Patents
Patents for H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125)
11/2002
11/21/2002US20020172453 Network healing smart fiber optic switch
11/21/2002US20020172228 Method and system for gallvanically isolated transmission of gigabit/sec data via a slip ring arrangement
11/21/2002US20020172216 Control system using a mini slot signal in a passive optical network
11/21/2002US20020172134 Method and system for suppressing spurious reflections
11/21/2002US20020171920 Optical signal processing method and apparatus
11/21/2002US20020171917 Optical amplifier performance controller and method of use
11/21/2002US20020171914 Bidirectional multichannel optical telecommunication system
11/21/2002US20020171903 Return-to-zero optical modulator with configurable pulse width
11/21/2002US20020171900 Method and circuit for generating single-sideband optical signal
11/21/2002US20020171899 Increased transmission capacity for a fiber-optic link
11/21/2002US20020171898 Method and apparatus for using strategically located reflectors to create pathways for networking of line-of-sight computing devices
11/21/2002US20020171897 System and method for a high-speed, customizible subscriber network using optical wireless links
11/21/2002US20020171896 Free-space optical communication system employing wavelength conversion
11/21/2002US20020171894 Optical linearizer for fiber communications
11/21/2002US20020171893 Apparatus and method for self-routing optical packet
11/21/2002US20020171892 Method and system for diverting traffic in a communication network
11/21/2002US20020171891 Optical apparatus using a 2D-spatial light modulator
11/21/2002US20020171890 Optical add/drop multiplexer using integrated optical components
11/21/2002US20020171889 Light-transmitting apparatus and wavelength-division-multiplexing communication system having optical-signal-abnormality-detecting function
11/21/2002US20020171885 Circuit for measurement of the signal quality in digital optical fiber transmission networks by interpreting the signal histogram
11/21/2002US20020171884 High efficiency optical traffic monitoring and reporting
11/21/2002US20020171835 Frequency comb analysis
11/21/2002US20020171639 Methods and apparatus for transmitting data over graphic displays
11/21/2002US20020170289 Swash plate type hydraulic drive transmission and hydrostatic type continuously variable transmission
11/21/2002DE10121529A1 Flat electrooptical component for sending and receiving electrical and optical signals has central emission area, sensor area, reflector area, control and signal output arrangements
11/21/2002DE10120276A1 Verfahren und Übertragungssystem zur Optimierung der Übertragungseigenschaften eines optischen Wellenlängen-Multiplex-Systems A method and transmission system for optimizing the transmission characteristics of an optical wavelength multiplexing system
11/20/2002EP1259022A1 Optical device for the clock recovery of an optical signal
11/20/2002EP1259011A2 Common protection architecture for optical network
11/20/2002EP1258061A1 In fiber frequency locker
11/20/2002EP1257857A1 Method and apparatus for chromatic dispersion compensation and dispersion slope compensation in wavelength division multiplexed systems utilizing a channel separator and virtually imaged phased arrays
11/20/2002EP1257853A1 Wraparound optical switch matrix
11/20/2002EP1257852A1 Composite optical fiber transmission line and method
11/20/2002EP1171968B1 Device and method for compensating polarization mode dispersion in an optical communication system
11/20/2002EP1142167B1 Optical fibre transmission system with chromatic dispersion compensation
11/20/2002CN2521792Y Optical fibre element with equating power
11/20/2002CN1380758A Control method of optical amplification medium, optical amplifier and system using it
11/20/2002CN1380757A Burst time-delay control device in ATM passive optic network system and its implement method
11/20/2002CN1380496A Slope plate type hydraulic action device and static pressure stepless speed variator
11/19/2002US6484114 Method for calibrating a free-space-coupled fiber-optic transmission system
11/19/2002US6484073 Method and device for determining the position of communication satellites
11/19/2002US6483970 Fiber optic cable and optical transmission system
11/19/2002US6483958 PMD compensator
11/19/2002US6483957 MEMS-based polarization mode dispersion compensator
11/19/2002US6483956 Fiber frequency locker
11/19/2002US6483803 Apparatus and method for restoring fiber optic communications network connections
11/19/2002US6483637 System and method for per-band optical amplification
11/19/2002US6483636 Optical amplifier
11/19/2002US6483633 Raman amplifier
