ClassID:

223806

H04B10/0799 - 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 for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal Monitoring line transmitter or line receiver equipment

Recent Application in this class:
#1
20250279830
2025-09-04

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

#2
20250279829
2025-09-04

BIDIRECTIONAL SYSTEM FOR OPTICAL PROCESSING

#3
20250253947
2025-08-07

METHOD AND SYSTEM FOR BIDIRECTIONAL OPTICAL COMMUNICATION WITH PHASE SHIFTING

#4
20250211329
2025-06-26

APPARATUS AND METHOD FOR REAL-TIME MONITORING DELAY SKEW OF SUBSIGNAL OF OPTICAL TRANSMITTER

#5
20250141547
2025-05-01

OPTICAL TRANSMISSION LINE MONITORING DEVICE AND OPTICAL TRANSMISSION LINE MONITORING METHOD

#6
20250117711
2025-04-10

Network system modeling using nested models combining machine learning and behavioral approaches

#7
20250070867
2025-02-27

STORAGE DEVICE AND METHOD FOR CONTROLLING THE STORAGE DEVICE

#8
20240421901
2024-12-19

METHOD AND APPARATUS FOR DETECTING PHASE DIFFERENCE AND DELAY OF COHERENT RECEIVER, AND STORAGE MEDIUM

#9
20240405870
2024-12-05

Bi-directional optical communication system

#10
20240259096
2024-08-01

Optimization of spectrum sharing in optical line systems

#11
20240235674
2024-07-11

OPTICAL TRANSMISSION CONTROL DEVICE, OPTICAL TRANSMISSION CONTROL METHOD, AND OPTICAL TRANSMISSION CONTROL PROGRAM

#12
20230291473
2023-09-14

PARALLEL RECEIVER MODULE

#13
20230283395
2023-09-07

OPTICAL RECEPTION APPARATUS AND MONITOR SIGNAL GENERATING METHOD

#14
20230254041
2023-08-10

Per-span optical fiber nonlinearity compensation using integrated photonic computing

#15
20230075025
2023-03-09

Optical signal processing method, control unit, optical transmission unit and storage medium

#16
20230070907
2023-03-09

Communication apparatus and error detection method

#17
20220407595
2022-12-22

DEVICES, SYSTEMS, AND METHODS FOR PROCESSING OPTICAL COMPONENTS

#18
20220368448
2022-11-17

Optical transmission device, optical transmission system, and optical transmitting power control method

#19
20220261686
2022-08-18

Network system modeling using nested models combining machine learning and behavioral approaches

#20
20220222972
2022-07-14

Conformance testing method and apparatus, and storage medium

#21
20220216934
2022-07-07

Optical reception apparatus and monitor signal generating method

#22
20220190926
2022-06-16

Optical transmitter input resistance measurement and encoder/driver modulation current configuration techniques

#23
20220149937
2022-05-12

Prediction of device properties

#24
20220140913
2022-05-05

Optical receiver evaluation method and optical receiver evaluation apparatus

#25
20220123834
2022-04-21

Framework for handling signal integrity using ASE in optical networks

#26
20220029705
2022-01-27

HIGH-LANE COUNT OPTICAL TRANSCEIVER WITH BUILT-IN SELF TEST

#27
20220006525
2022-01-06

Optical module testing method, apparatus and device, and storage medium

#28
20210399801
2021-12-23

METHOD FOR ANAYLZING OMCI PACKETS

#29
20210376930
2021-12-02

Diagnostic module, monitoring method, and storage medium

#30
20210306073
2021-09-30

Transmission line monitoring device and transmission line monitoring method

#31
20210234617
2021-07-29

Optical transmission system and filter penalty reduction method

#32
20210175968
2021-06-10

System, Method, and Program Product for Characterizing Multilevel PAMn Eye Diagrams in Communication Systems

#33
20210152242
2021-05-20

Fast estimation of chromatic dispersion

#34
20210075518
2021-03-11

Circuit for multiplexing MON pin of receiver optical sub-assembly for optical communication

