| Patents for H04J 14 - Optical multiplex systems (27,009) | 
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| 01/10/2002 | US20020003647 Optical transmission system, its method, and optical amplification transmission line | 
| 01/10/2002 | US20020003644 Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer | 
| 01/10/2002 | US20020003643 Multi-channel wavelength slicing using an etalon-based interleaver for dense wavelength division multiplexing | 
| 01/10/2002 | US20020003642 Combination photonic time and wavelength division multiplexer | 
| 01/10/2002 | US20020003641 Polarization division multiplexer | 
| 01/10/2002 | US20020003639 Autoprotected optical communication ring network | 
| 01/10/2002 | EP1145497A3 Asymmetric wdm packet-switched router architecture and method for generating same | 
| 01/10/2002 | DE10122010A1 Multiplexing/demultiplexing arrangement, has polarizing element; waves enter element linearly polarized; statistically polarized waves are separated into two linearly polarized waves | 
| 01/10/2002 | CA2415099A1 Improved shortest path first restoration routing in a fiberoptic network | 
| 01/10/2002 | CA2411557A1 Method for determining the optimum pre-compensation in an optical transmission system | 
| 01/09/2002 | EP1170895A1 Optical transmission system with reduced raman effect depletion. | 
| 01/09/2002 | EP1170888A1 Optical fiber raman amplifier gain equalisation | 
| 01/09/2002 | EP1170887A2 Optical communications transmitting apparatus | 
| 01/09/2002 | EP1170605A2 Planar waveguide grating device having a passband with a flat-top and sharp-transitions | 
| 01/09/2002 | CN1330468A Control channel processor and conversion mechanism | 
| 01/09/2002 | CN1330463A Bidirectional optical transmission using double-channel wave band | 
| 01/08/2002 | US6337933 Narrow bandwidth fiber bragg grating apparatus | 
| 01/08/2002 | US6337753 Optical power equalizer | 
| 01/07/2002 | CA2352113A1 Optical modulator and method for polarization bit interleaving | 
| 01/03/2002 | WO2002001777A1 Bi-directional wavelength division multiplexing/demultiplexing devices | 
| 01/03/2002 | WO2002001772A2 Optical wavelength-division multiplexing and demultiplexing by using a common optical bandpass filter | 
| 01/03/2002 | WO2002001766A1 Chromatic dispersion compensation in a broadband optical transmission system | 
| 01/03/2002 | WO2002001725A1 Optical transmitter and code converting circuit used therefor | 
| 01/03/2002 | WO2002001723A1 Control circuit, and system using same | 
| 01/03/2002 | WO2002001684A1 Optical amplifier device | 
| 01/03/2002 | US20020001433 Arrayed waveguide grating and optical communication system using arrayed waveguide grating | 
| 01/03/2002 | US20020001124 Optical amplification method and device usable with bands other than the C-band | 
| 01/03/2002 | US20020001114 Method and apparatus for demultiplexing high bit rate optical signals on dense wavelength grid | 
| 01/03/2002 | US20020001113 Multiplex transmission apparatus | 
| 01/03/2002 | DE10024238A1 Verfahren zur Qualitäts-und Identitätskontrolle von Wellenlängenkanälen in optischen Übertragungsnetzen A method for quality control and identity of wavelength channels in optical transmission systems | 
| 01/03/2002 | CA2413693A1 Bi-directional wavelength division multiplexing/demultiplexing devices | 
| 01/02/2002 | EP1168697A2 Multiplex transmission apparatus | 
| 01/02/2002 | EP1168686A1 Bi-directional optical transmission using dual channel bands | 
| 01/02/2002 | EP1168685A1 Chromatic dispersion compensation in a wideband optical transmission system | 
| 01/02/2002 | EP1168684A2 Apparatus for detecting Raman scattering in an optical transmission system | 
| 01/02/2002 | EP1168680A2 Method and apparatus for analyzing wavelength-division multiplexed signal light | 
| 01/02/2002 | EP1168010A2 Optical multi/demultiplexer | 
| 01/02/2002 | EP1166482A1 Method and apparatus for wavelenght multiplexing/demultiplexing | 
| 01/02/2002 | EP1166475A1 A receiver transponder for protected networks | 
| 01/02/2002 | EP0764376B1 Wavelength division multiplexed optical modulator | 
| 01/02/2002 | CN2469469Y Photo-communication network passive component in model of multiband transmitting or reflecting | 
| 01/02/2002 | CN1329267A Amplifier of wavelength division multiplexing system and method for amplifying light signal | 
| 01/02/2002 | CN1077371C Insertion-extraction optical frequency division multiplexer | 
| 01/01/2002 | US6336201 Synchronization in a communications system with multicarrier telephony transport | 
| 01/01/2002 | US6335810 Optical ADM apparatus and an ADM optical transmission system including the optical ADM apparatus | 
| 12/27/2001 | WO2001099352A1 Optical multiple branching communicate system, parent station device used therefore, child station device, optical multiple branching communication band control method | 
| 12/27/2001 | WO2001099351A1 Light burst transmission/reception control system, parent station device used in the same, child station device, and light burst transmission/reception control method | 
