Patents
Sitemap › H04 - Electric communication technique › H04J - Multiplex communication › H04J 14 - Optical multiplex systems
Patents for H04J 14 - Optical multiplex systems (27,009)
11/1998
11/11/1998EP0877502A2 Transmitting apparatus and receiving apparatus for wavelength-division-multiplex signal transmission
11/11/1998EP0877266A1 Selective optical device and wavelenght multiplexer-demultiplexer
11/11/1998EP0719492B1 Optical communications network
11/11/1998CN1198860A Switchable wavelength add/drop component
11/11/1998CN1198624A Wave division multiplex multi-use communication networt remote-control system
11/10/1998US5835260 Optical amplifier, optical amplifying method and optical transmission system using the optical amplifier
11/05/1998WO1998049795A1 Optical add-drop multiplexers compatible with very dense wdm optical communication systems
11/05/1998WO1998049794A2 Low loss, optical add/drop wdm node
11/05/1998WO1998049792A1 Optical transmitter
11/05/1998WO1998049582A2 Method and system for wavelength division multiplexer
11/05/1998WO1998033289A3 Switchable wavelength router
11/05/1998CA2259172A1 Optical transmitter
11/04/1998EP0876020A1 Method and device for expanding impulses forming a binary optical signal
11/04/1998EP0876019A2 Optical receiver and demultiplexer for free-space wavelength division multiplexing communications system
11/04/1998EP0876018A2 Method and circuit for data transmission in a ringnet
11/04/1998CN1198276A Improvements in or relating to optical add/drop wavelength division multiplex systems
11/03/1998US5832028 Method and apparatus for coherent serial correlation of a spread spectrum signal
11/03/1998US5831761 Wavelength division multiplexed optical waveguide system
11/03/1998US5831754 Optical amplifier
11/03/1998US5831752 Optical packet processing
10/1998
10/29/1998WO1998036294A3 Pump wavelength tuning of optical amplifiers
10/28/1998EP0874490A2 Optical transmission apparatus
10/28/1998EP0874489A2 Method and circuit for demultiplexing an optical signal
10/28/1998EP0874487A2 Transparent transport in a telecommunication system
10/28/1998EP0874480A2 Photo signal amplification transmission system
10/28/1998EP0873612A1 Switchable wavelength add/drop component
10/28/1998EP0873603A1 Optically cross-linked communication system (occs)
10/28/1998CN1197563A Improvement inor relating to optical add/drop wavelength division multiplex systems
10/28/1998CN1197562A Signal routing for fiber optic networks
10/28/1998CA2233270A1 Process and device for decompression of the pulses constituting a binary optical signal
10/27/1998US5828669 Network system connecting node devices with plural channels, node device used therein, and transmission control method therefor
10/27/1998US5828486 Optical amplifier device for wavelength division multiplexing optical transmission
10/27/1998US5828474 Communication apparatus
10/27/1998US5828472 Photonic switching matrix
10/25/1998CA2235915A1 Optical signal amplification control system
10/25/1998CA2235050A1 Wavelength dividing circuit with arrayed-waveguide grating monitor port
10/22/1998WO1998047255A1 Method and apparatus for an optical bi-directional line switched ring data communications system
10/22/1998WO1998047254A2 N x M OPTICAL WAVELENGTH ROUTING SWITCH
10/22/1998WO1998047039A2 Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
10/22/1998CA2286593A1 Method and apparatus for an optical bi-directional line switched ring data communications system
10/22/1998CA2279240A1 Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
10/21/1998CN1196849A Optically cross-linked communication system (OCCS)
10/21/1998CA2235306A1 Optical coupler
10/20/1998US5825949 Optical wavelength division multiplexer for coupling to data sources and sinks, wherein at least two data sources and sinks operate with different communication protocols
10/20/1998US5825792 Wavelength monitoring and control assembly for WDM optical transmission systems
10/20/1998US5825520 Optical demultiplexers with grating reflectors
10/20/1998US5825519 Optical mach-zehnder time division demultiplexer
10/20/1998US5825518 Optical transmission unit
10/20/1998CA2124708C Spectrum-sliced fiber amplifier light source for multi-channel wavelength-division-multiplexed applications
10/15/1998WO1998046038A2 Method for transmitting additional data signals and a useful data signal by means of optical links
10/15/1998WO1998045974A2 Access network for transmitting optical signals
10/15/1998DE19730294C1 Method of transmitting signalling and digital control information for wavelength division multiplex (WDM) networks
