Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
07/2001
07/26/2001WO2001053888A2 Optical attenuator having geometrically biased branching waveguide structure
07/26/2001WO2001053864A1 Wavelength-selective module
07/26/2001WO2000057226A8 Configurable optical add/drop device
07/26/2001US20010009469 Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods
07/26/2001US20010009465 WDM optical transmission system
07/26/2001DE10002851A1 Optical add-drop-multiplexer
07/26/2001DE10000255A1 Channel equalisation device for wavelength division multiplex transmission path - has optical spectrograph for channel separation coupled to transmission path via optical circulator with subsequent equalisation of powers of separated channels
07/25/2001EP1119119A1 Local generator with PLL for phase synchronization of clock signal with bits in optical pulse stream
07/25/2001EP1118181A1 Wdm-channel equalizer
07/25/2001EP1118180A2 Improvement in optical multichannel systems
07/25/2001EP1118179A1 Wdm optical communication system having reduced loss and cross-talk
07/25/2001CN1305668A Protection of WDM-channels
07/24/2001US6266460 Large-channel-count programmable wavelength add-drop
07/24/2001US6266169 Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal
07/24/2001US6265999 High-speed serial-to-parallel and analog-to-digital conversion
07/19/2001WO2001052451A2 System and method for measuring in-band cross-talk in optical communication systems
07/19/2001US20010008453 Optical transmission system and channel assigning method
07/19/2001US20010008452 Wavelength multiplexing optical transmission system
07/19/2001US20010008451 Optical transmission system and optical transmission apparatus used therefor
07/19/2001US20010008450 Drive method for a plurality of acousto-optic filters, acousto-optic filter apparatus, and selective wavelength extension method
07/19/2001DE19963802A1 Verfahren zur Phasensynchronisierung optischer RZ-Datensignale Method of phase synchronization of optical RZ data signals
07/19/2001CA2397231A1 System and method for measuring in-band cross-talk in optical communication systems
07/18/2001EP1117202A2 Method of communicating data in communication systems
07/18/2001EP1116346A2 Tuneable add/drop multiplexer
07/18/2001EP1116054A1 High-q optical microwave processor using hybrid delay-line filters
07/17/2001US6263138 Optical fiber for compensating chromatic dispersion of a positive chromatic dispersion optical fiber
07/17/2001US6263130 Wideband optical service channel for wave division networks
07/17/2001US6263127 Free-space/arrayed-waveguide router
07/17/2001US6262823 System for optical time domain multiplexing of digital signals
07/17/2001US6262822 Circuit for monitoring optical signals
07/17/2001US6262821 Optical spectral multiplexer for inserting and extracting
07/12/2001WO2001050664A2 Method for synchronising the phase of optical return-to-zero (rz) data signals
07/12/2001WO2001050663A1 Electromagnetic matched filter based multiple access communications systems
07/12/2001WO2001050662A1 Dwdm catv return system with up-converters to prevent fiber crosstalk
07/12/2001WO2001050661A2 System for equalizing wdm channels
07/12/2001US20010007509 Wavelength converter and wavelength division multiplexing transmission method using same
07/12/2001US20010007506 Optical transmitter, wavelength (division) multiplex optical transmitter, time division multiplex optical transmitter, optical receiver, wavelength (division) multiplex optical receiver, time division multiplex optical receiver, and an optical trasmission system using these devices
07/12/2001CA2396121A1 Method for synchronizing the phase of optical return-to-zero (rz) data signals
07/11/2001EP1115222A2 CDMA encoder-decoder, CDMA communication system, WDM-CDMA communication system
07/11/2001EP1114534A1 Method and apparatus for byte-by-byte multiplexing of data over parallel communication links
07/11/2001EP1114531A1 Method and system for detecting loss of signal in wavelength division multiplexed systems
07/11/2001EP1114349A2 Optical signal interleaver
07/11/2001CN1303195A Optical wave interleaving transmitter and receiver modules
07/11/2001CN1303023A System based on controlling transmission function of photoamplifier
07/11/2001CN1068484C Multi-channel optical fiber communication system
07/10/2001US6259836 Optical frequency shifter and transmission system
