
05/20/1992EP0485812A2 Device for the optical heterodyne reception of signals
05/20/1992EP0485490A1 A monitor unit for monitoring an optical waveguide.
05/20/1992EP0485389A1 A method of decoding encoded relative spectral data
05/19/1992US5115440 Delay distortion compensating circuit for optical transmission system
05/19/1992US5115428 Serial array time-slot interchangers
05/19/1992US5115332 Receiver for coherent optical communication
05/19/1992CA1301252C Optical communications network
05/19/1992CA1301251C Bit synchronisation for optical networks
05/17/1992WO1992009159A1 Optical clock recovery
05/15/1992CA2055301A1 Optical backplane interconnecting circuit boards
05/14/1992WO1992008302A1 Fiber optic telecommunications network
05/14/1992DE4137361A1 Electro-optical signal transmission installation - has transmit diode(s) in transmitter(s), emitting wavelength pref. in 830 mm. range
05/13/1992EP0485101A2 Amplified optical fibre systems
05/13/1992EP0485071A2 Undersea communication system
05/13/1992EP0485070A2 Undersea communication system
05/13/1992EP0484912A2 Portable electronic apparatus
05/13/1992EP0484791A2 Apparatus and method for externally modulating an optical carrier
05/13/1992EP0484482A1 Code word recognition unit and its use.
05/12/1992US5113524 Quantum state control apparatus, optical receiver and optical communication system
05/12/1992US5113467 Laser transmitter interlock
05/12/1992US5113466 Molded optical packaging arrangement
05/12/1992US5113459 Optical fiber telecommunication line with separate, optically transmitted service channels
05/12/1992US5113403 Bidirectional free-space optical bus for electronics systems
05/12/1992US5113278 Communication system and apparatus using chip signals
05/12/1992US5113276 Optical communication network using redundant waveguides and two way operation
05/12/1992US5113244 Fiber optic combiner/splitter
05/12/1992US5113151 Equalizing and amplifying circuit in an optical signal receiving apparatus
05/12/1992US5113066 Integrated optical sensor arrangement with detecting means, and means for controlling the optical emission wavelength of the light beam source
05/12/1992CA1300685C Transmitter and transceiver for a coherent optical system
05/12/1992CA1300411C Dispersion transformer having multichannel fiber
05/09/1992WO1992009078A1 Optical memory
05/07/1992DE4141387A1 Data transmission interface for control network e.g. in motor vehicle - uses optical transmission path defined by inner part of mechanical body component
05/06/1992EP0484228A1 Optical transmission process with wavelength offset and corresponding system
05/06/1992EP0484064A2 Broadband optical receiver
05/06/1992EP0483935A2 Active star network for an optical transmission system
05/06/1992EP0483790A2 Switching system of optical transmission lines for protecting from trouble
05/06/1992EP0483551A2 Handoff method and apparatus for mobile wireless workstations
05/06/1992EP0483550A2 Coordination of wireless medium access among a plurality of base stations
05/06/1992EP0483549A2 Control method and apparatus for a wireless data link
05/06/1992EP0256129B1 Optical space switch
05/06/1992EP0172236B1 Method and apparatus for detecting the collision of data packets
05/06/1992CN1016551B Double active-fibre optical amplifier having wide-band signal wavelength
05/05/1992US5111475 Analog optical fiber communication system, and laser adapted for use in such a system
05/05/1992US5111334 Multi-stage fiber-optic amplifier
05/05/1992US5111333 Optical mixer
05/05/1992US5111324 Optical receivers
05/05/1992US5111323 Optical switching system
05/05/1992US5111322 Polarization multiplexing device with solitons and method using same
05/05/1992US5111321 Dual-polarization liquid-crystal etalon filter
05/05/1992US5111047 Collisional ionization detected atomic resonance filter