Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
01/1999
01/20/1999EP0892516A2 All-optical time-division demultiplexing circuit and all-optical TDM-WDM conversion circuit
01/20/1999EP0892512A2 Circuit and channel assignment plan for optical transmissions
01/20/1999EP0635180B1 Optical processing system
01/20/1999CN1205817A Optical spectral multiplexer for inserting and extracting
01/20/1999CN1205588A Method to provide information concerning frequency band, head-end, network terminator and terminal realizing such method and communication access network including such head-end, such network terminal
01/19/1999US5862138 Adaptive routing in a multiple network communication system
01/19/1999US5861980 Optical spectrum analyzer and method for controlling output of optical amplifier
01/19/1999US5861975 Wavelength stability circuit
01/19/1999US5861972 Optical multiplex transmission equipment and method
01/19/1999US5861967 Wavelength multiplexed light transfer unit and wavelength multiplexed light transfer system
01/19/1999US5861966 Broad band optical fiber telecommunications network
01/19/1999US5861965 Optical communication system employing spectrally sliced optical source
01/19/1999CA2034915C Optical fiber telecommunication line with separate, optically transmitted service channels
01/17/1999CA2240766A1 Method of assigning time slots, as well as system, center, and subscriber facility for carrying out this method
01/13/1999EP0891087A1 Method to determine an access frequency band, a head-end and a first terminal realizing such a method and a communication access network including such a head-end and such a terminal
01/13/1999EP0891086A1 A method to provide information concerning a frequency band, a head-end, a network terminator and a terminal realizing such a method and a communication access network including such a head-end, such a network terminator and such a terminal
01/13/1999EP0891085A1 A method to provide information concerning a frequency band, a head-end and a terminal realizing such a method and a communication access network including such a head-end and such a terminal
01/13/1999EP0891056A2 Communication network, node apparatus and method for controlling the same
01/12/1999US5859718 Simplified switching control device, and a network system for employing the device: and a simplified switching control method, and a communication method for employing the method
01/12/1999CA2114653C Method and apparatus for broadband transmission from a central office to a number of subscribers
01/10/1999CA2240753A1 A method to provide information concerning a frequency band, a head-end and a terminal realizing such a method and a communication access network including such a head-end and such a terminal
01/10/1999CA2240748A1 Method to determine an access frequency band, a head-end and a first terminal realizing such a method and a communication access network including such a head-end and such a terminal
01/10/1999CA2240650A1 A method to provide information concerning a frequency band, a head-end, a network terminator and a terminal realizing such a method and a communication access network including such a head-end, such a network terminator and such a terminal
01/07/1999WO1999000925A1 Method and apparatus for dynamically equalizing gain in an optical network
01/07/1999WO1999000924A1 Dynamic optical amplifier
01/07/1999WO1999000922A1 Method for transmitting a signal in a network
01/07/1999WO1999000919A1 Loop status monitor for determining the amplitude of component signals of a multi-wavelength optical beam
01/07/1999DE19727547A1 Verfahren für eine Signalübertragung in einem Netz A method for signal transmission in a network
01/06/1999CN1204191A Selectable wavelength filtering
12/1998
12/30/1998WO1998059452A1 Method for transmitting a signal in an optical network
12/30/1998EP0887965A1 Method and device for concatenating binary informations and use thereof for optical transmission of packets
12/30/1998EP0887964A2 Filter selector
12/30/1998EP0887963A2 Cascaded optical multiplexing devices
12/30/1998EP0887672A1 Fibre-optic wavelength division multiplexer-demultiplexer
12/30/1998EP0886935A1 Bitstream management
12/30/1998EP0886895A1 Vcsel-based multi-wavelength transmitter and receiver modules for serial and parallel optical links
12/30/1998CA2241939A1 Optical device for processing an optical digital signal
12/29/1998US5854701 Passive optical network
12/29/1998US5854699 Multiplexed subcarrier control in wavelength division multiplexed broadband networks
12/29/1998US5854698 Repeaterless branch powered fiber optic communication system
12/29/1998CA2097679C Method of allocating carrier frequencies for the simultaneous transmission of several modulated signals, particularly over an optical link
12/26/1998CA2238606A1 Cascaded optical multiplexing devices
12/24/1998DE19726009A1 Verfahren für eine Signalübertragung in einem optischen Netz A method for signal transmission in an optical network
12/23/1998WO1998058466A1 Method for optically transmitting signalling and control information in optical wavelength multiplex networks
12/23/1998CA2239820A1 Process and device for concatenating binary information and application to optical packet transmission
12/22/1998US5852510 Amplified telecommunication system for wavelength-division multiplexing transmission having an equalized reception power
