| 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) |
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| 01/30/1991 | EP0410445A2 Optical repeater having means for preventing malfunction due to the presence of noise |
| 01/30/1991 | EP0410056A1 Measurement of characteristics of broadcast optical networks |
| 01/30/1991 | CN1048961A Unit for amplifying light signals in optical fibre transmission line |
| 01/29/1991 | US4989212 Laser diode phase modulation technique |
| 01/29/1991 | US4989201 Optical communication system with a stabilized "comb" of frequencies |
| 01/29/1991 | US4989200 Coherent subcarrier multiplexed optical communication system |
| 01/29/1991 | US4989199 Photonic switch architecture utilizing code and wavelength multiplexing |
| 01/29/1991 | US4988973 Steering wheel |
| 01/24/1991 | DE3923502A1 Electro-optical modulator-demodulator - esp. heterodyne laser doppler anemometer |
| 01/23/1991 | EP0409660A2 Improvements relating to optical systems |
| 01/23/1991 | EP0409260A2 Receiver for coherent optical communication |
| 01/23/1991 | EP0409259A2 Equalizing and amplifying circuit in an optical signal receiving apparatus |
| 01/23/1991 | EP0409258A2 A fiber optical amplifier |
| 01/23/1991 | EP0409074A2 Optical-electronic device |
| 01/23/1991 | EP0409012A1 Unit for amplifying light signals in optical fiber transmission lines |
| 01/23/1991 | EP0408905A2 Optical fiber telecommunication line comprising amplifiers of the transmitted signals and amplifiers for said line |
| 01/23/1991 | EP0408897A2 Optical emitter for electrical data signals |
| 01/23/1991 | EP0408861A2 Polarization control of bidirectionally transmitted beams by a single polarization controller |
| 01/23/1991 | EP0408852A2 Fiber optic connector assembly and adapter for use therewith |
| 01/22/1991 | US4987607 Efficient dynamic phasefront modulation system for free-space optical communications |
| 01/22/1991 | US4987298 Automatic gain control apparatus which adjusts bias and gain to maximize signal to noise ratio |
| 01/22/1991 | CA1279413C Optical wavelength-division multiplex transmission system with an optical filter for spontaneous emission noise |
| 01/22/1991 | CA1279373C Simultaneous transmission of led and laser signals over single mode fiber |
| 01/22/1991 | CA1279372C Non-electronic gain control |
| 01/17/1991 | DE3922800A1 Laser diode transmitter with conventional laser module - has Peltier cooler coupled to source at AC voltage, inverse to that of laser diode |
| 01/17/1991 | DE3922430A1 Humidity monitor for fibre=optic cable section - uses optical fibre sharply increasing attenuation if dampness enters cable and connected to measurer and evaluator |
| 01/16/1991 | EP0408413A1 Optical information transmission system, particularly for aircraft |
| 01/16/1991 | EP0408394A1 Optical communications network |
| 01/16/1991 | EP0407919A2 Optical transmitters linearized by means of parametric feedback |
| 01/16/1991 | CN1011277B Protocols for very high-speed optical lens |
| 01/15/1991 | CA1279133C Wavelength sensitive optical devices |
| 01/15/1991 | CA1279100C Optically controlled selector |
| 01/14/1991 | WO1991001066A1 Optical communications network |
| 01/10/1991 | WO1991000659A1 Optoelectronic test apparatus for communicating with a receiver |
| 01/09/1991 | EP0406865A2 Demodulation circuit |
| 01/08/1991 | US4984297 Four level frequency shift keying optical communication apparatus |
| 01/08/1991 | US4983021 Modulated retroreflector system |
| 01/08/1991 | US4983011 Optoelectrical connector device and optical plug socket therefor |
| 01/08/1991 | US4983010 System for connecting light waveguide buses and coaxial cable buses |
| 01/08/1991 | US4983008 Telephone system |
| 01/08/1991 | CA1278711C Dental suction apparatus |
| 01/07/1991 | CA2020488A1 Demodulation circuit |
| 01/03/1991 | DE4010574A1 Bus oriented local communications network - has voltage source within each optical star distributor for standard peripherals and optical transmission-reception devices |
| 01/02/1991 | EP0405801A2 Optical amplifier-photodetector assemblage |
| 01/02/1991 | EP0405419A2 Self-aligning analog laser transmitter |
| 01/02/1991 | EP0404906A1 Signal power control system for fiber optic communication systems |
| 01/02/1991 | EP0404874A1 Optical data link system, and methods of constructing and utilizing same |
| 01/02/1991 | CA1278626C Asynchronous communications system |
| 01/01/1991 | US4982446 Bit synchronization for optical networks |
| 01/01/1991 | US4982445 Laser beam communication between spacecraft |
