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Class Information
Number: 398/209
Name: Optical communications > Receiver > Including postcompensation > Feedback
Description: Su bject matter in which at least a portion of the received signal is sampled and used to further control the received light beam.

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8712255 Optical receiver and optical transfer apparatus Apr. 29, 2014
8705957 Optical line terminal Apr. 22, 2014
8705984 Optical transmission apparatus and method for controlling variable optical attenuator Apr. 22, 2014
8705985 Fast optical receiver for unencoded data Apr. 22, 2014
8693898 Adaptive equalizer, optical receiver, and tap coefficient correcting method Apr. 8, 2014
8693897 Digital demodulator architecture Apr. 8, 2014
8687982 OSNR measuring device and optical communication system Apr. 1, 2014
8687981 Method and system for split voltage domain transmitter circuits Apr. 1, 2014
8687974 Skew compensation and tracking in communications systems Apr. 1, 2014
8682175 Variable rate transponders for optical communication systems using digital electric filters Mar. 25, 2014
8670678 Digital coherent receiver and digital coherent reception method Mar. 11, 2014
8666251 Electronic dispersion compensation system and method Mar. 4, 2014
8666262 Method for adaptive blind equalization of PSK signal, equalizer and receiver Mar. 4, 2014
8660437 Minimizing distortion due to wavelength dependent loss in WDM optical networks Feb. 25, 2014
8649690 Optical communication reception system Feb. 11, 2014
8649689 Digital coherent receiving apparatus Feb. 11, 2014
8644715 Method and device for monitoring and controlling phase difference based on DQPSK modulation Feb. 4, 2014
8634727 Coherent optical receiver, apparatus and method for detecting interchannel skew in coherent optical receiver Jan. 21, 2014
8626002 Method and system for optoelectronic receivers for uncoded data Jan. 7, 2014
8620166 Holevo capacity achieving joint detection receiver Dec. 31, 2013
8611764 Optical receiver module Dec. 17, 2013
8611763 Phase noise compensation in coherent optical communications systems Dec. 17, 2013
8606119 Optical channel monitor Dec. 10, 2013
8606120 Control of an interferometric optical polarization beam splitter Dec. 10, 2013
8571414 Optical transmission device, transmission and reception module, optical transmission system, and wavelength dispersion compensation method in optical transmission device Oct. 29, 2013
8571423 Receiver algorithms for coherent detection of polarization-multiplexed optical signals Oct. 29, 2013
8565595 Method and apparatus optimizing decision threshold level of optical receiver Oct. 22, 2013
8548337 Coherent optical channel substitution Oct. 1, 2013
8541727 Signal monitoring and control system for an optical navigation sensor Sep. 24, 2013
8538271 Combined burst mode level and clock recovery Sep. 17, 2013
8532500 System and method for receiving optical signals Sep. 10, 2013
8532502 Filter coefficient adjustment apparatus Sep. 10, 2013
8532504 Coherent optical receiver with adaptive equalizer initialization system Sep. 10, 2013
8526831 Receiver algorithms for coherent detection of polarization-multiplexed optical signals Sep. 3, 2013
8515287 Optical transmission equipment and method for controlling thereof Aug. 20, 2013
8503891 Multirate burst mode receiver Aug. 6, 2013
8488961 Dispersion determining apparatus and automatic dispersion compensating system using the same Jul. 16, 2013
8483581 Light receiving circuit and signal processing method Jul. 9, 2013
8472812 Optical communication system, optical communication method and optical communication apparatus Jun. 25, 2013
8472813 Computationally-efficient MIMO equalization algorithm for high-speed, real-time, adaptive polarization multiplexed (POLMUX) OFDM transmission with direct detection Jun. 25, 2013
8463143 Amplifier with offset compensator and optical receiver implemented with the same Jun. 11, 2013
8463142 Method, apparatus, and system for feedback control of coherent receiver Jun. 11, 2013
8463121 Ultra wide-range frequency offset estimation for digital coherent optical receivers Jun. 11, 2013
8463140 Reception device and reception method Jun. 11, 2013
8457504 Adaptive equalization in coherent fiber optic communication Jun. 4, 2013
8452192 Apparatus and method for monitoring statistical characteristics of phase noises, and coherent optical communication receiver May. 28, 2013
8447192 Infrared receiver circuit May. 21, 2013
8442406 Filter, coherent receiver device and coherent receiving method May. 14, 2013
8437643 Compensation of transmission impairments in polarization multiplexed systems May. 7, 2013
8433206 Burst-mode optical receiver and timing control method Apr. 30, 2013

1 2 3 4 5 6 7 8

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