Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
03/1999
03/24/1999EP0903882A2 Stable wavelenght division multiplex ring network
03/24/1999EP0903877A2 Optical fiber dispersion compensation
03/24/1999EP0903874A2 Distortion penalty measurement procedure in optical systems using noise loading
03/24/1999EP0799432A4 Integrable fiberoptic coupler and resulting devices and systems
03/23/1999US5887093 Optical fiber dispersion compensation
03/23/1999US5886803 Bilateral optical transmission system and optical transceiver for pulse information
03/23/1999US5886802 Wavelength control method and optical communication apparatus for performing wavelength division multiplex communication
03/23/1999CA2164778C Ring network communication structure on an optical carrier and reconfigurable node for said structure
03/23/1999CA2160823C A wavelength division multiplexing passive optical network with bi-dir ectional optical spectral slicing
03/18/1999WO1999013607A1 Dense wdm optical multiplexer and demultiplexer
03/18/1999WO1999013606A1 Hitless reconfiguration of a wavelength division multiplexed optical communication network
03/18/1999CA2270053A1 Dense wdm optical multiplexer and demultiplexer
03/17/1999EP0902567A2 Optical amplifying apparatus and method for amplifying a light signal
03/17/1999EP0902566A2 Method for changing a number of channels in an optical communication network
03/17/1999EP0902565A2 Optical communication system with optical amplification
03/17/1999EP0901723A2 Method for structuring of digital data which can be transferred in both directions on a passive optical network (pon) in a pon tdma system
03/11/1999WO1999012297A1 Arrangement and method relating to optical transmission
03/11/1999WO1999012296A1 Modular cascaded mach-zehnder dwdm components
03/11/1999WO1999012287A1 Optical transmission system with coherent optical time domain reflectometry
03/11/1999WO1999012268A2 Method and system for modular multiplexing and amplification in a multi-channel plan
03/11/1999WO1998054861A3 Optical multiplexing and demultiplexing
03/11/1999CA2302478A1 Arrangement and method relating to optical transmission
03/10/1999EP0901025A2 Optical passband filters
03/10/1999EP0900489A1 Optical synchronisation arrangement
03/09/1999US5881079 Wavelength selectable laser with inherent and single-mode stability
03/09/1999US5880874 Optical equalizer and optical amplifier and wavelength multiple optical transmission apparatus using optical equalizer
03/09/1999US5880866 Time division demultiplexing using selective Raman amplification
03/09/1999US5880865 Wavelength-division-multiplexed network having broadcast capability
03/09/1999US5880864 Advanced optical fiber communications network
03/09/1999CA2163059C Tunable add/drop optical filter providing arbitrary channel arrangements
03/03/1999EP0899976A2 Dynamic reconfiguration of a wireless network using flexible wavelength multiplexing
03/02/1999US5877879 Wavelength division multiplexing optical transmission system and optical transmitting device used in the transmission system
03/02/1999US5877878 Surveillance method of optical amplifier-repeater transmission system
02/1999
02/28/1999CA2244475A1 Expandable wavelength-selective and loss-less optical add/drop system
02/24/1999EP0898391A2 Minimizing dispersion in optical-fiber transmission lines
02/24/1999EP0898387A2 Optical power measuring system, terminal station and repeater therefor
02/24/1999EP0897624A1 Method and device for on-line regeneration of a signal transmitted by wavelength division multiplexed solitons and optical telecommunication system comprising such a regenerating device
02/24/1999EP0897554A1 Optical clock division
02/24/1999EP0858695A4 Apparatus and method for digital data transmission
02/24/1999CN1209006A Method and apparatus for minimizing intensity of specific frequency component of optical signal travelling through optical fiber transmission line to thereby minimize total dispersion
02/23/1999US5875046 Optical repeater and optical transmitter
02/23/1999US5875045 Wavelength-multiplexing optical communication method employing RZ signals, wavelength-multiplexing optical sending apparatus employing RZ signals, and wavelength-multiplexing optical communication system employing RZ signals
02/18/1999WO1999008143A1 Optical wavelength division multiplexer
02/18/1999WO1998052314A3 An add and drop node for optical communication systems
02/18/1999DE19731494A1 Verfahren und Anordnung zur Datenübertragung im Wellenlängenmultiplexverfahren in einem optischen Ringnetz Method and apparatus for data transmission in the wavelength division multiplexing in an optical ring network
02/18/1999CA2299359A1 Optical wavelength division multiplexer
