Patents
Patents for H04J 14 - Optical multiplex systems (27,009)
01/2003
01/02/2003US20030002100 Wireless wavelength division multiplexed system
01/02/2003US20030002098 System and method for measuring power of optical signals carried over a fiber optic link
01/02/2003EP1271827A1 Wavelength-selective add/drop arrangement for optical communication systems
01/02/2003EP1271826A2 Optical transmission system with bidirectional connection paths and method for setting at least one bidirectional connection path
01/02/2003EP1271825A1 Method and system for multiplexed optical information transport
01/02/2003EP1271811A1 Method and device for amplifying WDM signals using stimulated Brillouin process
01/02/2003EP1271810A2 Method and device for shaping the waveform of an optical signal
01/02/2003EP1271807A1 Optical vestigial sideband modulator
01/02/2003EP1269672A1 Multiple input waveguide grating router for broadcast and multicast services
01/02/2003EP1269671A1 Method and system for providing multiple classes of services in dense wavelength division multiplexing optical networks
01/02/2003EP1269663A1 A communications network architecture
01/02/2003EP1269662A1 Power controlling network element
01/02/2003EP1269230A2 Method for altering the refractive index of optical fibers using stress
01/01/2003CN2529461Y Optical separation multiplex apparatus
01/01/2003CN1388669A Holographic Fresnel congested wavelength division multiplexer and its making method and apparatus
01/01/2003CN1097905C Network system for communicating with plural channels node device and communication method
12/2002
12/31/2002US6501877 Wavelength router
12/31/2002US6501872 Bragg grating assisted MMIMI-coupler for tunable add-drop multiplexing
12/31/2002US6501866 Method and apparatus for cross-connecting optical transmission signals
12/31/2002US6501774 Optical transmission apparatus for multiple wavelengths and optical transmission wavelength control method
12/31/2002US6501575 Routing in a WDM system
12/31/2002US6501574 Optical multiplex transmission apparatus and optical multiplex transmission method
12/31/2002CA2235083C Transparent transport
12/29/2002CA2384236A1 Wavelength-selective add/drop arrangement for optical communication systems
12/28/2002CA2392123A1 Evolution of a telecommunications network from ring to mesh structure
12/27/2002WO2002104064A2 Optical connection arrangements
12/27/2002WO2002103948A1 Optical communication system
12/27/2002WO2002103939A1 Optical network system and controller
12/27/2002WO2002103935A1 Optical communication device and system
12/27/2002WO2002103449A1 Monolithic integrated terahertz optical asymmetric demultiplexer
12/27/2002WO2002103447A1 Wavelength selective optical device
12/27/2002WO2002103421A1 Process to create artificial nerves for biomechanical systems using optical waveguide network
12/27/2002WO2002103418A2 Integrated optical device
12/27/2002WO2002084901A3 Method for controlling a laser-based 3r regenerator
12/27/2002WO2002073855A3 Self-healing ring structure for the optical transmission of information by wavelength division multiplexing and corresponding add/drop-multiplexer
12/27/2002WO2002071670A3 Method and system for handling optical signals
12/27/2002WO2002067481A9 Widely tunable and integrated optical system and method
12/27/2002WO2002001772A9 Optical wavelength-division multiplexing and demultiplexing by using a common optical bandpass filter
12/26/2002US20020197000 Optical cross-connect switch using programmable multiplexers/demultiplexers
12/26/2002US20020196808 Signaling for reserving a communications path
12/26/2002US20020196549 Multi-pass configurations
12/26/2002US20020196528 Optical amplifier modules
12/26/2002US20020196527 Method for the amplification of wavelength division multiplex (WDM) signals in a WDM transmission system, as well as optical amplifier, optical amplifier system and WDM transmission system for it
12/26/2002US20020196520 Programmable optical multiplexer/demultiplexer
12/26/2002US20020196509 Light source for generating an output signal having spaced apart frequencies
12/26/2002US20020196499 Method and system for multiplexed optical information transport
12/26/2002US20020196498 Optical pulse addition device
12/26/2002US20020196497 Optical time division multiplexing/demultiplexing system
12/26/2002US20020196495 Device for adding and dropping optical signals
12/26/2002US20020196494 Programmable optical add/drop multiplexer
