Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
08/1992
08/05/1992EP0497005A2 Access method for optical local area network systems
08/04/1992US5136411 Dynamically responsive CATV system with shared fiber optic link
07/1992
07/30/1992CA2060114A1 Optoelectronic time division multiplexer and optoelectric time division demultiplexer
07/29/1992EP0496676A1 Method and device for positioning frequencies, especially optical ones
07/29/1992EP0496675A1 Procedure and communication network on optical fibres with frequency division multiplex
07/29/1992EP0496674A1 Procedure and communication network with frequency assignment
07/29/1992EP0496673A1 Procedure and message transmission network in frequency channels
07/29/1992EP0496298A2 Quadrature optical phase modulators for lightwave systems
07/28/1992US5134509 Coherent subcarrier multiplexed optical communication system
07/25/1992CA2060097A1 Process and device for the relative positioning of a frequency, particularly a light wave frequency
07/25/1992CA2059970A1 Process and network for transmitting messages over frequency channels
07/25/1992CA2059907A1 Frequency allocation communication process and network
07/24/1992CA2059835A1 Quadrature optical phase modulators for lightwave systems
07/22/1992EP0314724B1 Control of optical systems
07/09/1992WO1992011709A1 Optical communication monitoring and control
07/08/1992EP0493817A2 Optical modulator for cancellation of second-order intermodulation products in lightwave systems
07/08/1992EP0493816A2 Single sideband optical modulator for lightwave systems
07/07/1992US5128955 Method for the operation of a light amplifier having arcuately or, respectively, annularly guided radiation, particularly a ring laser diode
07/07/1992US5128790 Optical cable television transmission system
07/07/1992CA1304783C Apparatus for bidirectional transmission of optical signals
07/01/1992CA2058638A1 Single sideband optical modulator for lightwave systems
07/01/1992CA2058580A1 Optical modulator for cancellation of second-order intermodulation products in lightwave systems
06/1992
06/24/1992EP0491495A1 Optical packet field coding
06/17/1992EP0490439A1 Transmission system for the polarisation-insensitive transmission of signals
06/12/1992WO1992010887A1 Optical communications system
06/11/1992DE4038914A1 Analogue optical transmission system for television signal - divides electrical spectrum into several channels, converts to optical signals using respective transmitters and recombines using optical coupler
06/10/1992EP0489525A2 Improvements relating to optical sensing systems
06/10/1992EP0489444A2 Method for transmission and receipt of coherent light signals
06/09/1992US5121381 Optical switching apparatus for digital signal cross connection and method of interswitch optical transmission of digital signals
06/09/1992US5121240 Optical packet time compression and expansion
06/07/1992CA2056643A1 Optical sensing systems
06/03/1992EP0488241A2 Optical frequency division multiplexing network
06/02/1992US5119454 Bulk optic wavelength division multiplexer
05/1992
05/27/1992EP0487392A1 Optical bidirectional multiplexing system and corresponding method
05/27/1992EP0486931A2 Distance-measuring method and transmitting and receiving station for carrying out the same
05/27/1992EP0486874A2 Multiplex digital communication system for transmitting channel identification information
05/20/1992EP0485812A2 Device for the optical heterodyne reception of signals
05/19/1992US5115331 High speed serial optical crossbar switch
05/19/1992CA1301252C Optical communications network
05/12/1992US5113459 Optical fiber telecommunication line with separate, optically transmitted service channels
05/12/1992US5113458 Optical multiplexing
05/12/1992US5113278 Communication system and apparatus using chip signals
05/06/1992EP0483229A1 Data transmission on optical networks.
