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)
07/2004
07/22/2004US20040141569 Method, apparatus and system for high-speed transmission on fiber optic channel
07/22/2004US20040141561 Ultra-wideband communication through twisted-pair wire media
07/22/2004US20040141535 Optical transmitter
07/22/2004US20040141499 Optical communication network using a code division multiplexing method
07/22/2004US20040141227 On field upgrade of a flat output optical transmission system
07/22/2004US20040141226 Raman amplifier and method for pumping a Raman amplifier
07/22/2004US20040141225 Er-doped superfluorescent fiber source with enhanced mean wavelength stability
07/22/2004US20040141222 Optical phase multi-level modulation method and apparatus, and error control method
07/22/2004US20040141173 Information processing device
07/22/2004US20040141172 System and method for rapidly achieving optimum dispersion in optical transmission systems
07/22/2004US20040140849 Negative feedback amplifier with electrostatic discharge protection circuit
07/22/2004CA2435259A1 Method and apparatus for operating variable optical attenuator by modulating the attenuation thereof
07/21/2004EP1439655A2 Optical communication system and optical amplifier
07/21/2004EP1439654A2 Optical communication system and optical amplifier
07/21/2004EP1439649A1 Data communication system, data transmitter and data receiver
07/21/2004EP1439648A2 Dispersion-managed optical transmission system
07/21/2004EP1439647A2 Method and apparatus for adjusting a filter
07/21/2004EP1439646A2 Technique for power control in optical networks
07/21/2004EP1439645A2 Wavelength-division-multiplexed optical source and passive optical network system employing the same
07/21/2004EP1439644A1 Method and device for injecting a pilot tone into a digital signal
07/21/2004EP1439643A1 Mobile telephone for personal communication
07/21/2004EP1438797A1 Integration of a fiber optic fixed access and a fibre optic radio access network
07/21/2004EP1438796A2 Method and apparatus for enhancing the effective dynamic range of an optical link
07/21/2004EP1438701A1 Method of operating a remote control system and a remote control system comprising an rf transmission and receiving system
07/21/2004EP1066694A4 Mehods and apparatus for reducing four-wave mixing
07/21/2004EP1055298B1 Optical telecommunications network
07/21/2004CN2627539Y Digitalized electromagnetic driving adjustable optical attenuator
07/21/2004CN2627524Y Photoelectric conversion module unit
07/21/2004CN1515090A Optical communication transceriver and method for receiving and transmitting data
07/21/2004CN1514566A Same wave length single fiber biairection sparse interleave multiplex transmission system
07/21/2004CN1514565A City region interleave multiplex system photo monitoring channel
07/21/2004CN1514564A Method of line attenuation self adaptive and path equilibrium automatic adjustment of light interleave multiplexer and its device
07/21/2004CN1514563A Wave length controllable light interleave multiplexer
07/21/2004CN1514262A Dispersion compensating transmission optical fiber matched with orthochromatic dispersion and ortho chromatic dispersion slope unimodel optical fiber and use
07/21/2004CN1158791C Optical fibre channel tester
07/21/2004CN1158756C Optical amplifiers and optical transmission line
07/21/2004CN1158567C Gain flattening system and method with nonlinear sagnac amplifiers
07/21/2004CN1158559C Optical wavelength filter and optical signal separator
07/21/2004CN1158552C Connector-type optical transceiver using SOI optical waveguide
07/20/2004US6766191 System and method for in-vivo hematocrit measurement using impedance and pressure plethysmography
07/20/2004US6766172 Road vehicle communication method using light and radio
07/20/2004US6766116 Optical transmission system
07/20/2004US6766115 Multiport optical component testing using a single optical receiver
07/20/2004US6766113 Control channel processor and switching mechanism
07/20/2004US6766089 Low-dispersion optical fiber and optical transmission system using the low-dispersion optical fiber
07/20/2004US6765942 Optoelectronic circuit and control circuit
07/20/2004US6765919 Method and system for creating and implementing zones within a fibre channel system
07/20/2004US6765730 Dispersion compensator and dispersion compensating system
07/20/2004US6765723 Compensation of polarization-dependent distortion such as PMD
07/20/2004US6765716 Low noise optical amplifier and optical communication system using the same
07/20/2004US6765715 Optical 2R/3R regeneration
