ClassID:

223840

H04B10/2543 - 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; Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to fibre non-linearities, e.g. Kerr effect

Sub-classes:
Recent Application in this class:
#1
20260074790
2026-03-12

EVENT TIMING-BASED METHOD AND APPARATUS FOR FIBER-OPTIC FREQUENCY TRANSFER

#2
20250358009
2025-11-20

METHOD AND SYSTEM FOR MONITORING NON-LINEAR EFFECTS ALONG AN OPTICAL COMMUNICATION LINE

#3
20250226884
2025-07-10

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

#4
20250132834
2025-04-24

TRANSMISSION PATH MONITORING APPARATUS AND TRANSMISSION PATH MONITORING METHOD

#5
20250132829
2025-04-24

OPTICAL POWER CONTROL DEVICE, OPTICAL POWER CONTROL METHOD, AND OPTICAL TRANSMISSION SYSTEM

#6
20250105917
2025-03-27

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

#7
20250088283
2025-03-13

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

#8
20250080224
2025-03-06

Management and control system of wavelength-multiplexed subranging electro-optic modulator (SEOM)s for high dynamic range applications

#9
20240171277
2024-05-23

OPTIMAL EQUALIZATION PARTITIONING WITH AUTOMATIC GAIN ADJUSTMENT

#10
20240137124
2024-04-25

ALL-OPTICAL PHASE-PRESERVING SIGNAL AMPLITUDE PROCESSORS

#11
20240113783
2024-04-04

Linearization of electro-optic links

#12
20240097791
2024-03-21

SYMBOL CONSTELLATION GENERATION APPARATUS, CONTROL METHOD, AND COMPUTER-READABLE STORAGE MEDIUM

#13
20240031026
2024-01-25

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

#14
20230370163
2023-11-16

SIGNAL GENERATION APPARATUS AND METHOD

#15
20230318709
2023-10-05

Nonlinearity compensation circuit, and optical transceiver

#16
20230254041
2023-08-10

Per-span optical fiber nonlinearity compensation using integrated photonic computing

#17
20230224041
2023-07-13

SIGNAL PROCESSING METHOD AND DEVICE, STORAGE MEDIUM, AND ELECTRONIC DEVICE

#18
20230067131
2023-03-02

Transition-based, nonlinear equalization for optical transmission

#19
20230031180
2023-02-02

System and method for interference cancellation in optical transmission

#20
20230006741
2023-01-05

Radio over fiber system and nonlinear compensation method

#21
20220416890
2022-12-29

Optical transmitting apparatus and transmission characteristics estimation method

#22
20220407601
2022-12-22

Optimal equalization partitioning

#23
20220140904
2022-05-05

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

#24
20210359783
2021-11-18

Increase in reach of unrepeatered fiber transmission

#25
20210256347
2021-08-19

LOW COMPLEXITY FIBER NONLINEARITY COMPENSATION USING LOOKUP TABLE

#26
20210218472
2021-07-15

Optimal equalization partitioning

#27
20210184768
2021-06-17

Interference suppression with mitigation of intermodulation distortion

#28
20210126714
2021-04-29

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

#29
20210050919
2021-02-18

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

#30
20200412452
2020-12-31

Interference suppression with mitigation of intermodulation distortion

#31
20200412451
2020-12-31

Bidirectional optical communication and sensing WDM architecture using same fiber transmission band

#32
20200412448
2020-12-31

Measuring linear and non-linear transmission perturbations in optical transmission systems

#33
20200403712
2020-12-24

Optical mitigation of inter-channel crosstalk for WDM channels

#34
20200358533
2020-11-12

Optical system and method for seeding an optical transmitter

#35
20200304211
2020-09-24

Dimensional transformation in optical communication

#36
20200274616
2020-08-27

Frequency chirp correction method for photonic time-stretch system

#37
20200153190
2020-05-14

Avoiding mode instability in an optical amplifier fiber

#38
20200119833
2020-04-16

Increase in reach of unrepeatered fiber transmission

#39
20200036468
2020-01-30

Adjustment of control parameters of section of optical fiber network

#40
20200007234
2020-01-02

Bidirectional optical communication and sensing WDM architecture using same fiber transmission band

#41
20190393965
2019-12-26

Optical fiber nonlinearity compensation using neural networks

#42
20190215073
2019-07-11

Systems and methods of analyzing an optical transport network

#43
20190190648
2019-06-20

Systems and methods for error-free reconstruction of transmitted symbols in a coherent receiver

#44
20190097723
2019-03-28

Multimode optical fiber communication device comprising a component for modal dispersion compensation

#45
20190028200
2019-01-24

System and method for the transmission of optical signals

#46
20190013866
2019-01-10

Optical transmission device and optical transmission method

#47
20180367219
2018-12-20

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

#48
20180316437
2018-11-01

Optical module and optical transceiver

#49
20180316433
2018-11-01

Methods and Systems for Fiber Optic Communication

#50
20180269979
2018-09-20

Constellation optimization based on generalized mutual information over a nonlinear optical channel