#35
20210021366
2021-01-21

Optical reception apparatus and monitor signal generating method

#36
20200313771
2020-10-01

OPTICAL TRANSCEIVER AND METHOD FOR MONITORING VARIATION IN POLARIZATION

#37
20200304204
2020-09-24

Framework for handling signal integrity using ASE in optical networks

#38
20200259562
2020-08-13

Optical transmission apparatus and estimation method

#39
20200244368
2020-07-30

LOW-POWER FIBER OPTIC TRANSCEIVER

#40
20200228200
2020-07-16

Methods and apparatus for adaptively detecting signal degradation in an optical communication system using the pre-forward error correction bit error rate

#41
20200213011
2020-07-02

Optical receiver module, optical receiving method, optical line terminal, PON system, and optical filter

#42
20200153534
2020-05-14

Optical reception apparatus and monitor signal generating method

#43
20200145106
2020-05-07

Bi-directional temperature controlled optical transceiver

#44
20200106523
2020-04-02

Fiber nonlinear noise monitoring method and apparatus and optical receiver

#45
20200036568
2020-01-30

Mitigating optical modulator impairment for coherent optical communication systems

#46
20200021362
2020-01-16

Transceiver to transceiver digital optical commands

#47
20200014468
2020-01-09

Optical communications system and optical frequency control method

#48
20190312640
2019-10-10

Optical communication apparatus and frequency control method

#49
20190280768
2019-09-12

METHOD AND DEVICE FOR DETERMINING STATE OF OPTICAL NETWORK TERMINAL LINE

#50
20190253175
2019-08-15

Method for managing a telecommunication network

#51
20190253173
2019-08-15

Optical reception apparatus and monitor signal generating method

#52
20190234831
2019-08-01

Optical line testing device using optical signals having continuous waveform to identify fault location in optical line

#53
20190222308
2019-07-18

Method and apparatus for estimating direct current bias of optical modulator and receiver

#54
20190190158
2019-06-20

Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith

#55
20190158175
2019-05-23

Management system for GPON based services

#56
20190149393
2019-05-16

Nonlinearity pre-compensation of high order modulation transmissions

#57
20180375213
2018-12-27

Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith

#58
20180367220
2018-12-20

Optical transmitter and skew compensation method

#59
20180331762
2018-11-15

Mitigation of electrical-to-optical conversion impairments induced at transmitter

#60
20180316541
2018-11-01

Mitigating optical modulator impairment for coherent optical communication systems

#61
20180309534
2018-10-25

Dynamic equalization of differential path loss in an optical distribution network

#62
20180294879
2018-10-11

TRANSMIT OPTICAL SUB-ASSEMBLY WITH LOCAL FEEDBACK

#63
20180219620
2018-08-02

Optical transceiver compensation, monitoring and alarming

#64
20180212682
2018-07-26

Ring-resonator modulation of an optical signal

#65
20180183514
2018-06-28

Monitoring system using optical line

#66
20180152240
2018-05-31

Shooting long fiber spans with high loss fiber

#67
20180138985
2018-05-17

System and method of de-skewing electrical signals

#68
20180109314
2018-04-19

Management system for GPON based services

#69
20180062749
2018-03-01

Low-power fiber optic transceiver

#70
20180017464
2018-01-18

Optical line testing device using wavelength tunable laser to measure cutting position of optical line

#71
20170373757
2017-12-28

Communication device and inspection method

#72
20170366880
2017-12-21

Photonic transceiver architecture with loopback functionality

#73
20170366266
2017-12-21

Transceiver to transceiver digital optical commands

#74
20170324481
2017-11-09

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

#75
20170257182
2017-09-07

Optical reception apparatus and monitor signal generating method

#76
20170250755
2017-08-31

SEMICONDUCTOR DEVICE

#77
20170170898
2017-06-15

Method for monitoring wavelength of tunable laser on user end by optical line terminal on local end

#78
20170163346
2017-06-08

Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition

#79
20170117960
2017-04-27

Communication Method, Apparatus, and System

#80
20170111113
2017-04-20

Management system for GPON based services

#81
20170047662
2017-02-16

Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith

#82
20170033867
2017-02-02

Optical receiver signal strength indicator (RSSI) circuit having a variable supply voltage filter impedance

