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)
12/1988
12/13/1988US4790656 Dual homodyne detection system to measure asymmetric spectrum by using angle mirrors
12/13/1988US4790619 Transmitters; glass of germanium, silicon or arsenic oxides with a heavy metal oxide
12/13/1988US4790616 Optical separating module
12/13/1988CA1246692A1 Device for transmitting through and optical coupling data issuing from a steering wheel to an element mounted on a vehicle
12/13/1988CA1246679A1 Optical composite transceiver
12/13/1988CA1246678A1 Optical heterodyne receiver
12/13/1988CA1246677A1 Optical communication system
12/08/1988DE3716896A1 Method for optical telecommunication between satellites
12/07/1988EP0294167A1 Optical devices
12/07/1988EP0294133A2 Protocols for very high-speed optical LANs
12/06/1988US4789987 Automatic modulation control apparatus
12/06/1988US4789213 Electro-optical modulator having a monomode light waveguide modulator
12/06/1988CA1246125A1 Steering switch device
12/01/1988WO1988009518A1 Apparatus to launch separated mode groups into optical fibers
11/1988
11/30/1988EP0293086A1 Surveillance system
11/29/1988US4788458 Two wire interface circuit
11/29/1988US4787927 Fabrication of optical fibers
11/29/1988US4787693 Passive star coupler
11/29/1988US4787692 Electro optical switch architectures
11/24/1988DE3816018A1 Protective circuit for infrared receivers
11/24/1988DE3716247A1 Optical communication system with wavelength-division and polarization-division multiplex
11/24/1988DE3715294A1 Method for data transmission
11/23/1988EP0292117A1 Automatic threshold adjustment circuit for digital data communication
11/22/1988US4786797 Electro-optical data handling system with noise immunity
11/22/1988US4786129 Optical coupling assembly
11/22/1988CA1245329A1 Apparatus for the controlled transmission of light
11/22/1988CA1245292A1 Spread spectrum code-division-multiple-access (ss- cdma) lightwave communication system
11/22/1988CA1245291A1 High-reliability fiber optic repeater
11/22/1988CA1245290A1 Power transmission through a long wavelength optical fibre
11/17/1988WO1988009093A1 Control of optical systems
11/17/1988EP0291344A2 Wireless data coupling system
11/09/1988EP0290297A2 Rejection filter for optical signals and its application in ring interferometers
11/09/1988EP0290243A2 Optically powered sensor system
11/09/1988EP0290191A2 Method for the operation of a distributed feedback laser
11/08/1988US4783852 Method and apparatus for acquiring information using a relative phase deviation of the optical signal of a local oscillator of a homodyne receiver
11/08/1988US4783851 Optical communication system
11/08/1988US4783137 Fiber optic coupling system
11/08/1988CA1244519A1 Optical networks
11/03/1988WO1988008651A1 Surveillance system
11/03/1988WO1988008573A1 Radiation-coupled daisy chain
11/02/1988EP0289379A2 Sensor of a physical parameter
11/02/1988EP0289306A2 Optical communications apparatus
11/01/1988US4781428 Devices and methods for selectively tapping optical energy from an optical fibre
11/01/1988US4781427 Active star centered fiber optic local area network
11/01/1988CA1243857A1 Light detector having a photodiode with bias control
10/1988
10/26/1988EP0288418A2 Optical information transmission method with heterodyne reception
10/26/1988EP0287878A1 Dual media local area network interfacing
10/24/1988EP0236432A4 Optical fiber bandwidth limiting method.
10/20/1988WO1988008232A1 Transmission system
10/20/1988WO1988008231A1 Transmitter and transceiver for a coherent optical system
10/20/1988WO1988008205A1 Monolithic integrated waveguide-photodiode-fet combination
10/19/1988EP0287415A1 Optic fibre transmission device, particularly for underwater environment
10/19/1988EP0287379A1 Transmission system
10/19/1988EP0287378A1 Transmitter and transceiver for a coherent optical system
10/19/1988EP0287124A2 Method of coated fiber identification in optical transmission network
10/19/1988EP0287032A2 Optical alignment system
10/18/1988US4779281 Light emitting chip and optical communication apparatus using the same
10/18/1988US4779265 Multiple access communication system
10/18/1988US4778238 Optical communications systems and process for signal amplification using stimulated brillouin scattering (SBS) and laser utilized in the system
10/12/1988EP0286350A2 Optical fiber communication system
10/11/1988US4777664 For a local optical fibre network
10/11/1988US4777663 Data rate limiter for optical transmission system
10/11/1988US4777662 Optical communication process
10/11/1988US4777661 Apparatus and method for self-referencing and multiplexing intensity modulating fiber optic sensors
10/11/1988US4777660 Retroreflective optical communication system
10/11/1988US4776660 Light diplexer of a communication system comprising three light connections
10/11/1988CA1243078A1 Coupling device for single mode optical fiber and communications system comprising same
10/11/1988CA1242908A1 Optical coupling device
10/06/1988WO1988007313A3 Improvements in electro optical switch architectures
10/05/1988EP0285523A1 Optical-fibre delay line for coherent signal processing, and its uses in filtering, correlation, and spectral analysis
10/05/1988EP0284910A1 Integrated-optical device for bi-directional optical communications- or signal- transmission
10/04/1988US4776041 Collision detection in a fiber optic local area network
10/04/1988US4776000 Telephone communications system with portable handsets
10/04/1988US4775972 Optical fiber communication for local area networks with frequency-division-multiplexing
10/04/1988US4775971 Optical communication system
10/04/1988US4775210 Voice and data distribution system with fiber optic multinode star network
09/1988
09/27/1988US4774717 For generating a rectangular waveform signal
09/27/1988US4773722 Two-way coupler for optical fibers
09/22/1988WO1988007313A2 Improvements in electro optical switch architectures
09/22/1988WO1988007216A1 Apparatus for optical wavelength division multiplexing
09/22/1988DE3709142A1 Arrangement for transmitting laser light
09/21/1988EP0282878A2 Arrangement of optical-integrated spectrometer and method for the making the same
09/21/1988EP0282801A1 Controlling the multiplication factor of avalanche photodiodes in optical receivers
09/21/1988EP0282558A1 Bistable optical device
09/21/1988CN88101159A Technique for repelling carriers in optical communication to minimize mutual interference
09/20/1988US4773063 Optical wavelength division multiplexing/demultiplexing system
09/20/1988US4772859 Microwave temperature compensated cascadable amplifier for fiber optical receiver
09/20/1988US4772854 All optical repeater
09/20/1988CA1242252A1 Data transmission system
09/20/1988CA1242249A1 Optical fibre networks
09/14/1988EP0282399A1 Base station receiving system for optically transmitted data issued from n mobile stations
09/14/1988EP0282228A1 Improvements relating to pipeline sort matrices
09/14/1988EP0282227A1 Signal switching processor
09/14/1988EP0282071A2 Optical switching system
09/13/1988US4771398 Method and apparatus for optical RF phase equalization
09/13/1988US4771397 Method and apparatus for optical RF amplitude equalization
09/13/1988US4771219 Light emitting diode control circuit
09/13/1988US4770485 Apparatus to launch separated mode groups into optical fibers
09/13/1988CA1241995A1 Optical transmission network
09/13/1988CA1241994A1 Optical transmission