Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
02/1995
02/09/1995DE4326522A1 Programmable optical filter and optical circuit arrangement
02/08/1995EP0637880A1 Optical successive modulation-multiplexing for fiber optical network
02/07/1995US5388088 Multiple polarization sensitive detection arrangement for fiber optic communications
02/07/1995US5387992 Optical frequency multiplex carrier control system
02/07/1995US5387927 Method and apparatus for broadband transmission from a central office to a number of subscribers
02/01/1995EP0637148A1 Wavelength division multiplex optical transmission system using optical amplification
02/01/1995EP0636908A1 Wavelength division multiplexed optical communication transmitters
01/1995
01/25/1995EP0635739A1 Improved fiber loop mirror for time division demultiplexing
01/25/1995EP0635180A1 Optical processing system
01/24/1995CA1334114C Apparatus and method for converting a frequency division multiplex to a time division multiplex
01/11/1995EP0633698A2 Cable television distribution network with video signal transmission on demand
01/11/1995EP0632942A1 Process for allotting transmission time slots in a passive optical network.
01/05/1995WO1995001022A1 Arrangement for defining a transmission delay in a subscriber network
01/05/1995WO1995001019A1 Subscriber network arrangement for accession of subscribers to a telephone network
01/03/1995US5379309 Signal generator
01/03/1995US5379142 Demultiplexing apparatus and optical communication system using the demultiplexing apparatus
01/03/1995US5379141 Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links
12/1994
12/28/1994EP0631405A1 WDM TDM ring network
12/27/1994US5377035 Wavelength division multiplexed fiber optic link for RF polarization diversity receiver
12/21/1994EP0474692B1 Optical communications systems
12/20/1994US5375007 Optical distribution system
12/14/1994EP0629058A1 Optical wavelength selection control system in optical networks
12/08/1994DE4402831A1 Zweiweg-Übertragungssystem unter Verwendung eines einzigen optischen Pfades Two-way communication system using a single optical path
12/07/1994EP0572457A4 Optical communications system and method for transmitting information through a single optical waveguide.
12/06/1994US5371622 Coherent optical telecommunication network wherein each send/receive terminal can simultaneously communicate with more than one other send/receive terminal
12/06/1994CA2057311C Transmission system for the polarisation-insensitive transmission of signals
11/1994
11/30/1994EP0626768A1 High capacity optical fiber network
11/29/1994US5369516 Optical communication network system and communication method using the same
11/29/1994US5369515 Node for loop-type optical LAN and a loop-type optical LAN using the same
11/23/1994EP0625719A1 Polarisation insensitive wavelength multiplexing 2X2 fibre couplers
11/22/1994US5367396 Optical frequency marking method and different frequency channel communication network using it
11/15/1994US5365361 Coherent optical multi-channel arrangement
11/15/1994US5365359 Method for electrically passive self-routing optical multiplexing
11/15/1994US5365344 System for transmitting data using wavelength division multiplexing
11/08/1994US5363221 For a communication system
11/02/1994CN1094552A An optical communications system for transmitting information signals having different wavelengths over a same optical fiber
11/01/1994US5361262 Estimated-queue, expanded-bus communication network
11/01/1994US5361154 Method and apparatus for performing wavelength-tuning and clock-synchronization in a wavelength division multiplexing optical communication network
10/1994
10/27/1994WO1994024779A1 Method and apparatus for receiving monitoring signal
10/26/1994EP0621700A2 Wavelength multiplexing network
10/19/1994EP0620694A2 Optical cross-connect system with space and wavelength division switching stages
10/18/1994US5357359 All-optical polarization independent optical time division multiplexer and demultiplexer with birefringence compensation
10/12/1994EP0619658A2 Apparatus for extracting an optical clock and apparatus for demultiplexing a time-division multiplexed signal
10/06/1994DE4405461C1 Calibration of TDMA systems including a passive optical network
10/05/1994EP0618692A1 Passive optical telecommunicationssystem
10/05/1994EP0617868A1 Passive optical network structure with high fault tolerance.