#83
20170012701
2017-01-12

Multifunctional laser diode driving circuit, a module comprising the same, and a method using the same

#84
20160352427
2016-12-01

Transmit optical sub-assembly with local feedback

#85
20160344473
2016-11-24

Shooting long fiber spans with high loss fiber

#86
20160308606
2016-10-20

Diagnostic port for inter-switch link testing in electrical, optical and remote loopback modes

#87
20160301520
2016-10-13

System and method of de-skewing electrical signals

#88
20160285657
2016-09-29

Adaptive pre-equalization in optical communications

#89
20160248502
2016-08-25

Noise detection device

#90
20160197409
2016-07-07

Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith

#91
20160191162
2016-06-30

Device for controlling polarization of optical fiber and method of controlling polarization of optical fiber using same

#92
20160191153
2016-06-30

Optical module availability detection method and apparatus

#93
20160187597
2016-06-30

PHOTOELECTRIC CONVERTER, OPTICAL COMMUNICATION SYSTEM AND ITS TEST METHOD

#94
20160173198
2016-06-16

Digital noise loading for optical receivers

#95
20160173197
2016-06-16

METHODS AND APPARATUSES FOR IMPROVED ETHERNET PATH SELECTION USING OPTICAL LEVELS

#96
20160164703
2016-06-09

System and method for backchannel closed loop feedback for channel equalization over Ethernet

#97
20160164624
2016-06-09

Optical reception apparatus and monitor signal generating method

#98
20160156416
2016-06-02

Optical transmitter and bias control method for optical modulator

#99
20160156412
2016-06-02

Transmission apparatus

#100
20160112135
2016-04-21

Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith

#101
20160112123
2016-04-21

Carrier-signal power ratio control in direct detection optical systems

#102
20160094296
2016-03-31

Distortion compensation device and compensation distortion method

#103
20160087723
2016-03-24

Method, apparatus, and communication node for suppressing output noise of PCIe devices in optical fiber communication

#104
20160072609
2016-03-10

Method for detecting wavelength usage conflicts in an optical network

#105
20160065309
2016-03-03

Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition

#106
20160041352
2016-02-11

Optical bench apparatus having integrated monitor photodetectors and method for monitoring optical power using same

#107
20150381276
2015-12-31

Optical transmission system, optical transmission apparatus and wavelength spacing measurement apparatus

#108
20150365164
2015-12-17

Optical transmitting device, fault determining method and fault diagnosis system

#109
20150358108
2015-12-10

Method and apparatus for increasing a transmission performance of a hybrid wavelength division multiplexing system

#110
20150341112
2015-11-26

COMMUNICATION LIGHT DETECTING OPTICAL MODULE AND COMMUNICATION LIGHT DETECTING STRUCTURE

#111
20150341111
2015-11-26

COMMUNICATION LIGHT DETECTOR

#112
20150263805
2015-09-17

Management system for GPON based services

#113
20150222968
2015-08-06

Photonic transceiver architecture with loopback functionality

#114
20150215687
2015-07-30

Wavelength multiplexer, and method and program for identifying failed portion

#115
20150188638
2015-07-02

Optical communication system, method for controlling optical communication, and optical transmitter

#116
20150180571
2015-06-25

Method and device for determining input optical power

#117
20150162989
2015-06-11

Optical transmitter

#118
20150139661
2015-05-21

Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition

#119
20150086193
2015-03-26

FIBER-NONLINEARITY PRE-COMPENSATION PROCESSING FOR AN OPTICAL TRANSMITTER

#120
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

#121
20150037034
2015-02-05

Flexible optimization of the signal-to-noise ratio for ultra dense coherent WDM systems

#122
20140376906
2014-12-25

Direct reference subtraction system for control of optical transmitters

#123
20140328584
2014-11-06

Reducing phase noise associated with optical sources

#124
20140314416
2014-10-23

Crosstalk reduction in optical networks using variable subcarrier power levels

#125
20140308032
2014-10-16

Diagnostic port for inter-switch link testing in electrical, optical and remote loopback modes

#126
20140294380
2014-10-02

OPTICAL DEVICE AND TRANSMITTER

#127
20140270755
2014-09-18

Methods and apparatuses for improved Ethernet path selection using optical levels

