Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
06/2002
06/13/2002US20020071164 Optically amplified back-up receiver
06/13/2002US20020071159 Network transceiver for extending the bandwidth of optical fiber-based network infrastructure
06/13/2002US20020071156 Optical add/drop multiplexer
06/13/2002US20020071155 Cross phase modulation suppressing device in wavelength division multiplexing optical transmission system and optical communication system
06/13/2002US20020071154 Shared optical ring protection in a multi-fiber ring
06/13/2002US20020071153 Method for composite packet-switching over WDM by transparent photonic slot routing
06/13/2002US20020071152 System and method of all optical label swapping using two-stage optical wavelength converters
06/13/2002US20020071151 Module and method for reconfiguring optical networks
06/13/2002US20020071150 Apparatus and method for controlling routing
06/13/2002US20020071149 Apparatus and method for protection of an asynchronous transfer mode passive optical network interface
06/13/2002US20020071148 Optical communications network and nodes for forming such a network
06/13/2002DE10146366A1 Optische Ultrahochgeschwindigkeits-Wellenlängen-Wandlervorrichtung zum Ermöglichen einer gleichzeitigen Extraktion von allen optischen Verriegelungssignalen Ultra-high speed optical wavelength converting device for enabling simultaneous extraction of all optical signals, locking
06/13/2002DE10059559A1 Verfahren und Vorrichtung zur Datenübertragung über Lichtwellenleiter Method and apparatus for data transmission via fiber optics
06/12/2002EP1213944A2 Module and method for reconfiguring optical networks
06/12/2002EP1213866A1 Interleaved bands demultiplexing/multiplexing system
06/12/2002EP1213865A1 Wavelength division multiplex optical transmitter
06/12/2002EP1213595A2 Chromatic dispersion compensation in a fiber transmission system and compensation fiber
06/12/2002EP1212862A2 Optical transmission systems, devices, and methods
06/12/2002EP1212861A1 Optical fiber ring communication system
06/12/2002EP0873612A4 Switchable wavelength add/drop component
06/12/2002CN1353519A Wave length selector and invertor equipment and photon interchange matrix containing said equipment
06/11/2002US6404950 Dispersion-compensating module
06/11/2002US6404948 Dense WDM optical multiplexer and demultiplexer
06/11/2002US6404940 Optical cross connect apparatus and optical network
06/11/2002US6404528 Receiver for an optical communications system and method for operating such a system
06/11/2002US6404525 Optical add-drop multiplexer
06/11/2002US6404524 Method and system for securing wavelength division multiplex systems
06/11/2002US6404523 Wavelength division multiplexing system and its termination
06/11/2002US6404522 Optical communication method and system using wavelength division multiplexing
06/11/2002US6404521 Filters to adjust DWDM transmissivity
06/10/2002CA2361854A1 Module and method for reconfiguring optical networks
06/08/2002CA2327906A1 Apparatus and method for attaching a data sub-channel to a digital payload
06/06/2002WO2002045312A2 Method and device for transmitting data via optical waveguides
06/06/2002WO2002045301A2 Optically amplified receiver
06/06/2002WO2002009299A3 Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified dwdm system
06/06/2002WO2001041346A3 Multichannel optical communication system and method utilizing wavelength and coherence division multiplexing
06/06/2002US20020067883 System and method for increasing channel capacity of fiber-optic communication networks
06/06/2002US20020067538 Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
06/06/2002US20020067532 Optical receiving apparatus and method
06/06/2002US20020067529 Passive optical network transmission system, ATM-passive optical network transmission system, optical network unit of ATM-passive optical network transmission system, and optical line terminator of ATM-passive optical network transmission system
06/06/2002US20020067527 Optical time-division multiplex signal processing apparatus and method, optical time-division multiplex signal receiver
06/06/2002US20020067526 Bi-directional optical add/drop multiplexer
06/06/2002US20020067525 Wavelength division multiplex optical transmission system
06/06/2002US20020067524 Optical communications terminal station, optical signal transmission method, and optical signal increasing method in wavelength multiplexing system
06/06/2002US20020067523 Interconnected broadcast and select optical networks with shared wavelengths
06/06/2002US20020067487 Adjustable chromatic dispersion compensation
06/06/2002DE10057659A1 Optical transmission system has cascaded Raman amplifiers with several pump sources with different wavelengths set to achieve flat gain spectrum for signal with several optical channels
06/06/2002DE10056600A1 Electro-optical transceiver for wavelength multiplex system uses two phased array waveguide gratings
06/05/2002EP1211850A1 Optical multiple branching communicate system, parent station device used therefore, child station device, optical multiple branching communication band control method
06/05/2002EP1211763A1 Wavelength multiplexer
06/05/2002EP1211533A2 Optical fibre and optical communication system using this optical fiber
06/05/2002EP1210804A1 Device and method for compensating for propagation delay
06/05/2002EP1210785A1 Device and method for optical transmission of information
06/05/2002EP1210782A1 Optical power management in an optical network
06/05/2002EP1210781A1 Dense wavelength division multiplexer (dwdm) monitoring system
06/05/2002EP1210628A1 Segmented thin film add/drop switch and multiplexer
06/05/2002CN1352842A Optical communications network
06/05/2002CN1352841A Optical communications network
06/04/2002US6400864 Broad band semiconductor optical amplifier module having optical amplifiers for amplifying demutiplexed signals of different wavelengths and optical communication system using it
06/04/2002US6400861 Optical demultiplexer architecture
06/04/2002US6400859 Optical ring protection having matched nodes and alternate secondary path
06/04/2002US6400705 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
06/04/2002US6400498 Reception sensitivity enhanced by removing an ase noise, the total optical intensity of optical signals to be output after wavelength multiplexing can be increased, and the level of wavelength lights in wdm optical signal can be equalized.
