ClassID:

223934

H04B10/6163 - CPC Classification

Classification description:

Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication; Receivers; Coherent receivers; Details of the electronic signal processing in coherent optical receivers Compensation of non-linear effects in the fiber optic link, e.g. self-phase modulation [SPM], cross-phase modulation [XPM], four wave mixing [FWM]

Recent Application in this class:
#1
20260142729
2026-05-21

SIGNAL TO NOISE AND DISTORTION RATIO (SNDR) ANALYSIS FOR CHARACTERIZATION OF A LINEAR PLUGGABLE OPTICS (LPO) MODULE

#2
20260100764
2026-04-09

SIGNAL PROCESSING CIRCUIT, OPTICAL SIGNAL RECEIVING DEVICE, AND SIGNAL PROCESSING METHOD

#3
20260088909
2026-03-26

SYSTEM, COMMUNICATION APPARATUS, OPTICAL MODULE, METHOD, AND OPTICAL NETWORK

#4
20260074795
2026-03-12

COHERENT OPTICAL TRANSMISSION SYSTEM WITH MULTI-USE LASER EMITTER AND OPTICAL TRANSCEIVER THEREOF

#5
20260019160
2026-01-15

METHOD AND SYSTEM FOR BLIND LEARNING OF VOLTERRA EQUALIZER PARAMETERS

#6
20250279830
2025-09-04

OPTICAL COMMUNICATION SYSTEM FOR PASSIVE OPTICAL NETWORKS AND HIGH DATA RATE COMMUNICATION

#7
20250279829
2025-09-04

BIDIRECTIONAL SYSTEM FOR OPTICAL PROCESSING

#8
20250253947
2025-08-07

METHOD AND SYSTEM FOR BIDIRECTIONAL OPTICAL COMMUNICATION WITH PHASE SHIFTING

#9
20250226884
2025-07-10

OPTICAL TRANSMISSION SYSTEM, OPTICAL RECEIVER, OPTICAL TRANSMITTER, CONTROL METHOD AND PROGRAM

#10
20250211360
2025-06-26

MULTI-CARRIER TRANSMITTER WITH INTEGRATED MULTIPLEXER AND RECEIVER WITH INTEGRATED DEMULTIPLEXER

#11
20250211334
2025-06-26

OPTICAL NETWORK SYSTEM, CONTROL METHOD, AND STORAGE MEDIUM

#12
20250105917
2025-03-27

OPTICAL TRANSMISSION CHARACTERISTIC ESTIMATION APPARATUS, OPTICAL TRANSMISSION CHARACTERISTIC ESTIMATION METHOD AND PROGRAM

#13
20250088283
2025-03-13

METHOD AND DEVICE FOR MONITORING GENERALIZED OPTICAL SIGNAL-TO-NOISE RATIO, COHERENT RECEIVER AND NETWORK APPARATUS

#14
20250038859
2025-01-30

Coherent receiver having low VOA-induced phase changes

#15
20240405870
2024-12-05

Bi-directional optical communication system

#16
20240333397
2024-10-03

METHOD AND SYSTEM FOR FINE FREQUENCY FINESSE FILTERING

#17
20240259109
2024-08-01

Perturbation Based Hard Decision Nonlinearity Compensation

#18
20240187106
2024-06-06

COHERENT DETECTION METHOD, APPARATUS, AND SYSTEM

#19
20240137124
2024-04-25

ALL-OPTICAL PHASE-PRESERVING SIGNAL AMPLITUDE PROCESSORS

#20
20240080124
2024-03-07

Multi-carrier transmitter with integrated multiplexer and receiver with integrated demultiplexer

#21
20240080106
2024-03-07

MULTI-CARRIER TRANSMITTER WITH INTEGRATED MULTIPLEXER AND RECEIVER WITH INTEGRATED DEMULTIPLEXER

#22
20240031026
2024-01-25

Method of equalizing waveform distortion, terminal device, and optical communication system

#23
20230370168
2023-11-16

APPARATUS AND METHOD FOR MEASURING NONLINEAR SYSTEM NOISES

#24
20230318709
2023-10-05

Nonlinearity compensation circuit, and optical transceiver

#25
20230299855
2023-09-21

Coherent receiver having low VOA-induced phase changes

#26
20230231630
2023-07-20

Miniaturized multichannel wavelength division multiplexing optical module

#27
20230179307
2023-06-08

Method for nonlinear compensation of coherent high-capacity high-order qam system