11/19/2002US6483632 Multistage optical amplifier with gain flattening
11/19/2002US6483631 Optical amplifier spectral tilt controllers
11/19/2002US6483630 Optical amplifier, method of controlling the output light from the optical amplifier, optical transmission system and method of controlling an optical transmission path cross reference to related application
11/19/2002US6483625 WDM optical transmission apparatus
11/19/2002US6483622 Mobile data terminal with an infrared communication capability
11/19/2002US6483621 Method and apparatus for tone tracking in wireless optical communication systems
11/19/2002US6483620 Polarization mode dispersion measurement
11/19/2002US6483618 Narrow band wavelength division demultiplexer and method of demultiplexing optical signals
11/19/2002US6483617 Monitoring of nonlinear effects
11/19/2002US6483616 Safe repair of malfunction in optical communication system
11/19/2002US6481861 Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion
11/19/2002CA2270738C Circuit for monitoring optical signals
11/19/2002CA2267018C Optical wavelength converter with active waveguide
11/19/2002CA2256186C Optical wavelength routing device
11/14/2002WO2002091660A1 Method and system for communicating a clock signal over an optical link
11/14/2002WO2002091646A1 Method and system for coordinating and utilizing channel power information in an optical communications network
11/14/2002WO2002091645A1 Method and system for demultiplexing non-intensity modulated wavelength division multiplexed (wdm) signals
11/14/2002WO2002091644A1 Receiver and method of receiving a multichannel optical signal
11/14/2002WO2002091638A1 Method and system for transmitting information in an optical communication system using distributed amplification
11/14/2002WO2002091637A2 Dynamic optical interconnect
11/14/2002WO2002091636A2 Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
11/14/2002WO2002091635A1 Method and system for determining channel power in an optical communications network
11/14/2002WO2002091634A2 Method and system for tuning an optical signal based on transmission conditions
11/14/2002WO2002091065A1 A method for searching and tracking wavelength with variable step-length
11/14/2002WO2002091031A2 N-way broadcast/narrowcast combiner
11/14/2002WO2002091029A2 Split redundant trunk architecture using passive splitters and path switching
11/14/2002WO2002091027A2 Method and system for controlling amplifier power in an optical communications network having add/drop capability
11/14/2002WO2002075371A3 Dwdm ring networks using wavelength selected switches
11/14/2002WO2002003123A9 Optical tapped delay line
11/14/2002WO2001022628A9 Channel gain control for an optical communications system utilizing frequency division multiplexing
11/14/2002WO2001005069A3 Optical free space signalling system
11/14/2002US20020168950 Polar loop transmitter
11/14/2002US20020168160 Optical transmission line, and optical fiber and dispersion compensating module employed in the same
11/14/2002US20020168138 Optical module for a parallel dispersion management
11/14/2002US20020168137 Wavelength multiplexing apparatus and signal conversion apparatus
11/14/2002US20020168021 Alternate phase modulation for non-soliton optical rz transmission
11/14/2002US20020167966 Fiber optic synchronous digital hierarchy telecommunication network provided with a protection system shared on the network
11/14/2002US20020167897 Redundant changeover apparatus
11/14/2002US20020167720 Optical amplifier device
11/14/2002US20020167719 Method of pump wavelength combing for enhanced power dynamic range and redundancy broad band raman optical amplifier system
11/14/2002US20020167717 Optical fiber amplifier and optical communication system using the same
11/14/2002US20020167716 Optical amplifier and optical transmission system
11/14/2002US20020167715 Optical fibre emulator
11/14/2002US20020167708 Coherent optical communication receiver of satellite optical communication system
11/14/2002US20020167707 Data regenerator and optical receiver
11/14/2002US20020167705 Multi-value modulation apparatus
11/14/2002US20020167703 Tandem filters for reducing intersymbol interference in optical communications systems
11/14/2002US20020167702 Optical communication system using a high altitude tethered ballon
11/14/2002US20020167701 Optical transmission apparatus employing an illumination light
11/14/2002US20020167698 Polarized-holographic filtering providing improved extinction ratio
11/14/2002US20020167697 Method and apparatus for free-space optical communication without eletro-optical conversion
11/14/2002US20020167694 Split redundant trunk architecture using passive splitters and path switching