05/05/1992USH1059 Fiber optic RF signal channelizer
05/05/1992US5111519 Method of interference reduction for frequency multiplexed optical fiber communication
05/05/1992US5111322 Polarization multiplexing device with solitons and method using same
04/1992
04/30/1992WO1992007430A1 Quasi-soliton communication system
04/29/1992EP0482943A2 Bidirectional optical transmission method and apparatus therefor
04/27/1992CA2054245A1 Bidirectional optical transmission method and apparatus therefor
04/21/1992US5107360 Optical transmission of RF subcarriers in adjacent signal bands
04/19/1992WO1992007432A1 Passive optical network
04/19/1992WO1992007431A1 Passive optical network
04/15/1992CN1016306B Technique for reducing distortion characteristics in fiber-optic links
04/14/1992US5105293 Differential optical signal transmission using a single optical fiber
04/14/1992US5105292 Asynchronous optical communication system
04/07/1992US5103333 Photonic time-slot interchangers using cascade-structured integrated optical switches
04/01/1992EP0478391A2 Optical wavelength filter device
04/01/1992EP0477699A2 Optical communication system
03/1992
03/31/1992US5101450 Quadrature optical phase modulators for lightwave systems
03/31/1992US5101291 Optical frequency conversion device
03/31/1992US5101290 High-performance packet-switched wdm ring networks with tunable lasers
03/25/1992EP0476566A2 Optical communication systems and optical nodes for use therein
03/24/1992US5099114 Optical wavelength demultiplexer
03/19/1992WO1992004791A1 Optical packet time compression and expansion
03/18/1992EP0475331A2 Light transmission system with subcarriers
03/18/1992EP0475016A2 Wavelength-multiplexed optical network system
03/10/1992US5095381 Passive tap network
03/04/1992EP0472752A1 Remote control apparatus with spread spectrum transmission link
02/1992
02/26/1992EP0472383A2 Apparatus and method for demodulating multiplexed signals
02/26/1992EP0472296A1 High-performance packet-switched wdm ring networks with tunable lasers
02/23/1992CA2049539A1 Demodulating multiplexed signals
02/11/1992US5087982 Pulsed communication system
02/05/1992EP0469382A2 Transmission apparatus for transmitting messages and additional signals
02/04/1992US5086470 Scrambling in digital communications network using a scrambled synchronization signal
02/04/1992US5086349 Optical switching system which employs reference beams with different wavelengths
02/04/1992CA1295431C Optic system useful with metal service lines
01/1992
01/23/1992WO1991020113A3 Fiber optics system
01/22/1992EP0467764A1 Optical switching system for frequency multiplexed signals
01/22/1992EP0467396A2 Wavelength-multiplexed optical communication system and optical amplifier used therefor
01/07/1992CA1294071C Spread spectrum optical communication system with heterodyne detection
01/02/1992EP0463634A2 Wavelength-time-space division switching system
12/1991
12/31/1991US5077728 Frequency division multiple access network
12/31/1991US5077727 Broadband information communications network system with coherent optical data transmission lines
12/31/1991US5077698 Method and device for the high-rate transmission of data following a quasi-asynchronous mode
12/31/1991CA1293827C Optical communication system with a stabilized "comb" of frequencies
12/26/1991WO1991020113A2 Fiber optics system
12/18/1991EP0461937A2 CATV signal distribution system using optical fibres
12/18/1991EP0461583A1 Optical transmission system and method
12/17/1991US5073980 Photonic switch employing shared data transmission facility
12/16/1991CA2044667A1 Catv signal distribution system using optical fibers
12/11/1991EP0460398A1 Passive optical telecommunication system
12/04/1991EP0459119A2 Optical device
11/1991
11/28/1991DE4016359A1 Passive optical communications system for telecommunications network
11/27/1991EP0458252A1 Long range bidirectional optical fiber communication link
11/27/1991EP0458251A2 Single wavelength bidirectional optical fiber communication link
11/26/1991US5068847 Fiber optic network architecture having data feedback for monitoring communications thereon
11/22/1991CA2040755A1 Single wavelength bidirectional optical fiber communication link
11/19/1991CA2042846A1 Method of receiving wavelength multiplex signals
11/12/1991US5064263 Multiplexing apparatus for the direct optical reception of a plurality of optical wavelengths
11/06/1991EP0455108A2 Coherent transmission method, crossconnect apparatus and switching apparatus