#28
20230085546
2023-03-16

PERTURBATIVE-BASED NONLINEAR COMPENSATION FOR DIGITAL SUBCARRIER SYSTEMS

#29
20230084166
2023-03-16

Laser communication apparatus and associated methods

#30
20230072299
2023-03-09

Device and method for decoding and equalizing

#31
20230008430
2023-01-12

METHOD FOR UPDATING NON-LINEAR LOOK-UP TABLE, APPARATUS FOR UPDATING NON-LINEAR LOOK-UP TABLE, AND OPTICAL RECEIVER

#32
20220385374
2022-12-01

Communication system, receiver, equalization signal processing circuit, method, and non-transitory computer readable medium

#33
20220385373
2022-12-01

WAVELENGTH CONVERTER, OPTICAL COMMUNICATION APPARATUS, AND OPTICAL WAVEGUIDE SUBSTRATE

#34
20220286210
2022-09-08

Apparatus and method for shifting a frequency of an optical signal

#35
20220271845
2022-08-25

Optical wireless apparatus and method for creating information memories

#36
20220216923
2022-07-07

Optical transmission system and compensation method

#37
20220190925
2022-06-16

Optical transfer system, optical transmitter, and optical communication method

#38
20220166520
2022-05-26

Performance estimation apparatus and method for nonlinear communication system and an electronic device

#39
20220140904
2022-05-05

Compensation of signal distoration induced by a periodic optical copropagating optical signal

#40
20220131619
2022-04-28

Optical receiving apparatus and coefficient optimization method

#41
20210336705
2021-10-28

Highly robust underwater optical communication system

#42
20210273732
2021-09-02

Phase variation compensation device, phase variation compensation method and communication device

#43
20210126714
2021-04-29

Backward propagation with compensation of some nonlinear effects of polarization mode dispersion

#44
20210050919
2021-02-18

Nonlinearity cancellation in fiber optic transmission based on frequency-mutually-referenced carriers

#45
20200366380
2020-11-19

Method and apparatus for nonlinear compensation in coherent optical links

#46
20200328811
2020-10-15

Digital nonlinear phase compensator for legacy submarine cables

#47
20200112376
2020-04-09

Monitoring performance of optical network using low-power gaps and a pilot tone

#48
20190393965
2019-12-26

Optical fiber nonlinearity compensation using neural networks

#49
20190296832
2019-09-26

System and method for adaptive channel equalization in a time varying channel

#50
20190190617
2019-06-20

Clock recovery circuits, systems and implementation for increased optical channel density

#51
20190149393
2019-05-16

Nonlinearity pre-compensation of high order modulation transmissions

#52
20190132051
2019-05-02

Optical transmission distortion compensation device, optical transmission distortion compensation method, and communication device

#53
20190081726
2019-03-14

Processing parameter and resource sharing architecture for superchannel based transmission systems

#54
20190028200
2019-01-24

System and method for the transmission of optical signals

#55
20180367219
2018-12-20

Backward propagation with compensation of some nonlinear effects of polarization mode dispersion

#56
20180337641
2018-11-22

Reduction of second-order non-linear distortion in a wideband communication system

#57
20180316433
2018-11-01

Methods and Systems for Fiber Optic Communication

#58
20180287712
2018-10-04

Optical communication with some compensation of nonlinear distortions

#59
20180234184
2018-08-16

Monitor device and monitor method for monitoring transmission line

#60
20180227056
2018-08-09

Receiving device and receiving method

#61
20170324481
2017-11-09

Method of controlling the generation of a coherent optical signal and coherent optical signal control apparatus

#62
20170257172
2017-09-07

High capacity transmission system with full nonlinear penalty cancellation

#63
20170237498
2017-08-17

Optical communication with some compensation of nonlinear optical effects

#64
20170180055
2017-06-22

Techniques for receiving DFT spreading modulation signals

#65
20170041078
2017-02-09

METHOD OF NON-LINEARITY COMPENSATION IN OPTICAL FIBRE COMMUNICATIONS

#66
20170012704
2017-01-12

Mitigation of narrow-band degradations in a broadband communication system

#67
20160301549
2016-10-13

Data rate programming using source degenerated CTLE

#68
20160294480
2016-10-06

System and method for determining nonlinear mitigation perturbative distortion coefficients using a received optical signal