07/10/2001US6259723 Data communication system
07/10/2001US6259702 Server system for delivering signal and delivery method of signal therein
07/10/2001US6259556 Optical fibre amplifier having a controlled gain
07/10/2001US6259555 Multi-band amplification system for dense wavelength division multiplexing
07/10/2001US6259553 Optical communication system and optical amplifier
07/10/2001US6259552 Optical wavelength converter
07/10/2001CA2224851C Optical arrangement for amplifying wdm signals
07/10/2001CA2211644C Optical demultiplexor
07/05/2001WO2001048962A1 Optical management channel for wavelength division multiplexed systems
07/05/2001WO2001048961A1 Optical apparatus for dropping and/or adding optical signals
07/05/2001WO2001048938A1 Protection in mixed optical wdm systems
07/05/2001US20010006568 11/2 X 2 Optical switch
07/04/2001EP1113613A2 Wavelength converting apparatus and wavelength division multiplexing system using same
07/04/2001EP1113597A2 System based control of optical amplifier transmission functions
07/04/2001EP1113587A1 Protection in mixed optical WDM systems
07/04/2001EP1112517A1 Time-wavelength multiple access optical communication systems and methods
07/04/2001CN1302129A Nodal structure of staging wave separation shared system
07/03/2001US6256433 Expandable interleaving optical add/drop filter module
07/03/2001US6256432 Polarization independent all-optical demultiplexer
07/03/2001US6256431 WDM multiplexer
07/03/2001US6256428 Cascading of tunable optical filter elements
07/03/2001US6256427 Process for creating several data circuits on an optical fiber and device for embodiment of the process
07/03/2001US6256141 Optical amplification apparatus
07/03/2001US6256127 Modulation format adjusting optical transponders
07/03/2001US6256126 NB-WDM system and method for establishing wavelength number information of same
07/03/2001US6256125 WDM optical transmission system
07/03/2001US6256124 Combination photonic time and wavelength division multiplexer
06/2001
06/30/2001CA2328562A1 Multi-pass folded interleaver/deinterleavers
06/28/2001WO2001047164A1 Two-fiber interconnected ring architecture
06/28/2001WO2001047163A1 Dispersion compensation for optical systems
06/28/2001WO2001047159A1 Method and apparatus for transporting gigabit ethernet and fiber channel signals in wavelength-division multiplexed systems
06/28/2001WO2001047151A1 Optical power balancer for optical amplified wdm networks
06/28/2001WO2001046731A2 Reconfigurable add/drop multiplexer for fiber optic networks
06/28/2001WO2001046723A2 Method for altering the refractive index of optical fibers using stress
06/28/2001WO2000075711A3 Fiber optic smart switch
06/28/2001US20010005271 Device for applying time-delays to optical signals
06/28/2001DE19959813A1 Synchrones digitales Nachrichtenübertragungssystem Synchronous digital communication system
06/28/2001CA2395303A1 Two-fiber interconnected ring architecture
06/28/2001CA2394786A1 Method for altering the refractive index of optical fibers using stress
06/27/2001EP1111955A2 A strictly non-blocking wavelength division multiplexed (WDM) cross-connect device for use in a network
06/27/2001EP1111953A2 An optical switching node and method for operating same
06/27/2001EP1111831A2 Method of deactivating fiber resources in optical ring networks
06/27/2001EP1111820A1 Apparatus for applying a delay
06/27/2001EP1110343A1 Wdm ring network
06/27/2001EP1110338A1 Method and apparatus for optical system link control
06/27/2001CN1301094A Optical deplexing/complexing device
06/27/2001CN1301093A Complete non-blocked wave division multiple address cross connecting apparatus
06/26/2001US6252719 Beam splitter/combiner module
06/26/2001US6252711 Polarization diversity for birefingent filters
06/26/2001US6252688 Optical wavelength multiplex transmission method and optical dispersion compensation method
06/26/2001US6252687 Optical wavelength multiplex transmission method and optical dispersion compensation method
06/26/2001CA2200300C Efficient optical wavelength multiplexer/de-multiplexer
06/23/2001CA2327904A1 A strictly non-blocking wavelength division multiplexed (wdm) cross-connect device for use in a network
06/23/2001CA2317907A1 Method and apparatus for providing a more efficient use of the total bandwidth capacity in a synchronous optical network