12/22/1998US5852505 For demultiplexing on optical signals into individual channels
12/19/1998CA2241041A1 An optical device and a method of processing a digital optical signal in parallel and in free space
12/17/1998DE19725714C1 Verfahren zur optischen Übertragung von Signalisierungs- und Steuerinformationen in optischen Netzen A method for optical transmission of signaling and control information in optical networks
12/16/1998EP0883942A1 Channel selection in an optical tdma network
12/16/1998EP0883938A1 Dark pulse tdma optical network
12/16/1998CN1202285A Method for independently controlling wavelength component powers in optical wavelength division multiplexed transmission system
12/16/1998CN1202057A Fault restoration control method and its apparatus in communication network
12/15/1998US5850303 Optical transmission system and optical transmission device used therefor
12/15/1998US5850301 Wavelength multiplexed light transfer unit and wavelength multiplexed light transfer system
12/09/1998EP0883259A2 CDMA receiver for an optical transmission system and a method of operating this receiver
12/09/1998EP0883256A1 Soliton WDM optical fibre transmission system with saturable absorbers
12/09/1998EP0883255A2 Optically amplified WDM transmission system
12/09/1998EP0883216A2 Wavelenght selectable laser with inherent wavelenght and single-mode stability
12/08/1998US5848059 Node device used in network system for packet communication, network system using such node devices, and communication method used therein
12/08/1998US5847862 Multi-channel optical fiber communication system
12/08/1998US5847852 Optical network
12/05/1998CA2239083A1 System for fibre optic transmission with soliton signals, wavelength multiplexing and saturable absorbent
12/05/1998CA2238950A1 Optically amplified wdm transmission system
12/03/1998WO1998054863A1 Span management system for wavelength division multiplexed network
12/03/1998WO1998054862A1 Signal-to-noise monitoring in wdm optical communication systems
12/03/1998WO1998054861A2 Optical multiplexing and demultiplexing
12/03/1998WO1998054854A1 Modulation format adjusting optical transponders
12/03/1998CA2291610A1 Modulation format adjusting optical transponders
12/02/1998EP0881790A1 Optical transmission system with dynamic compensation of the transmitted power
12/02/1998EP0881789A2 Receiver for an optical telecommunication system, filter arrangement and operating method therefor
12/02/1998EP0880835A2 Wdm switching network
11/1998
11/28/1998CA2235834A1 Receiver for an optical communications system and method for operating such a system
11/28/1998CA2235769A1 Receiver for an optical communications system, filter device, and method for operating such a system
11/26/1998WO1998053571A2 Distributed intelligence wavelength division multiplexed network
11/26/1998WO1998028927A3 Establishing a wireless link connecting a central terminal and a subscriber terminal of a wireless telecommunications system
11/25/1998EP0880249A2 FWM Light suppressing system
11/25/1998EP0880243A2 Optical fiber transmission line
11/25/1998EP0880041A2 Optical device for an optical network unit and manufacturing method therefor
11/25/1998EP0723716B1 Optical pulse sequence generator
11/25/1998CN1199964A Optical device for optical communication terminal station and manufacturing method therefor
11/25/1998CN1199866A Optical receiver and demultiplexer for free-space wavelength division multiplexing communications systems
11/24/1998US5841929 Light wavelength filtering circuit and manufacturing method thereof
11/24/1998US5841776 Apparatus and method for a high throughput fiber-optic access network using code division multiple access
11/24/1998US5841560 System for optical pulse train compression and packet generation
11/24/1998US5841557 Method and apparatus for scrambling the polarization of signal lights forming a wavelength division multiplexed signal light
11/24/1998US5841319 Method and apparatus for controlling gain of an amplifier by comparing a detected output envelope and a reference signal
11/19/1998WO1998052314A2 An add and drop node for optical communication systems
11/19/1998WO1998052306A2 Optical add/drop device
11/19/1998DE19720619A1 Light signal multiplexing method for optical communications or measuring system
11/18/1998EP0878977A2 Improvements in an SDH-network provided with a shared protection system
11/18/1998EP0878925A2 Wavelength locking method for tunable filter, wavelength locking apparatus and wavelength devision multiplexing communication network using the same
11/18/1998EP0878722A1 Wavelength division multiplex branching unit and method of operation for optical transmission systems
11/18/1998EP0878079A1 Self-healing network
11/17/1998US5838488 Optical amplifier gain control circuitry using a variable reference corresponding to the number of multiplexed wavelengths
11/17/1998US5838477 Optical submarine branching device
11/17/1998US5838470 Optical wavelength tracking receiver
11/16/1998CA2234908A1 Improvements in a fiber optic synchronous digital hierarchy telecommunication network provided with a protection system shared on the network
11/12/1998WO1998051024A1 Wdm optical communication systems with wavelength-stabilized optical selectors
11/12/1998CA2309437A1 Wdm optical communication systems with wavelength-stabilized optical selectors