10/15/1998DE19714650A1 Zugangsnetz zur Übertragung von optischen Signalen Access network for transmitting optical signals
10/15/1998DE19713952C1 Verfahren zur Übertragung von Zusatzdatensignalen und einem Nutzdatensignal über optische Verbindungen A method for transmitting additional data signals and a user data signal over optical links
10/14/1998EP0871304A1 Method and device for forming an optical binary signal
10/14/1998EP0871301A2 Gain equalizer and optical amplifying transmission line
10/14/1998EP0870375A1 Transient suppression in optical wavelength division multiple network
10/13/1998US5822481 Waveguide grating optical demultiplexer
10/13/1998US5822476 Time delay device for optical signals
10/13/1998US5822474 Optical branching apparatus and transmission line setting method therefor
10/13/1998US5822096 Optoelectronic apparatus
10/13/1998US5822095 Optical add-drop multiplexer
10/10/1998CA2232526A1 Process and device to reshape binary signals
10/08/1998WO1998044660A1 Optical transmission device and method for checking transmission in an optical transmission device
10/08/1998WO1998044641A2 Optical bit rate converter
10/08/1998WO1998044605A1 Optical amplifier
10/08/1998CA2257097A1 Optical amplifier
10/07/1998EP0869694A2 Wavelength division multiplexing communications network supervisory system
10/07/1998EP0869634A2 Wavelength-division multiplexing in passive optical networks
10/07/1998EP0869633A2 Communication system capable of transmitting a plurality of signals from a station to each subscriber through an optical transmission path
10/07/1998EP0868796A1 Optical spectral multiplexer for inserting and extracting
10/07/1998EP0868794A1 Dispersion slope compensation in optical transmission systems
10/07/1998CN1195436A Add/drop multiplexer
10/06/1998US5818629 Method and apparatus for monitoring the momental wavelength of light, and an optical amplifier and an optical communication system which incorporate the method and apparatus to adjust gain tilt
10/06/1998US5818616 Optical communication apparatus and conference system
10/02/1998CA2233798A1 Communication system capable of transmitting a plurality of signals from a station to each subscriber through an optical transmission path
10/01/1998DE19712759A1 Bidirektionale optische Übertragungseinrichtung und Verfahren zur Überprüfung der Übertragung in einer bidirektionalen optischen Übertragungseinrichtung Bidirectional optical transmission device and method for checking the transmission in a bidirectional optical transmission device
09/1998
09/30/1998EP0868045A2 Time delay device for optical signals
09/30/1998EP0868044A2 Bi-directional optical transmission system
09/30/1998EP0868043A2 Multiplexed optical transmission systems
09/30/1998EP0867083A1 Meshed optical network
09/30/1998CN1194520A Optic frequency division multiplexing reference carrier replay device
09/29/1998US5815299 Method and system for equalizing respective power levels of channels of a received optical frequency division multiplexed signal
09/29/1998US5815296 Optical communication method for performing communication using a plurality of wavelengths, and optical communication system for performing communication using a plurality of wavelengths
09/29/1998US5815295 Optical communication system with improved maintenance capabilities
09/29/1998US5815294 Optical transmission system with transmission characteristic measuring device
09/24/1998WO1998042095A1 Bit-rate transparent wdm optical communication system with remodulators
09/23/1998CN1193752A Remotely pumping type multi-wavelength light transmission system
09/22/1998US5812710 Apparatus and method for optical equalization and amplification
09/22/1998US5812709 Optical device having switching function
09/22/1998US5812306 Bidirectional WDM optical communication systems with bidirectional optical amplifiers
09/22/1998US5812292 Optical correlator using optical delay loops
09/22/1998US5812291 Optical add-drop multiplexer for optical communication networks
09/22/1998US5812289 Optical repeater and optical transmitter
09/22/1998CA2130789C Fast tunable channel dropping filter
09/17/1998WO1998040981A1 Method for converting optical multiplex system channel signal modulation into subcarrier frequencies
09/16/1998EP0865173A2 A remotely pumping type multi-wavelength light transmission system
09/16/1998CN1193125A Optical wave-length filter and signal separator
09/16/1998CN1193124A Optical wavelength filter and optical signal separator
09/15/1998US5809190 Apparatus and method of making a fused dense wavelength-division multiplexer
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