06/04/2002US6400496 Optically amplified WDM transmission system
06/04/2002US6400479 Optical power balancer for optical amplified WDM networks
06/04/2002US6400478 Wavelength-division-multiplexed optical transmission system with expanded bidirectional transmission capacity over a single fiber
06/04/2002US6400475 Optical transmission system and optical communications device
06/04/2002US6400300 D/A converter street effect compensation
05/2002
05/30/2002WO2002043298A1 Asymmetric orthogonal codes for optical communications
05/30/2002WO2002043296A2 Birefringent interleaver for wdm fiber optic communications
05/30/2002WO2002042821A1 Integrated optical multiplexer and demultiplexer
05/30/2002WO2002042802A2 Optical polarization encoder
05/30/2002WO2002007347A3 Laser safety method for duplex open loop parallel optical link
05/30/2002WO2002005439A3 Bi-directional wavelength switched ring optical protection switching wavelength assignment algorithm
05/30/2002US20020064340 Optical wavelength-multiplexing technique
05/30/2002US20020064336 Protection switching arrangement for an optical switching system
05/30/2002US20020064165 System for composit packet-switching over WDM by transparent photonic slot routing
05/30/2002US20020063944 Ultra-high speed optical wavelength converter apparatus for enabling simultaneous extraction of all optical clock signals
05/30/2002US20020063932 Multiple access system for communications network
05/30/2002US20020063929 Optical communication system
05/30/2002US20020063928 Filtering of data-encoded optical signals
05/30/2002US20020063926 Optical cross-connect device and system having the device
05/30/2002US20020063925 Broadcast type optical network system using loop shaped optical networks
05/30/2002US20020063923 System and method for improving optical signal-to-noise ratio measurement range of a monitoring device
05/30/2002US20020063921 Wavelength division multiplexing communications network supervisory system
05/30/2002US20020063920 Optical transmitter
05/30/2002US20020063919 Optical modulator and method for polarization bit interleaving
05/29/2002EP1209826A1 Optical communication system with cascaded Raman amplifiers, each having multiple pump sources
05/29/2002EP1209453A2 Monochrometer and wavelength division multiplexer comprising said monochrometer
05/29/2002EP1208395A2 Fiber optic cable for increased transmission capacity and wavelength division multiplexing optical transmission system using the same
05/29/2002DE10056220A1 Verfahren zur Übertragung von verketteten Datensignalen Method for transmitting data signals concatenated
05/29/2002DE10055477A1 Frequency-dependent division/influencing of WDM system data signals involves passing all signals of channels in defined band via one branch associated with band with influencing device(s)
05/29/2002DE10055476A1 Optisches Koppelfeld Optical switching matrix
05/29/2002DE10055189A1 Optical add-drop multiplexer in all fiber arrangement, has mode-selective fiber couplers and at least one fiber Bragg grid in multimode connection fiber between mode-selective fiber couplers
05/29/2002DE10054372A1 Unit for multiplexing and/or demultiplexing optical signals, has at least one wavelength selective filter that is adjustable in terms of angle of incidence of light beams
05/29/2002CN1351786A Add-drop-multiplexer and optical wavelength division multiplex transmission system
05/29/2002CN1085913C Light time decomposition multiplex device and signal switching method and light time division multiplex transmission system thereof
05/28/2002US6396801 Arbitrary waveform modem
05/28/2002US6396629 Multi-functional optical device utilizing multiple birefringent plates and a non-linear interferometer
05/28/2002US6396609 Dispersion compensation for optical systems