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Class Information
Number: 398/159
Name: Optical communications > Transmitter and receiver system > Including compensation > Reducing distortion or dispersion
Description: Subject matter wherein the information error is caused by interference of light waves or by scattering or overlapping taking place in a light beam as it travels.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8712237 Method and apparatus for reducing cost of optical amplification in a network Apr. 29, 2014
8712252 Optical signal output apparatus, electrical signal output apparatus, and test apparatus Apr. 29, 2014
8705977 Equalizer tap correction and reseeding Apr. 22, 2014
8693897 Digital demodulator architecture Apr. 8, 2014
8693898 Adaptive equalizer, optical receiver, and tap coefficient correcting method Apr. 8, 2014
8693886 Optical transmission system Apr. 8, 2014
8693885 Method and system for optimum channel equalization from a SerDes to an optical module Apr. 8, 2014
8687973 Voltage generator, control circuit, vector sum phase shifter, and optical transceiver Apr. 1, 2014
8687974 Skew compensation and tracking in communications systems Apr. 1, 2014
8682174 Optical receiver, optical communication system using the same and equalization method in the optical communication system Mar. 25, 2014
8670675 System and method for distortion compensation including configureable delay Mar. 11, 2014
8660434 Printed circuit board and optical transmission device Feb. 25, 2014
8660437 Minimizing distortion due to wavelength dependent loss in WDM optical networks Feb. 25, 2014
8655193 Optical multi-level transmission system Feb. 18, 2014
8655186 Technique for selectively changing dispersion in optical communication channels Feb. 18, 2014
8655184 Higher order dispersion compensation device Feb. 18, 2014
8649685 Light receiving device and light receiving method Feb. 11, 2014
8639123 Flexible dispersion mapping Jan. 28, 2014
8630545 Multimode optical system Jan. 14, 2014
8625996 Optical transmitter, optical transmission method, and wavelength-selective variable delayer Jan. 7, 2014
8626001 Optical communication card and optical transmission device Jan. 7, 2014
8620160 Optical transmission apparatus Dec. 31, 2013
8615172 Relay station arrangement method and relay station arrangement device Dec. 24, 2013
8615171 Computationally-efficient equalization in polmux OFDM transmission with direct detection via joint transmitter and receiver processing Dec. 24, 2013
8611748 WDM optical transmission system and wavelength dispersion compensation method Dec. 17, 2013
8611762 System and method for frequency-domain chromatic dispersion and polarization mode dispersion compensation with time-domain channel estimation Dec. 17, 2013
8611763 Phase noise compensation in coherent optical communications systems Dec. 17, 2013
8606104 Wavelength selective switch Dec. 10, 2013
8606108 Dispersion slope compensation and dispersion map management systems and methods Dec. 10, 2013
8600243 Polarization mode dispersion compensation Dec. 3, 2013
8599051 Time-interleaved A/D converter apparatus including correction signal part outputting a dispersion compensation control signal Dec. 3, 2013
8594510 Light module, illumination system and method incorporating data in light emitted Nov. 26, 2013
8594515 Digital phase conjugation for fiber-optic links Nov. 26, 2013
8588607 Dispersion scheme for physical layer diagnosis in bi-directional dual-fiber optical networks Nov. 19, 2013
8582983 Method and system for generation of coherent subcarriers Nov. 12, 2013
8582979 Method and arrangement for transmitting an optical OFDM-signal Nov. 12, 2013
8571412 Bi-directional, compact, multi-path and free space channel replicator Oct. 29, 2013
8571414 Optical transmission device, transmission and reception module, optical transmission system, and wavelength dispersion compensation method in optical transmission device Oct. 29, 2013
8565610 Maintaining correlated virtual data streams through a network Oct. 22, 2013
8559820 Optical communication system, optical transmitter, optical receiver and methods, and correlators used therefor Oct. 15, 2013
8543013 Technique for detection of optical data signals Sep. 24, 2013
8543012 Compensating for end-to-end group delay ripples Sep. 24, 2013
8543007 Method and apparatus for broadband mitigation of polarization mode dispersion Sep. 24, 2013
8543005 Intentionally skewed optical clock signal distribution Sep. 24, 2013
8543000 System and method for reducing polarization dependent loss cross-talk effects Sep. 24, 2013
8538264 Dispersion compensating apparatus, dispersion compensating method, optical receiving apparatus, and optical receiving method Sep. 17, 2013
8538263 Optical communication system, optical receiver of same, and optical communication method of same Sep. 17, 2013
8532499 Optical transmitter with adaptively controlled optically linearized modulator Sep. 10, 2013
8526829 System, method and apparatus for clockless PPM optical communications Sep. 3, 2013
8515287 Optical transmission equipment and method for controlling thereof Aug. 20, 2013

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