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)
05/1992
05/05/1992US5110368 Device for spatially transmitting a plurality of signals over a fiberoptic monofilament
05/05/1992CA1300230C Television signal detector
05/04/1992EP0542741A4 Serial array time-slot interchangers.
05/02/1992CA2050751A1 Asynchronous x-bit signalling in ds2 signal format
04/1992
04/30/1992WO1992007430A1 Quasi-soliton communication system
04/29/1992EP0482943A2 Bidirectional optical transmission method and apparatus therefor
04/29/1992EP0482520A1 Constant-current circuit for light-emitting element
04/29/1992EP0482472A2 Arrangement for optical data transmission between satellites
04/28/1992US5109446 Opto-electronic correlator including a spiral light waveguide
04/28/1992US5109445 Strained distribution optical fiber communication system
04/28/1992US5109444 Integrated type optical node and optical information system using the same
04/28/1992US5109443 Detection of stress applied to an optical fiber
04/28/1992US5109441 Fiber optic external modulator
04/28/1992US5109296 Transmission line switching system
04/28/1992CA1299656C Protection against loss or corruption of data upon switchover of a replicated system
04/27/1992CA2054245A1 Bidirectional optical transmission method and apparatus therefor
04/22/1992EP0481954A1 Device for the connection of subscriber terminals using optical transmission
04/22/1992EP0481349A2 Master clock distributing method and apparatus using same
04/22/1992EP0481170A2 Subscriber interface for a fiber optic communications terminal
04/21/1992US5107512 Frequency stabilization of a laser beam by using a birefrigent body
04/21/1992US5107490 Ring-type communication network
04/21/1992US5107362 Optical transmission apparatus
04/21/1992US5107361 Optical subscriber network
04/21/1992US5107360 Optical transmission of RF subcarriers in adjacent signal bands
04/21/1992US5107358 Method and apparatus for transmitting information
04/19/1992WO1992007432A1 Passive optical network
04/19/1992WO1992007431A1 Passive optical network
04/15/1992EP0480562A2 Semiconductor laser device
04/15/1992EP0480410A2 Infrared ray receiving circuit
04/15/1992EP0480231A2 Optical emitter-receiver module
04/15/1992EP0480078A1 Measuring device with non-electrical signal- and energy transfer
04/15/1992EP0480042A1 Device for evaluating signal transmission performance of optical communication equipment
04/15/1992CN1016306B Technique for reducing distortion characteristics in fiber-optic links
04/14/1992US5105446 Digital method of correcting non-linearity in a transmission chain, and apparatus implementing the method
04/14/1992US5105295 Four level FSK optical signal transmission with optical decoding and direct detection
04/14/1992US5105294 Digital communicating method and apparatus
04/14/1992US5105292 Asynchronous optical communication system
04/14/1992US5105071 Optical data transfer device
04/09/1992DE4031625A1 Optical polarisation diversity homodyne receiver with local lasers - incorporates two homodyne reception branches with frequency regulated by threshold logic selecting branch with input signal
04/09/1992DE4031624A1 Optical polarisation-diversity homodyne receiver with local laser - incorporates two homodyne reception branches with frequency regulated by threshold logic selecting branch with stronger signal
04/09/1992DE4030822A1 Wide-angle optical communications receiver with directional lens - has easily-cleaned smooth outer face and prismatic inner face well protected from atmos. pollution
04/08/1992EP0479333A2 Wireless remote control system of electronic sets
04/08/1992EP0479256A2 Homodyne optical receiver equipment
04/08/1992EP0479227A1 Device for fixing and mounting unitary modules on a supporting frame
04/08/1992EP0479226A1 Cassette for optical junction
04/08/1992CN2101246U Optical-isolation point type galvanometer
04/07/1992US5103494 Optoelectronic arrangement
04/07/1992US5103453 Method and means for controlling the frequency and power output of a tunable diode laser
04/07/1992US5103340 Multiple-cavity optical filter using change of cavity length