10/05/1994EP0617852A1 Apparatus and method for controlling an extinction ratio of a laser diode over temperature
10/05/1994EP0473667B1 Optical networks
10/04/1994US5353145 Optical distributor
10/04/1994US5353114 Opto-electronic interferometic logic
10/01/1994CA2120116A1 Passive optical telecommunication system
09/1994
09/28/1994EP0617527A1 Transmission systems incorporating optical amplifiers
09/28/1994EP0617526A1 Coherent optical transceiver with frequency stabilisation
09/27/1994US5351148 Optical transmission system
09/27/1994US5351147 Pulse frequency division multiplexing
09/27/1994US5351146 All-optical network architecture
09/14/1994EP0615358A1 Optical network based on remote interrogation of terminal equipment
09/14/1994EP0615321A2 Article comprising a wavelength-stabilized semiconductor laser
09/07/1994EP0614291A1 All-optical network architecture
08/1994
08/31/1994EP0613263A1 Optical network comprising a compact wavelength-dividing component
08/30/1994US5343314 Optical fiber communication method and multimedia optical fiber network using the same
08/30/1994CA1331800C Time and wavelength division switching system
08/24/1994EP0612164A1 Rapidly tunable windeband integrated optical filter
08/23/1994US5341365 Passive optical network
08/23/1994CA2045797C Wavelength-time-space division switching system
08/16/1994US5339187 Wide dynamic range high frequency signal transmission utilizing a logarithmic amplifier
08/16/1994US5339186 Optical data packet compressor/decompressor
08/16/1994US5339183 Optical signal transmission device
08/10/1994CN1025646C Optical fibre telecommunications line with separate service channels
08/09/1994US5337175 Optical communications system for the subscriber area with optical amplifiers
08/02/1994US5335104 Method of detecting breaks in multi-drop feeder systems
07/1994
07/20/1994EP0607029A2 Wavelength division multiplex bidirectional optical communication system
07/19/1994US5331451 Optical time-division multiplexing
07/13/1994EP0606170A2 Optical transmission system and optical network terminals used therein
07/12/1994US5329393 Optical Nyquist rate multiplexer and demultiplexer
07/06/1994EP0604894A1 Demultiplexing apparatus and optical communication system using the demultiplexing apparatus
07/05/1994US5327423 Method and a network for transmitting messages in frequency channels
07/05/1994US5327276 Optical local area network system and node apparatus used in the same
06/1994
06/29/1994EP0604040A1 Optical signal identification technique
06/28/1994US5325221 Wavelength division multiplexer and demultiplexer
06/22/1994CA2104189A1 Optical signal identification technique
06/21/1994US5323256 Apparatus for controlling remote servoactuators using fiber optics
06/21/1994US5323255 Transceiver arrangement using TDM to transmit assigned subcarrier waveforms
06/14/1994US5321849 System for controlling signal level at both ends of a transmission link based on a detected valve
06/14/1994US5321540 Optical frequency division multiplexing network
06/14/1994CA1330242C Subcarrier-multiplexed optical transmission systems using optical channel selection
06/09/1994WO1994013076A1 An optical communications system for transmitting information signals having different wavelengths over a same optical fiber
06/07/1994US5319489 Method and apparatus for relative positioning of a frequency, in particular an optical frequency
06/07/1994US5319485 Wavelength-assignable optical communication system
06/07/1994US5319484 Photonic time-division multiplexer and demultiplexer
06/01/1994EP0599552A1 Electro-optical method and apparatus
06/01/1994EP0599177A1 Communication method and system with token passing address
06/01/1994EP0598929A1 Optical communication system suitable for selective reception of multiple services
06/01/1994EP0216839B1 Optical signal processing
05/1994
05/31/1994US5317440 Single wavelength bidirectional optical fiber communication link
05/31/1994US5317384 Polarisation state insensitive optical discriminator
05/25/1994EP0598452A1 Multiple access telecommunication network
05/25/1994EP0598451A1 Multiple access telecommunication network
05/24/1994US5315436 Fiber optics system
05/24/1994US5315423 Wavelength multiplexed two dimensional image transmission through single mode optical fiber