07/20/2004US6765714 System and method for measuring an amount of error associated with an optical amplifier
07/20/2004US6765708 Optical duobinary single sideband modulator
07/20/2004US6765682 Method and apparatus for wavelength and power measurement for tunable laser control
07/20/2004US6765670 Spectrometer module and applications thereof
07/20/2004US6765665 Optical bit rate detector
07/20/2004US6765659 Optical supervisory channel apparatus and method for measuring optical properties
07/20/2004US6765189 Small form factor in-line switched multichannel fiber optic power monitoring apparatus
07/20/2004US6763685 Fabrication of multiplexing and demultiplexing single-mode fiber optic couplers
07/20/2004CA2299766C Method and apparatus for determining the optical distance of a threat on an optical fiber
07/15/2004WO2004059918A1 Local area optical network system
07/15/2004WO2004059888A1 Optical control system
07/15/2004WO2004034098A3 Optical transceiver module with multipurpose internal serial bus
07/15/2004WO2004025394A3 Operations method in an ethernet passive optical network that includes a network unit with multiple entities
07/15/2004WO2004005972A3 Electro-optical integrated transmitter chip for arbitrary quadrature modulation of optical signals
07/15/2004WO2003042722A3 All-optical timing jitter measurement system and method
07/15/2004US20040139247 Switch for coupling one bus to another bus
07/15/2004US20040137898 Geospatial lightwave communications system
07/15/2004US20040137839 Distributed multi-drop base station/repeating unit using extension of analog optical transmission in mobile communication system
07/15/2004US20040136731 Method and apparatus for improved high-speed adaptive equalization
07/15/2004US20040136730 Optical transmission system and optical transmitter and optical receiver used therefor
07/15/2004US20040136729 Calibration of laser systems
07/15/2004US20040136728 Optical transmission system
07/15/2004US20040136727 Optical transmission system comprising a supervisory system
07/15/2004US20040136725 Optical communication device
07/15/2004US20040136724 Optical data compression device and method
07/15/2004US20040136723 Optical transceiver port
07/15/2004US20040136722 Calibrating an optical transceiver via adaptive testing
07/15/2004US20040136721 Time division multiplexing of analog signals in an optical transceiver
07/15/2004US20040136720 Task prioritization in firmware controlled optical transceiver
07/15/2004US20040136719 EEPROM emulation in a transceiver
07/15/2004US20040136716 Wavelength-division-multiplexed optical source and passive optical network system employing the same
07/15/2004US20040136709 Microprocessor-based optical signal conditioner
07/15/2004US20040136708 Transceiver configured to store failure analysis information
07/15/2004US20040136649 Self-adapting limiter
07/15/2004US20040136646 All optical decoding systems for decoding optical encoded data symbols across multiple decoding layers
07/15/2004US20040136640 Compact optical delay lines
07/15/2004US20040136639 Optical interconnection circuit between chips, electrooptical device and electronic equipment
07/15/2004US20040136535 Quantum cipher communication system
07/15/2004US20040136422 Laser initialization in firmware controlled optical transceiver
07/15/2004US20040136421 Loss of signal detection and programmable behavior after error detection
07/15/2004US20040136413 Controlling an optical source using a beat frequency
07/15/2004US20040136383 Communication device and transport system
07/15/2004US20040136056 Method and apparatus for sharing pump energy from a single pump arrangement to optical fibers located in different fiber pairs
07/15/2004US20040136054 Method for gain equalization, and device and system for use in carrying out the method
07/15/2004US20040136053 Optical amplifier, passing-wavelength characteristic control method in optical amplifier, and optical transmission system
07/15/2004US20040136052 Stimulated brillouin scattering optical amplifier
07/15/2004US20040135993 Method for measuring the optical signal-to-noise ratios OSNR in a wavelength division multiplex (WDM) transmission system
07/15/2004US20040135172 Variable optical filter and optical transmission system using same, and method of controlling variable optical filter
07/15/2004DE19941678B4 Kommunikationssystem mit Kommunikationsnetz und Informationsempfänger und einzelner Informationsempfänger Communication system with communication networks and information recipients and individual information receiver