04/07/1992CA1298638C Optical signal processing device
04/07/1992CA1298617C Rf and light signals transmitting system, particularly for space telecommunications
04/07/1992CA1298502C Optical fiber dispersion transformer
04/06/1992CA2052850A1 Undersea communication system with use of physical environment
04/06/1992CA2052837A1 Undersea communication system with use of physical environment
04/02/1992WO1992005645A1 Electronically switched multiple-channel optical receiver
04/02/1992WO1992005642A1 An optical fibre amplifier with coupling of pump energy from several pump sources
04/02/1992WO1992001346A3 Multimedia high speed network
04/02/1992DE4031043A1 Laser beam transmission and reception device - regulates feedback power using measured intensity of reflected beam
04/02/1992DE4030782A1 Optical interface for data handling devices - uses opto-electronic coupler with optical fibre link for galvanic separation
04/01/1992EP0478484A2 Fiber optic communication network with reduction of intersymbol interference
04/01/1992EP0478296A2 Fiber identifier
04/01/1992EP0478204A2 Thermo-electric temperature control arrangement for laser apparatus
04/01/1992EP0478002A2 Wireless remote control system of electronic sets
04/01/1992EP0477952A2 Reconfigurable RF matching circuit
04/01/1992EP0477875A2 Optical communication system and transmitting apparatus for use therein
04/01/1992EP0477699A2 Optical communication system
04/01/1992EP0477659A1 Method and device for assigning slots in a star network
04/01/1992EP0435939A4 Dual mode light emitting diode/detector diode for optical fiber transmission lines
04/01/1992CN1060000A Self-check optical fibre sensor circuit
03/1992
03/31/1992US5101461 Optical fiber amplifier apparatus
03/31/1992US5101450 Quadrature optical phase modulators for lightwave systems
03/31/1992US5101290 High-performance packet-switched wdm ring networks with tunable lasers
03/31/1992CA1298116C Bidirectional optical space switch
03/29/1992CA2051527A1 Fiber identifier
03/29/1992CA2049680A1 Reconfigurable rf matching circuit
03/25/1992WO1992005641A1 Universal remote control system
03/25/1992EP0476968A2 Clock recovery circuit
03/25/1992EP0476830A2 Method of operating concatenated optical amplifiers
03/25/1992EP0476569A2 Mobile communication system
03/25/1992EP0476566A2 Optical communication systems and optical nodes for use therein
03/25/1992EP0476444A1 Optical transceiver
03/25/1992EP0476091A1 Bit and frame synchronizing unit for an access node in an optical transmission device.
03/25/1992CN2100033U Infrared telecontrol fully automatic preselective television aerial
03/24/1992US5099471 Ultrashort optical pulse modulating equipment
03/24/1992US5099351 Four level FSK optical signal transmission with optical decoding and coherent detection
03/24/1992US5099350 Method and device for the optical filtering and photodetection of intensity-modulated optical signals
03/24/1992US5099349 Optical transmission line system
03/24/1992US5099347 Fast packet and frequency switch
03/24/1992US5099346 Infrared communications network
03/24/1992US5099114 Optical wavelength demultiplexer
03/24/1992CA1297949C Method and apparatus for the operation of a distributed feedback laser
03/19/1992WO1992004785A1 Optical communications system
03/19/1992DE4029559A1 Mfg. optical transmitter or receiver unit - inserting spacers between substrate and carrier for optical lens for diode
03/19/1992DE4029399A1 Opto-coupler for digital signal transmission - uses control stage for counter-phase control of parallel elements
03/18/1992EP0475640A2 Polarization switching light source, optical receiver, and coherent optical transmission system
03/18/1992EP0475376A2 Apparatus and method for linearizing the operation of an external optical modulator
03/18/1992EP0475331A2 Light transmission system with subcarriers
03/18/1992EP0475016A2 Wavelength-multiplexed optical network system
03/18/1992EP0474921A1 Optical transmission network with frequency locking means
03/18/1992EP0474914A1 A bi-directional telecommunications system