12/26/2002US20020196493 Tunable, multi-port optical add-drop multiplexer
12/26/2002US20020196492 Method and apparatus for dynamic equalization in wavelength division multiplexing
12/26/2002US20020196491 Passive optical network employing coarse wavelength division multiplexing and related methods
12/26/2002US20020196490 Optical transmission systems, devices, and methods
12/26/2002US20020196489 Wavelength division multiplexing communications network supervisory system
12/26/2002US20020196430 Measuring optical signal power in an optical system
12/25/2002CN1387336A Wide-range extenal cavity tunable laser device
12/25/2002CN1387059A Wave division multiplexer based on more sub-rasters for flat-top etching and diffracting raster
12/25/2002CA2382241A1 Method and system for multiplexed optical information transport
12/24/2002US6498871 Wavelength stabilized light source
12/24/2002US6498869 Devices for depolarizing polarized light
12/24/2002US6498680 Compact tunable optical wavelength interleaver
12/24/2002US6498670 Optical receiving apparatus and method
12/24/2002US6498665 System for adding/dropping wavelength division multiplexed optical signals
12/24/2002US6498664 Wavelength division multiplexing transmission device and method having waveform discriminating function, and wavelength division multiplexing transmission system
12/21/2002CA2384234A1 Long haul transmission in a dispersion managed optical communication system
12/19/2002WO2002101965A2 Routing and switching in a hybrid network
12/19/2002WO2002101964A1 Multichannel wavelength monitoring apparatus
12/19/2002WO2002101963A1 Communications network
12/19/2002WO2002101451A1 Apparatus and method for processing light
12/19/2002WO2001079898A9 Optical filter having a quartz substrate
12/19/2002US20020191913 Apparatus and method for processing light
12/19/2002US20020191906 Optical transmission apparatuses, methods, and systems
12/19/2002US20020191904 Multi-wavelength optical modulation circuit and wavelength-division multiplexed optical signal transmitter
12/19/2002US20020191903 Method and transmission system for optimization of the transmission characteristics of an optical wavelength division multiplex system
12/19/2002US20020191899 Optical connection arrangements
12/19/2002US20020191538 Bi-directional line switched ring with uninterrupted service restoration
12/19/2002US20020191276 Optical amplifier for amplifying multi-wavelength light
12/19/2002US20020191262 Optical transmitter and optical modulator
12/19/2002US20020191255 Method for synchronizing the phase of optical return-to-zero (rz) data signals
12/19/2002US20020191249 Optical ADD DROP multiplexer
12/19/2002US20020191247 Fast restoration in optical mesh network
12/19/2002US20020191245 Virtual protection channel for fiber optic ring network
12/19/2002US20020191244 Disjoint shared protection
12/18/2002EP1267589A2 Optical node unit, wavelength multiplexing optical transmission system, and wavelength separating method
12/18/2002EP1267587A2 Communications network
12/18/2002EP1267510A2 Multi-wavelength optical modulation circuit and wavelength-division multiplexed optical signal transmitter
12/18/2002EP1267509A1 Method of organizing wavelength channels in a WDM network and optical hub, optical add/drop multiplexer and optical filter bank therefor
12/18/2002EP1267504A2 Optical communication link
12/18/2002EP1266473A1 Apparatus and method for wavelength selective switching
12/18/2002EP1266472A1 A method of sending packet-formed information optically using different wavelengths for address and useful information
12/18/2002EP1266471A1 Device and method for optical add/drop multiplexing
12/18/2002EP1266198A1 Optical module for the wavelength reference measurement in wdm systems
12/18/2002EP1119795B1 Optical filter, adjustable add-drop-continue module and circuit for bundled cross-connect functionality
12/18/2002EP0917774B1 System with optical amplifier
12/18/2002CN2527039Y All optical wavetength converter based on short coherence length semiconductor integrated light source
12/18/2002CN1385720A Two-dimension optical switcvh matrix made by adopting double piezoelectric crystal chip driver
12/17/2002US6496619 Method for gain equalization, and device and system for use in carrying out the method
12/17/2002US6496611 Multichannel optical spectrum slicer and method of measuring modal birefringence and/or polarization mode dispersion of slicer itself
12/17/2002US6496300 Optical amplifier