| 12/27/1990 | EP0404301A2 Optoelectronic apparatus and method for its fabrication |
| 12/27/1990 | EP0404054A2 Direct modulation phase-shift-keying system and method |
| 12/27/1990 | EP0403991A2 Optical distribution of analog and digital signals using optical modulators with complementary outputs |
| 12/27/1990 | EP0240512B1 Frequency referencing system and method |
| 12/27/1990 | EP0228434B1 Optical coupling assembly |
| 12/26/1990 | CN2068286U Infrared multichannel independent remote socket |
| 12/26/1990 | CN1048133A Device and method for amplifying optical signals |
| 12/26/1990 | CN1048085A 动力传递 Power transmission |
| 12/26/1990 | CN1011017B Method for transmitting optical signal in both directions through light guide |
| 12/25/1990 | US4980892 Optical system including wavelength-tunable semiconductor laser |
| 12/25/1990 | US4980891 Clocked optical regenerator and other optoelectronic functional circuits |
| 12/25/1990 | US4979825 Device for measuring optical frequency modulation characteristics |
| 12/25/1990 | US4979790 Guided-wave optical wavelength duplexer |
| 12/25/1990 | US4979787 Optical-electronic interface module |
| 12/22/1990 | CA2014440A1 Optoelectronic apparatus and method for its fabrication |
| 12/20/1990 | DE3907423A1 Circuit arrangement for transmitting optical signals via optical waveguides |
| 12/19/1990 | EP0403455A2 Arrangement for controlling the bandwidth in equipment for transmitting via singel-mode fibre regardless of signal format |
| 12/19/1990 | EP0403070A2 Optical fibre lattice signal processors |
| 12/19/1990 | EP0403029A1 Method for connecting subscribers via a system of optical fibre cables, to signal processing means in a network centre, and optical network in conformity with that method |
| 12/19/1990 | EP0402813A2 Power transmission |
| 12/19/1990 | EP0402767A2 Method and device for optical signal amplification |
| 12/19/1990 | EP0152423B1 Maintenance response signalling arrangement for a digital transmission system |
| 12/18/1990 | US4979235 Polarization controller for use in optical fiber communication system |
| 12/18/1990 | US4979234 Saturated semiconductor laser amplifier for compensation of optical fibre dispersion |
| 12/18/1990 | US4979170 Alternating sequential half duplex communication system |
| 12/18/1990 | US4978190 Servo-controlled light coupling between a light-emitting component and an optical fiber |
| 12/18/1990 | CA1278042C Optical bus communication system utilizing frame format signals |
| 12/18/1990 | CA1278023C Monitoring and controlling radiation source stability |
| 12/12/1990 | EP0402295A1 Method and system for transmitting signals over a fibre optic link |
| 12/12/1990 | EP0402044A2 Optical receivers |
| 12/12/1990 | EP0401558A2 Method for making an heterodyne optical receiver insensitive to phase and/or polyrisation for a DPSK or ASK modulated emitting signal |
| 12/12/1990 | EP0401557A2 Method to achieve optical heterodyne reception, insensitive to phase and/or polarization, for an FSK-modulated signal |
| 12/12/1990 | CN1010825B Method and apparatus for channelized serial transmission of redundantly encoded binary data |
| 12/11/1990 | US4977620 Optical homodyne detection |
| 12/11/1990 | US4977618 Infrared data communications |
| 12/11/1990 | US4977593 Optical communications network |
| 12/05/1990 | EP0401126A1 Self-heterodyning optical signal transmission method and transmission system with switching matrix implementing the method |
| 12/05/1990 | EP0400880A2 Optical system including wavelength-tunable semiconductor laser |
| 12/04/1990 | USRE33474 Optical fiber bandwidth limiting method |
| 12/04/1990 | USH855 Optical beam switching circuit for photovoltaic energy conversion |
| 12/04/1990 | US4975926 Wireless indoor data communication system |
| 12/04/1990 | US4975899 Optical broadcast network |
| 12/04/1990 | US4975566 First stage circuit for an optical receiver |
| 12/04/1990 | CA1277404C Apparatus comprising raman-active optical fiber |
| 12/04/1990 | CA1277364C Apparatus for obtaining derivative of characteristic curve, and method of controlling operation, of electronic devices |
| 12/02/1990 | CA2018095A1 Self-heterodyne optical signal transmission method and switching matrix transmission system using said method |
| 11/28/1990 | EP0399753A2 Neural networks |
| 11/28/1990 | EP0399571A2 Optical communication system |
| 11/28/1990 | EP0398991A1 Optical systems and methods |
| 11/27/1990 | US4973953 Data transmission system with improved fault |