| 12/27/2001 | WO2001099347A2 Shared optical ring protection in a multi-fiber ring | 
| 12/27/2001 | WO2001099323A1 Data transmission system | 
| 12/27/2001 | WO2001099322A1 Data transmission system | 
| 12/27/2001 | WO2001098824A1 Optical signal ultrahigh-speed time-space converting method | 
| 12/27/2001 | WO2001067643A3 Optical code generation and detection by means of fiber bragg gratings | 
| 12/27/2001 | US20010055442 Optical wavelength-division multiplexing and demultiplexing by using a common optical bandpass filter for adding, dropping, or excanging one or more channels | 
| 12/27/2001 | US20010055437 Compensation for polarization-mode dispersion in multiple wavelength-division multiplexed channels without separate composition for each individual channel | 
| 12/27/2001 | US20010055309 System and method for communicating between distant regions | 
| 12/27/2001 | US20010055148 Optical wavelength converter and optical wavelength division multiplexing communication system using the same | 
| 12/27/2001 | US20010055138 Optical transmission system and method | 
| 12/27/2001 | US20010055136 Optical data transmission method and its system, optical transmitter and its method, and optical switcher | 
| 12/27/2001 | US20010055135 Optical network element | 
| 12/27/2001 | CA2414043A1 Shared optical ring protection in a multi-fiber ring | 
| 12/26/2001 | CN1328729A WDM-channel equalizer | 
| 12/26/2001 | CN1328390A Integrated damultiplexing light receiver and its preparing process | 
| 12/25/2001 | US6334219 Channel selection for a hybrid fiber coax network | 
| 12/25/2001 | US6333807 Optical filter | 
| 12/25/2001 | US6333805 Optical output control circuit | 
| 12/25/2001 | US6333803 Optical transmitter | 
| 12/25/2001 | US6333800 Optical communication system using wavelength-division multiplexed light | 
| 12/25/2001 | US6333799 Hybrid wavelength-interchanging cross-connect | 
| 12/25/2001 | US6333798 Bidirectional WDM optical communication network | 
| 12/22/2001 | CA2311750A1 Circuits for multiple wavelength fiber optic communication system | 
| 12/20/2001 | WO2001097487A2 Automatic assignment of addresses to nodes in a network | 
| 12/20/2001 | WO2001097426A2 Apparatus and method for demultiplexing a time multiplexed signal | 
| 12/20/2001 | WO2001097425A1 Beam combiner | 
| 12/20/2001 | WO2001097424A1 Wdm signal monitoring | 
| 12/20/2001 | WO2001097413A1 Reflector with non-reciprocal optical components | 
| 12/20/2001 | WO2001097412A2 Optical communications system utilizing frequency division multiplexing | 
| 12/20/2001 | WO2001096910A2 Thermally stable mounting for a diffraction grating device | 
| 12/20/2001 | WO2001063818A8 Distributed amplification edfl multiple wavelength laser source | 
| 12/20/2001 | WO2001046723A3 Method for altering the refractive index of optical fibers using stress | 
| 12/20/2001 | US20010053263 Optical fiber communication system using optical phase conjugation as well as apparatus applicable to the system and method of producing the same | 
| 12/20/2001 | US20010053015 Method and apparatus for cross-connecting optical transmission signals | 
| 12/20/2001 | US20010053011 Wavelength division multiplex optical star coupler, communication station, and optical transmission system | 
| 12/20/2001 | US20010053007 Optical pulse period compressing apparatus and method | 
| 12/20/2001 | US20010053006 Wavelength division multiplex transmission system | 
| 12/20/2001 | US20010053005 System for suppressing instabilities in an optical wavelength division multiplex ring network | 
| 12/20/2001 | CA2411538A1 Beam combiner | 
| 12/19/2001 | EP1164811A2 Control channel processor and switching mechanism | 
| 12/19/2001 | EP1164738A2 Wavelength division multiplex transmission system | 
| 12/19/2001 | EP1164737A1 Wavelength allocation scheme and Wdm equipment | 
| 12/19/2001 | EP1163751A2 Otpical mux/demux | 
| 12/19/2001 | EP1163582A1 Fault protection in networks | 
| 12/19/2001 | CN1327543A Optical signal interleaver | 
| 12/18/2001 | US6332050 Optical slab waveguide for massive, high-speed interconnects | 
| 12/18/2001 | US6331907 Multi-wavelength light source and discrete-wavelength-variable light source | 
| 12/18/2001 | US6331906 Method and apparatus for operation, protection and restoration of heterogeneous optical communication networks | 
| 12/18/2001 | CA2218980C Time division demultiplexing using selective raman amplification | 
| 12/18/2001 | CA2213839C Cross-connect node for switching quality detector to incoming signal specified by request message from adjacent node | 
| 12/13/2001 | WO2001095542A2 Athermalization and pressure desensitization of diffraction grating based spectrometer devices | 
| 12/13/2001 | WO2001095541A2 Optical performance monitor with optimized focus spot size | 
| 12/13/2001 | WO2001095540A2 Device and method for optical performance monitoring in an optical communications network |