Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
05/1994
05/20/1994CA2103172A1 Multiple access telecommunication network
05/17/1994US5313323 Fiber optic bus and tag adapter for block multiplexer channel
05/17/1994CA2103112A1 Communication method and communication system
05/10/1994US5311347 Optical communication system with automatic gain control
05/10/1994US5311344 Bidirectional lightwave transmission system
04/1994
04/28/1994WO1994009403A1 Application of optical system to phase conjugate optics
04/28/1994CA2372939A1 Bragg grating made in optical waveguide
04/27/1994EP0594344A1 Cascaded distortion compensation for analog optical systems
04/26/1994US5307428 Optical domain digital pulse switching
04/26/1994US5307191 Communications method and network with frequency allocation
04/26/1994CA2034233C Optical cable television transmission system
04/20/1994EP0593208A1 Optical communication system
04/20/1994EP0593206A1 Optical nyquist rate multiplexer and demultiplexer
04/19/1994US5305134 Optical frequency division multiplexing transmitter and optical frequency division multiplexing transmission apparatus
04/13/1994EP0591961A1 Fiber optic communication terminal, fiber optic communication system, and its wavelength setting method
04/13/1994EP0591866A2 Optical receiver and optical transmission system using the receiver
04/13/1994EP0591864A2 Optical semiconductor apparatus and optical communication system using the apparatus
04/12/1994US5303229 Optical network unit
04/07/1994DE4233581A1 Multiplex frame structure for optical digital communication system - includes frame overhead able to determine position and size of traffic bursts with predetermined number of data channels
04/05/1994US5301058 Single sideband optical modulator for lightwave systems
04/05/1994US5301056 Optical distribution system
04/05/1994US5301053 Method for transmission and receipt of coherent light signals
04/05/1994US5301052 Communication method and network using optical fibers with frequency multiplexing
03/1994
03/29/1994US5299212 Article comprising a wavelength-stabilized semiconductor laser
03/29/1994US5299047 Ternary data communication using multiple polarizations
03/29/1994US5299044 Ranging method for use in TDMA systems on tree-and-branch optical networks
03/29/1994CA1328130C Scrambling in digital communications network
03/23/1994EP0588039A1 Improvements in or relating to rotatable joints for communication lines
03/17/1994WO1994006226A1 Flexible network concept
03/15/1994CA2032089C Optimized wavelength-division-multiplexed lightwave communication system
03/08/1994US5293264 Transmission system for the polarization-insensitive transmission of signals
03/02/1994EP0585087A1 Ranging method for use in TDMA systems on tree-and-branch optical networks
03/01/1994CA1327413C Optical communications network
02/1994
02/25/1994CA2104650A1 Ranging method for use in tdma systems on tree-and-branch optical networks
02/22/1994US5289302 Access method for optical local area network systems
02/22/1994US5289299 Holographic code division multiple access
02/17/1994DE4226838A1 Optical broadband information transmission system for communications - transmits range of TV signals via multiplexing central station over optical line to subscriber units
02/09/1994EP0582061A1 Coherent optical multichannel system
02/08/1994CA2011048C Optical drop-and-insert apparatus
02/01/1994US5283686 Optical systems with grating reflector
01/1994
01/26/1994EP0579620A1 A terminal for a frequency divided, optical communication system
01/18/1994US5280376 Light transmission system
01/11/1994US5278690 Apparatus and method for synchronizing a plurality of remote transmission and receiving stations and providing automatic gain control of the synchronizing signal
01/11/1994US5278689 Gigabit per-second optical packet switching with electronic control
01/11/1994US5278687 Multiwavelength data communication fiber link
01/05/1994EP0577036A1 A tunable-filter control method, tunable-filter control apparatus and optical communication system using the same
01/04/1994US5276543 Optical signal equalizer for wavelength division multiplexed optical fiber systems
12/1993
12/21/1993US5272556 Optical networks
12/21/1993US5272555 Bidirectional optical transmission method and apparatus therefor
