Patents
Sitemap › H04 - Electric communication technique › H04J - Multiplex communication › H04J 14 - Optical multiplex systems
Patents for H04J 14 - Optical multiplex systems (27,009)
12/1990
12/04/1990US4975926 Wireless indoor data communication system
12/04/1990US4975899 Optical broadcast network
11/1990
11/28/1990EP0399861A1 Reading arrangement for polarimetric and interferometric sensors
11/27/1990CA1277018C High repetition rate laser source having high power
11/26/1990WO1990014734A1 Optical networks
11/26/1990WO1990014733A1 Optical communications systems
11/20/1990US4972352 Semiconductors lasers
11/13/1990CA1276078C Distributed sensor and method using coherence multiplexing of fiber-optic interferometric sensors
10/1990
10/31/1990EP0395060A2 Optical receiver
10/31/1990EP0394772A2 Television transmission system by optical cable
10/31/1990EP0394728A2 Optical communication system for the subscriber connection area
10/23/1990CA1275513C Technique for repelling carriers in optical communications to minimize mutual interference
10/03/1990EP0390002A2 Optical-communication transmission system for diplex or duplex transmission
09/1990
09/26/1990EP0389062A1 Communication system, comprising a central station and a number of decentralised stations connected to that central station via an optical transmission network
09/26/1990EP0232319A4 Optical communications systems
09/25/1990US4959826 Spread spectrum optical communication system with heterodyne detection
09/19/1990EP0387870A2 Method for controlling polarizations of signal lights in an optical frequency division multiplex coherent communication system
09/18/1990US4957340 Synchronous multifrequency optical network
09/12/1990EP0386466A2 Optical information transmission system in the subscriber region
09/11/1990US4956834 Coherence multiplexed optical signal transmission system and method
09/05/1990EP0385644A1 Clock distribution arrangement for time-multiplexed switched optical network
09/05/1990EP0385430A2 Optical drop-and-insert apparatus
09/04/1990US4955026 Frequency locking radiation beam
09/04/1990US4953954 Phase-conjugate communication using mutually incoherent laser beams
08/1990
08/31/1990CA2007828A1 Clock distribution arrangement for time-multiplexed switched optical network
08/28/1990US4953156 Wideband subcarrier multiplexed optical communication system operating over more than one octave
08/22/1990EP0383138A2 Device for the direct optical reception of a plurality of wave lengths
08/21/1990US4950044 Optical semiconductor device for demultiplexing wavelength multiplexed lights
08/21/1990CA1273065A1 Dual polarization transmission system
08/16/1990EP0382430A1 Optical interconnection network
08/16/1990EP0208729B1 Optical networks
08/09/1990WO1990009708A1 Optical interconnection network
08/08/1990EP0381102A1 Fibre-optical communication network with frequency division multiplexing
08/08/1990EP0380945A2 Optical broad-band communication transmission system, especially in the subscriber access area
08/08/1990EP0214261B1 Signal generation
08/07/1990US4947389 Multi-channel ring architecture for distributed networks
08/07/1990US4947037 Optical sensing system with light pulses
07/1990
07/31/1990US4945531 Optical wavelength-division multiplex transmission system with an optical filter for spontaneous emission noise
07/17/1990US4942568 Optical transmission device
07/10/1990US4941208 High performance subcarrier multiplexed optical communication system with modulation index exceeding unity
07/03/1990US4938556 Superfluorescent broadband fiber laser source
06/1990
06/19/1990US4935918 Optic system useful with metal service lines
06/12/1990US4933990 Optical privacy communication system in two-way optical transmission system
06/12/1990US4933930 High speed switch as for an optical communication system
06/12/1990US4933929 Wavelength multiplexed optical transmitter for generating constant-amplitude angle-modulated beams to eliminate phase noise in adjacent transmission channels
05/1990
05/23/1990EP0368925A1 Light amplifier with ring-shaped guided beam, in particular ring laser diode.