#51
20180234184
2018-08-16

Monitor device and monitor method for monitoring transmission line

#52
20180227056
2018-08-09

Receiving device and receiving method

#53
20180205462
2018-07-19

System and method for processing an electromagnetic signal

#54
20180183521
2018-06-28

Optical pulse amplitude modulation transmission using digital pre-compensation

#55
20180167157
2018-06-14

Multi-channel optical cross-phase modulation compensator

#56
20180138984
2018-05-17

Data transmission and receiving methods based on orthogonal frequency division multiplexing technology, and apparatus

#57
20180131439
2018-05-10

METHODS AND SYSTEMS FOR REDUCING OPTICAL BEAT INTERFERENCE VIA POLARIZATION DIVERSITY IN FTTX NETWORKS

#58
20170272163
2017-09-21

COMPENSATION OF NONLINEAR IMPAIRMENT IN FIBER OPTIC LINKS BY INCLUDING DISTRIBUTED VARIATIONS OF WAVEGUIDE DISPERSIVE PROPERTIES

#59
20170254957
2017-09-07

Polarization dispersion adder and optical receiver

#60
20170244481
2017-08-24

METHOD FOR PRODUCING A QUALITY OF TRANSMISSION ESTIMATOR FOR OPTICAL TRANSMISSIONS

#61
20170237498
2017-08-17

Optical communication with some compensation of nonlinear optical effects

#62
20170093493
2017-03-30

CORRECTION OF CHROMATIC DISPERSION IN REMOTE DISTRIBUTED SENSING

#63
20170041078
2017-02-09

METHOD OF NON-LINEARITY COMPENSATION IN OPTICAL FIBRE COMMUNICATIONS

#64
20170041067
2017-02-09

Optical transmission method and optical transmission system

#65
20170019178
2017-01-19

NONLINEARITY CANCELLATION IN FIBER OPTIC TRANSMISSION BASED ON FREQUENCY-MUTUALLY-REFERENCED CARRIERS

#66
20160380700
2016-12-29

Method for eliminating nonlinear effects, transmitter and receiver

#67
20160316283
2016-10-27

Nonlinear penalty estimation using spectral inversion in optical transport networks

#68
20160261344
2016-09-08

Mitigation of multi-path interference from quasi-single-mode fiber using hybrid span configuration and digital signal processing

#69
20160233963
2016-08-11

Reduced complexity nonlinear compensation

#70
20160211917
2016-07-21

Methods and systems for reducing noise in optoelectronic oscillators

#71
20160197680
2016-07-07

Nonlinear compensation method and apparatus and system in multicarrier optical communication system

#72
20160164544
2016-06-09

Adaptation of forward error correction code and/or modulation

#73
20160127047
2016-05-05

Method, device and communication system for reducing optical transmission impairments

#74
20160112065
2016-04-21

Method for implementing turbo equalization compensation, turbo equalizer and system

#75
20160091660
2016-03-31

Quasi-single-mode optical fiber with a large effective area

#76
20160065324
2016-03-03

All-optical regeneration system for optical wavelength division multiplexed communication systems

#77
20160065312
2016-03-03

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

#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
20150341116
2015-11-26

Communication system for a nonlinear fiber channel

#81
20150304035
2015-10-22

Method of optimizing optical signal quality in an optical communications link, optical network element and optical communications link

#82
20150295649
2015-10-15

METHOD AND SYSTEM FOR PERFORMING FIBER NONLINEARITY COMPENSATION FOR OPTICAL 16QAM

#83
20150288451
2015-10-08

Methods and systems for reducing optical beat interference via polarization diversity in FTTx networks

#84
20150117853
2015-04-30

Method and apparatus for calculating nonlinear transmission impairment of optical fiber link

#85
20150104181
2015-04-16

System and method using spectral shaping and expanded channel spacing

#86
20150071656
2015-03-12

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

#87
20150071652
2015-03-12

Methods and systems for reduced complexity nonlinear compensation

#88
20150071630
2015-03-12

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

#89
20150043925
2015-02-12

Light transmission apparatus, light communication system, light reception apparatus, method for adjusting light transmission, method for transmitting light, and method for receiving light

#90
20140199076
2014-07-17

Digital non-linear compensation in optical communication systems

#91
20140099127
2014-04-10

Optical phase conjugation aided long-haul transmission system with enhanced signal-to-noise ratio and nonlinear tolerance

#92
20140093255
2014-04-03

Optical signal compensation device

#93
20140079392
2014-03-20

Multi-mode optical transmission line with differential modal group delay compensation

#94
20130343766
2013-12-26

Optical communication system and method

#95
20130308947
2013-11-21

Method of optical data transmission using polarization division multiplexing

#96
20130243433
2013-09-19

Inverse channel apparatus and transmitter, receiver and system containing the apparatus