02/17/1999CN1208523A Dispersion slope compensation in optical transmission systems
02/16/1999US5872650 Optical amplifiers
02/16/1999US5872645 Telecommunications network
02/16/1999CA2129779C Device for extraction and re-insertion of an optical carrier in optical communication networks
02/16/1999CA2119503C Wavelength division multiplexed optical communication transmitters
02/11/1999WO1999007097A1 Dynamically reconfigurable optical add-drop multiplexers for wdm optical communication systems
02/11/1999WO1999007096A1 Multi-band amplification system for dense wavelength division multiplexing
02/11/1999WO1999007087A2 Communication using spread spectrum methods over optical fibers
02/11/1999WO1998047254A3 N x m optical wavelength routing switch
02/11/1999WO1998045974A3 Access network for transmitting optical signals
02/11/1999CA2299441A1 Multi-band amplification system for dense wavelength division multiplexing
02/11/1999CA2298599A1 Communication using spread spectrum methods over optical fibers
02/10/1999EP0896448A2 Optical node system for a ring architecture and method thereof
02/10/1999EP0896447A2 WDM transmitter for optical networks using a loop-back spectrally sliced light emitting device
02/10/1999CN1207632A Method to provide information concerning frequency band, head-end and terminal realizing such method
02/10/1999CN1207618A Optical transmission system and transmitting terminal station
02/10/1999CN1207617A System of controlling wavelength division multiplexed optical amplifier and method thereof
02/09/1999US5870512 Optical transmitter
02/09/1999US5870217 Multi-wavelength optical batch amplification apparatus
02/09/1999US5870213 Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
02/09/1999CA2139957C Multi-channel optical fiber communication system
02/04/1999WO1999005812A1 Optical data processing using electroabsorbtion modulators
02/04/1999WO1999005811A1 Method and device for transmitting data by wavelength division multiplexing in an optical ring network
02/04/1999WO1998052306A3 Optical add/drop device
02/04/1999WO1998049794A3 Low loss, optical add/drop wdm node
02/04/1999CA2295825A1 Optical data processing using electroabsorbtion modulators
02/03/1999CN1206974A Method for determing swtiching on frequency band and first and last end of realized said method
02/02/1999US5867484 Switchable multi-drop video distribution system
02/02/1999US5867291 Programmable wavelength router
02/02/1999US5867290 High capacity spread spectrum optical communications system
02/02/1999US5867289 Fault detection for all-optical add-drop multiplexer
02/02/1999CA2172204C Optical add-drop multiplexer for optical communication networks
02/02/1999CA2168579C Optical fibre communications system
02/02/1999CA2123145C High capacity optical fiber network
02/02/1999CA2048597C Optical interconnection network
01/1999
01/28/1999WO1999004526A1 Method for transmitting overhead information for wavelength division multiplex networks for fibre-optic information transmission
01/28/1999WO1998044641A3 Optical bit rate converter
01/27/1999EP0893016A1 Add/drop multiplexer
01/27/1999CN1206269A MxO multiplex demultiplex component
01/27/1999CN1206262A Method of assigning time slots, as well as system, center, and subscriber facility for carrying out this method
01/27/1999CN1206122A Pump wavelength tuning of optical amplifiers and use of same in wavelength division multiplexed systems
01/26/1999US5864672 Communication network
01/26/1999US5864423 Optical amplifier, method of controlling the output light from the optical amplifier, optical transmission system and method of controlling an optical transmission path
01/26/1999US5864415 Fiber optic network with wavelength-division-multiplexed transmission to customer premises
01/26/1999US5864414 WDM network with control wavelength
01/26/1999US5864413 Passive optical network for dense WDM downstream data transmission and upstream data transmission
01/26/1999CA2154017C Tunable add/drop optical filtering method and apparatus
01/26/1999CA2149263C Network apparatus and method for providing two-way broadband communications
01/21/1999WO1999003231A1 A method and a system for interconnecting ring networks
01/21/1999WO1999003230A1 Self-healing ring network and a method for fault detection and rectifying
01/21/1999WO1998046038A3 Method for transmitting additional data signals and a useful data signal by means of optical links
01/21/1999DE19740743C1 Optical amplifier with gain control
01/20/1999EP0892580A2 Method of assigning timeslots and system, exchange and subscriber equipment for carrying out the method
01/20/1999EP0892524A2 Communication apparatus, network system using communication apparatus and control method used in network system