#69
20160269108
2016-09-15

Method and device for estimation of chromatic dispersion in optical coherent communication

#70
20160233963
2016-08-11

Reduced complexity nonlinear compensation

#71
20160226582
2016-08-04

Estimating device and method for estimating

#72
20160211917
2016-07-21

Methods and systems for reducing noise in optoelectronic oscillators

#73
20160127047
2016-05-05

Method, device and communication system for reducing optical transmission impairments

#74
20160065312
2016-03-03

Optical transmission device, nonlinear distortion compensation method, and nonlinear distortion pre-equalization method

#75
20160056889
2016-02-25

Optical spatial-division multiplexed transmission system and transmission method

#76
20160050025
2016-02-18

Signal processing device, optical communication system, and signal processing method

#77
20160036554
2016-02-04

Signal processing device and signal processing method for optical polarization multiplexed signal

#78
20160036528
2016-02-04

Calculating apparatus and method for nonlinear weighting coefficient

#79
20150372765
2015-12-24

Signal processing device and signal processing method

#80
20150333837
2015-11-19

Tracking nonlinear cross-phase modulation noise and linewidth induced jitter in coherent optical fiber communication links

#81
20150295643
2015-10-15

Estimation apparatus and method for nonlinear distortion and receiver

#82
20150288458
2015-10-08

Digital coherent receiver and receiving method of optical signal

#83
20150222369
2015-08-06

Electro-optical implementation of an optical spectrum inverter

#84
20150104197
2015-04-16

Optimal signal constellation design for ultra-high-speed optical transport in the presence of phase noise

#85
20150071656
2015-03-12

Optical transmitter, optical receiver, method of compensating non-linear distortion, and communication apparatus

#86
20150071652
2015-03-12

Methods and systems for reduced complexity nonlinear compensation

#87
20150071630
2015-03-12

Non-linear distortion compensator, method of compensating non-linear distortion, and optical receiver

#88
20140226971
2014-08-14

System and method for compensating signal degradation in dual polarization optical systems

#89
20140199076
2014-07-17

Digital non-linear compensation in optical communication systems

#90
20140099128
2014-04-10

Inter-band cross-phase modulation compensation for the mitigation of intra-channel nonlinear impairments in optical fiber transmission

#91
20140093255
2014-04-03

Optical signal compensation device

#92
20140037291
2014-02-06

Butterfly filter coefficient setting method and device, receiver and receiving method

#93
20130315607
2013-11-28

Low cost direct modulation and coherent detection optical OFDM

#94
20130216240
2013-08-22

COHERENT LIGHT RECEIVING DEVICE, SYSTEM, AND METHOD

#95
20120301146
2012-11-29

Equivalent-Link Backward Propagation Method for Nonlinearity Compensation in Fiber Transmission Systems

#96
20120263464
2012-10-18

Adaptive cross-polarization modulation cancellers for coherent optical communication systems

#97
20120051742
2012-03-01

Apparatus for self-phase modulation noise calculation, apparatus for self-phase modulation noise elimination and optical coherent receiver

#98
20120014692
2012-01-19

System and method for cross-phase modulation noise reduced transmission in hybrid networks

#99
20110286741
2011-11-24

Apparatus and method for monitoring statistical characteristics of phase noises, and coherent optical communication receiver

#100
20110249971
2011-10-13

Polarization fluctuation compensation device and optical communication system

#101
20100247099
2010-09-30

Non-linearity compensation in an optical transmission

#102
20100135656
2010-06-03

OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATIONS WITH NONLINEARITY COMPENSATION

#103
20100028011
2010-02-04

Digital clock and data recovery scheme

#104
20100021179
2010-01-28

Optical field receiver and optical transmission system

#105
20090324224
2009-12-31

System, method and apparatus to suppress inter-channel nonlinearities in WDM systems with coherent detection

#106
20090190929
2009-07-30

Optical orthogonal frequency division multiplexed communications with nonlinearity compensation

#107
20090190926
2009-07-30

Combined phase and polarization modulation for optical communication

#108
16553142
2020-08-25

Digital fiber nonlinearity compensation

#109
15795676
2019-03-26

Clock recovery circuits, systems and implementation for increased optical channel density

#110
15585806
2020-05-05

Laser-based detection of acoustic signals in turbulent fluids

#111
14880974
2017-03-07

Equalization scheme in trans-impedance amplifier for optical communications