#97
20130216238
2013-08-22

Nonlinear compensating apparatus and method and transmitter

#98
20130195459
2013-08-01

Method and apparatus for fiber non-linearity mitigation

#99
20130188948
2013-07-25

Nonlinear estimating apparatus and method and receiver

#100
20130108260
2013-05-02

Method and apparatus for adaptive nonlinear equalization in a polarization multiplexing optical communication system

#101
20130094851
2013-04-18

Optical spectral shaping for nonlinearity enhancement in high speed digital coherent optical transmissions

#102
20130077979
2013-03-28

Nonlinear compensating apparatus and method and transmitter

#103
20130077963
2013-03-28

Method for the compensation of nonlinear impairments in dispersion-managed optical fiber links using phase conjugation and equivalent optical link

#104
20120263481
2012-10-18

Nonlinear compensation using an enhanced backpropagation method with subbanding

#105
20120224855
2012-09-06

Digital phase conjugation for fiber-optic links

#106
20120219303
2012-08-30

Efficient computation and compensation of linear and nonlinear distortion in dispersion-managed fiber-opic transmission

#107
20120177386
2012-07-12

Electronic phase conjugation for impairment compensation in a fiber communication system

#108
20120163816
2012-06-28

Passive optical network with sub-octave transmission

#109
20120082468
2012-04-05

Look-up table and digital transmitter based architecture for fiber nonlinearity compensation

#110
20120081780
2012-04-05

Look-up table and digital transmitter based architecture for fiber nonlinearity compensation

#111
20120076235
2012-03-29

Nonlinear compensating apparatus and transmitter

#112
20120027412
2012-02-02

Electronic compensation of nonlinearity in optical communication

#113
20120014470
2012-01-19

QUADRATURE MODULATOR WITH FEEDBACK CONTROL AND OPTICAL COMMUNICATIONS SYSTEM USING THE SAME

#114
20110255879
2011-10-20

Electronic nonlinearity compensation for optical transmission systems

#115
20100247099
2010-09-30

Non-linearity compensation in an optical transmission

#116
20100074630
2010-03-25

SYSTEM AND METHOD FOR SHAPING A WAVEFORM

#117
20100054660
2010-03-04

Remote larger effective area optical fiber

#118
20090324246
2009-12-31

Method of Limiting the Non-Linear Phase Noise of a Phase-Modulated Optical Signal of Constant Amplitude, and an Associated Device

#119
20090129778
2009-05-21

Raman cancellation and management in CATV transport and distribution via RF spectrum inversion

#120
20090016740
2009-01-15

Method and apparatus for compensating for fiber nonlinearity in a transmission system

#121
20080247756
2008-10-09

Method and apparatus for transmitting multiple channels in a wavelength division multiplexed (WDM) optical communication system with reduced raman crosstalk and nonlinear distortions

#122
20080175600
2008-07-24

Method and apparatus for pulse generation and adaptive pulse generation for optical communications

#123
20070166032
2007-07-19

Methods and systems for the performance analysis of fiber optic networks

#124
20070140705
2007-06-21

Method and apparatus for pulse generation and adaptive pulse generation for optical communications

#125
20070133918
2007-06-14

Quadrature modulator with feedback control and optical communications system using the same

#126
20060285856
2006-12-21

Optical transmission system using in-line amplifiers

#127
20060245765
2006-11-02

Methods of spread-pulse modulation and nonlinear time domain equalization for fiber optic communication channels

#128
20060245758
2006-11-02

Systems with spread-pulse modulation and nonlinear time domain equalization for fiber optic communication channels

#129
20060245757
2006-11-02

Apparatus with spread-pulse modulation and nonlinear time domain equalization for fiber optic communication channels

#130
20060039656
2006-02-23

Communications system employing single-mode lasers and multimode optical fibers

#131
20060002714
2006-01-05

Method and apparatus for optical signal transmission

#132
20050271387
2005-12-08

Spectral shaping for optical OFDM transmission

#133
20050175339
2005-08-11

Dynamic broadband optical equalizer

#134
20050089326
2005-04-28

Cancellation of transmitted signal crosstalk in optical receivers of diplexer-based fiber optic transceivers

#135
18680843
2024-11-05

Enhanced subranging electro-optic modulator (SEOM) for high dynamic range applications

#136
18585565
2025-01-21

Wavelength-multiplexed subranging electro-optic modulator (SEOM) for high dynamic range applications

#137
18238801
2024-02-27

Wavelength-multiplexed subranging electro-optic modulator (SEOM) for high dynamic range applications

#138
16003736
2019-08-20

Dimensional transformation

#139
15849940
2019-03-19

Fiber parameter identification

#140
13602282
2016-01-12

Apparatus for dual-polarization QAM and optical communications system using the same cross-reference to related application