#128
20140270750
2014-09-18

Optical source monitoring system

#129
20140233941
2014-08-21

Method for identifying the optical network unit power off reason

#130
20140186032
2014-07-03

Optical bench apparatus having integrated monitor photodetectors and method for monitoring optical power using same

#131
20140161458
2014-06-12

Method and apparatus for increasing a transmission performance of a hybrid wavelength division multiplexing system

#132
20140161439
2014-06-12

Superimposing optical transmission modes

#133
20140133848
2014-05-15

Adaptively coding and modulating signals transmitted via nonlinear channels

#134
20140117200
2014-05-01

Optical communication reception system

#135
20140099105
2014-04-10

Self-characterization tunable optical receiver

#136
20140093233
2014-04-03

Optical link auto-setting

#137
20140023359
2014-01-23

Receiver and failure detection method for receiver

#138
20140003813
2014-01-02

Forward error correction for an optical transport system

#139
20130336650
2013-12-19

Enhanced received signal power indicators for optical receivers and transceivers, and methods of making and using the same

#140
20130322876
2013-12-05

Optical communication reception system

#141
20130308936
2013-11-21

Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition

#142
20130287392
2013-10-31

Circuits and methods for monitoring power parameters in an optical transceiver

#143
20130266307
2013-10-10

Diagnostic port for inter-switch and node link testing in electrical, optical and remote loopback modes

#144
20130177308
2013-07-11

Operational state information generation in an optical transceiver

#145
20130156424
2013-06-20

Apparatus for measuring performance of coherent optical receiver

#146
20130148962
2013-06-13

Methods, apparatuses, and systems for monitoring signal strength in an optical network

#147
20130129360
2013-05-23

Transporting data and auxiliary signals over an optical link

#148
20130129359
2013-05-23

Transporting data and auxiliary signals over an optical link

#149
20130129346
2013-05-23

Transporting data and auxiliary signals over an optical link

#150
20130121688
2013-05-16

Optical transmitter and optical transmission method

#151
20120328285
2012-12-27

Intelligent optical module capable of restarting remotely from host system

#152
20120315034
2012-12-13

Detector And Method Thereof

#153
20120302185
2012-11-29

Transmission apparatus and frequency fluctuation compensation method

#154
20120263465
2012-10-18

Optical transmission system and optical transmission method

#155
20120251100
2012-10-04

Operational status flag generation in an optical transceiver

#156
20120243879
2012-09-27

Communication system, communication device, and communication method

#157
20120223694
2012-09-06

Operating a semiconductor component having a breakthrough voltage

#158
20120170938
2012-07-05

Method and apparatus for local optimization of an optical transmitter

#159
20120155864
2012-06-21

Adaptive power efficient receiver architecture

#160
20120134665
2012-05-31

Testing of transmitters for communication links by software simulation of reference channel and/or reference receiver

#161
20120093504
2012-04-19

Optoelectronic transceiver with multiple flag values for a respective operating condition

#162
20120082464
2012-04-05

COHERENT OPTICAL RECEIVING APPARATUS, COHERENT OPTICAL COMMUNICATIONS SYSTEM EMPLOYING SAME, AND COHERENT OPTICAL COMMUNICATIONS METHOD

#163
20120051738
2012-03-01

Diagnostic port for inter-switch link testing in electrical, optical and remote loopback modes

#164
20120051734
2012-03-01

STATUS MONITOR TRANSPONDER FOR AN OPTICAL NODE OF A NETWORK

#165
20120039618
2012-02-16

Self-adaptive receivers not requiring FEC feedback

#166
20110305461
2011-12-15

Apparatus and a method for modulation of an optical signal

#167
20110249967
2011-10-13

Method and system for adaptively setting a transmitter filter for a high speed serial link transmitter

#168
20110248879
2011-10-13

Method for determining the presence of a transmitter and a receiver in a vehicle and a system designed for carrying out the same

#169
20110220779
2011-09-15

Optical transmission device, laser module, failure detection method for laser module, and failure detection program for laser module

#170
20110182571
2011-07-28

Optical transceiver with clock for providing maintenance and lifetime information