12/15/1993EP0573913A1 Wavelength-tuning and clock-synchronous system in an optical communication network and wavelength division multiplexing optical communication network using the system
12/15/1993EP0573752A1 Optical parallel-to-serial converter and serial-to-parallel converter
12/14/1993CA1325295C Bulk optic wavelength division multiplexer
12/08/1993EP0573337A1 Carrier frequency allocation procedure for the simultaneous transmission of a plurality of modulated signals, in particular over an optical link
12/08/1993EP0572890A1 Optical demultiplexing system
12/08/1993EP0572457A1 Optical communications system and method for transmitting information through a single optical waveguide
12/02/1993DE4217821A1 Multistage optical coupling network with frequency-dependent stage - is based on switch matrix which forwards multifrequency signal combinations for demultiplexing to several more receivers
11/1993
11/30/1993US5267074 Coherent optical heterodyne transmission system
11/24/1993EP0571132A1 Optical tunable receiver
11/23/1993CA1324690C Optical fiber bus controller
11/09/1993CA1324204C Communication system
11/04/1993DE4214375A1 Optical subscriber network with multiplexer and demultiplexer - arranges optical carriers in groups according to frequency range and uses different carriers for incoming and outgoing channels
11/03/1993EP0568447A1 Drop insertion multiplexer
11/03/1993EP0568402A1 Telecommunications network
10/1993
10/28/1993WO1993021706A1 Optical processing system
10/20/1993EP0566389A1 Optical amplification repeating transmission system
10/20/1993EP0565739A1 Procedure for the allocation of timeslots in a passive optical network
10/19/1993CA1323455C Wavelength division multiplexing using a tunable acousto-optic filter
10/12/1993US5253250 Routing and switching of high-speed optical data with the header transmitted on a subcarrier frequency
10/12/1993US5253094 Optical interconnection network
10/06/1993EP0564167A2 Multiple polarization sensitive detection arrangement for fiber optic communications
10/06/1993EP0564165A1 Ternary data communication using multiple polarizations
10/05/1993CA2015211C Optical wavelength demultiplexer
09/1993
09/30/1993WO1993019540A1 Process for allotting transmission time slots in a passive optical network
09/29/1993EP0561918A1 Optical communications system
09/27/1993CA2132854A1 Process for allotting transmission time slots in a passive optical network
09/22/1993EP0553193A4 Quasi-soliton communication system
09/15/1993EP0559659A1 Passive optical network
09/14/1993US5245681 Rapidly reconfigurable wavelength multiplexing device
09/14/1993US5245459 Optical communications systems
09/14/1993US5245404 Raman sensor
09/08/1993EP0533843A4 Fiber optics system
08/1993
08/24/1993US5239401 Optical modulator for cancellation of second-order intermodulation products in lightwave systems
08/24/1993US5239399 Electrical-optical interface device
08/04/1993EP0553193A1 Quasi-soliton communication system
07/1993
07/27/1993US5231529 Light amplifier for multi-wavelength signals
07/20/1993CA1320532C Monitoring and controlling radiation source stability
07/13/1993US5228105 Programmable electro-optic packaging and interconnect system
07/13/1993US5227624 Optical sensing systems with plural wavelengths and wavelength sensitive sensors
07/08/1993WO1993013617A1 Passive optical network structure with high fault tolerance
07/08/1993WO1993013612A1 A robust optical signal transmission system
07/08/1993CA2126323A1 Apparatus and method for controlling an extinction ratio of a laser diode over temperature
07/07/1993EP0550046A2 Routing and switching of optical packets with multiplexed data and header
07/06/1993US5225922 Optical transmission system equalizer
07/01/1993CA2085395A1 Routing and switching of high-speed data with the header transmitted on a subcarrier frequency
06/1993
06/29/1993US5224183 Multiple wavelength division multiplexing signal compensation system and method using same
06/24/1993WO1993012596A1 Optical distribution system
06/24/1993WO1993012591A1 Optical communications system and method for transmitting information through a single optical waveguide
06/22/1993US5222105 Opto-electronic interface for decoding wave division multiplexed manchester gray coded binary signals
06/22/1993US5222103 Differential quadrature phase shift keying encoder for subcarrier systems
06/22/1993US5221983 Passive photonic loop architecture employing wavelength multiplexing