05/16/1990EP0368566A2 Synchronous multifrequency optical network
05/09/1990EP0367546A2 Microwave subcarrier generation for fiber optic systems
05/09/1990EP0367460A1 Optical fiber bus controller
05/09/1990EP0367452A2 A photonic switch architecture utilizing code and wavelength multiplexing
05/09/1990EP0366938A2 High speed switch as for an optical communication system
05/02/1990CN1007844B Process and apparatus for control and for supervision of an industrial installation by transmission of information and of commands by optical means
05/01/1990US4922481 Optical communication systems enabling minimal subscriber components
05/01/1990US4922480 Technique for improving the percentage of semiconductor lasers usable with a predetermined wavelength specification
05/01/1990CA2001511A1 Microwave subcarrier generation for fiber optic systems
04/1990
04/17/1990US4918689 Asynchronous communication system
04/11/1990EP0362790A2 Optical fiber communication method and multimedia opitcal fiber network using the same
04/03/1990US4914648 Multichannel, multihop lightwave communication system
03/1990
03/21/1990EP0359205A2 Optical communication system for simultaneous transmission of a baseband digital signal and multiple microwave subcarriers
03/20/1990US4910726 Optical fibre communication networks with local optical power feeding
03/07/1990CN1040295A Technique for reducing distortion characteristics in fiber-optic links
03/06/1990US4906064 Switch for selectively switching optical wavelengths
02/1990
02/22/1990WO1990001851A1 Transmission apparatus
02/14/1990EP0354776A2 Improvements in and relating to semiconductor lasers
02/13/1990US4901306 Wavelength-division multiplexed optical fiber network
02/07/1990EP0353835A2 Technique for reducing distortion characteristics in fiber-optic links
01/1990
01/30/1990US4897830 Optical networks
01/30/1990US4897562 Process and apparatus for efficient sum and difference frequency generation
01/09/1990US4893300 Technique for reducing distortion characteristics in fiber-optic links
01/02/1990US4890893 Dark fiber switched bandwidth filter
12/1989
12/27/1989EP0348021A2 Optical sensing systems
12/27/1989EP0347563A2 Bulk optic wavelength division multiplexer
11/1989
11/21/1989US4882775 Demodulation technique for coherence multiplexed optical data transmission system
11/09/1989DE3912502A1 Method and device for transmitting control data in a multi-station system
10/1989
10/18/1989EP0337670A2 Signal transmission system for machine tools, inspection machines, and the like
10/18/1989EP0337619A1 Communication system
10/10/1989US4873681 Hybrid optical and electronic packet switch
10/10/1989CA1262260A1 Broadband optical distribution system
10/05/1989WO1989009518A1 Communication system
09/1989
09/26/1989CA1261473A1 Signal generation
09/26/1989CA1260164A1 Multiplex transmission of analog signals by fiber optic channel
09/21/1989WO1989008239A3 Method to decode relative spectral data
09/21/1989DE3828200A1 Wavelength-selective optical receiver
09/19/1989US4868809 Optical communication system
09/19/1989US4867522 Wavelength sensitive optical devices
09/19/1989CA1259718A1 Optical local area network using a common optical carrier with separate user angle modulation
09/12/1989US4866699 Optical telecommunications system using code division multiple access
09/12/1989US4866698 Multiplexed optical communication system
09/08/1989WO1989008239A2 Method to decode relative spectral data
09/05/1989US4864310 Adaptive antenna system for radio waves, in particular for microwaves
08/1989
08/22/1989US4860279 Source modulated coherence multiplexed optical signal transmission system
08/22/1989US4859016 Fiber optic amplifier
08/22/1989CA1258692A1 Optical communication system
08/16/1989EP0327967A1 Time-multiplexed optical network
08/15/1989US4857726 Method to decode relative spectral data
08/08/1989CA1258292A1 Optical communications systems and process for signal amplification using stimulated brillouis scattering(sbs) and laser utilized in the system
08/02/1989EP0215804B1 Muldex for optical transmission systems
07/1989
07/18/1989US4850047 Optical bus communication system utilizing frame format signals
07/11/1989CA1257415A1 Optical multiplexer/demultiplexer
07/11/1989CA1257336A1 Data rate limiter for optical transmission system
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