#171
20110087925
2011-04-14

GPON Rogue-ONU detection based on error counts

#172
20110076012
2011-03-31

OPTICAL NETWORK TERMINAL AND METHOD FOR DETECTING TRANSMISSION ERROR IN OPTICAL NETWORK TERMINAL

#173
20100272433
2010-10-28

Method for identifying the optical network unit power off reason

#174
20100215360
2010-08-26

OPTICAL NETWORK UNIT AND ABNORMAL DETECTING & POWER MONITORING METHOD THEREOF

#175
20100209100
2010-08-19

OPTICAL RECEIVER

#176
20100150563
2010-06-17

Wavelength division multiplexing transmission device and wavelength division multiplexing transmission method

#177
20100150546
2010-06-17

Management system for GPON based services

#178
20100067921
2010-03-18

Method and system for controlling driving current of WDM-PON optical transmitter

#179
20100067902
2010-03-18

Optical transmitter error reduction using receiver feedback

#180
20100040377
2010-02-18

Optical sensing module based on pulse width modulation signal and method thereof

#181
20100014854
2010-01-21

Testing an optical network

#182
20100008662
2010-01-14

Method and system for closed loop control of an optical link

#183
20090310961
2009-12-17

Method and apparatus for calibrating burst mode laser transmitters

#184
20090304396
2009-12-10

Optical receiver and method of detecting loss of optical signal of the optical receiver

#185
20090274469
2009-11-05

Polarization multiplexed optical transmitting and receiving apparatus

#186
20090269056
2009-10-29

Bit error rate based system and method for optimizing communication system performance

#187
20090257745
2009-10-15

Method and apparatus for testing transmitters in optical fiber networks

#188
20090226166
2009-09-10

Optoelectronic transceiver with digital diagnostics

#189
20090200450
2009-08-13

Burst light receiving power monitor circuit, method, and program

#190
20090185498
2009-07-23

Small form factor pluggable (SFP) status indicator

#191
20090148156
2009-06-11

Optical transmitting and receiving apparatus and method for analyzing abnormality or failure of the optical transmitting and receiving apparatus

#192
20090104878
2009-04-23

SIGNAL MONITORING DEVICE, COMMUNICATION SYSTEM, SIGNAL MONITORING METHOD, AND RECORDING MEDIUM FOR RECORDING PROGRAM OF SIGNAL MONITORING DEVICE

#193
20090060494
2009-03-05

Light emitter controlling

#194
20090041477
2009-02-12

Attenuation systems and methods for use with an optical detector in an optical communication system

#195
20080281185
2008-11-13

Remote monitoring system and method

#196
20080279566
2008-11-13

Methods and apparatuses for measuring jitter in a transceiver module

#197
20080265185
2008-10-30

Light emitting apparatus and method for inspecting same

#198
20080253761
2008-10-16

Detecting abnormality in an optical receiver

#199
20080247752
2008-10-09

Eye safety in electro-optical transceivers

#200
20080199179
2008-08-21

Transmission system and system startup method

#201
20080089697
2008-04-17

Method and system for grating taps for monitoring a DWDM transmitter array integrated on a PLC platform

#202
20080050116
2008-02-28

Station-side optical network terminal apparatus, subscriber-side optical network terminal apparatus, and optical communication system

#203
20070297468
2007-12-27

Control circuit for optoelectronic module with integrated temperature control

#204
20070237520
2007-10-11

Methods and apparatus for identifying a passive optical network failure

#205
20070196104
2007-08-23

Optical transceiver with clock for providing maintenance and lifetime information

#206
20070143645
2007-06-21

GPON rogue-ONU detection based on error counts

#207
20070140690
2007-06-21

Integrated memory mapped controller circuit for fiber optics transceiver

#208
20070140689
2007-06-21

Method and system for passive optical network diagnostics

#209
20070116460
2007-05-24

Apparatus and method for adaptive adjustment and performance monitoring of avalanche photo-diode optical receiver and laser transmitter for fiber link long haul applications

#210
20070092261
2007-04-26

Bit error rate based system and method for optimizing communication system performance

#211
20070058989
2007-03-15

In-situ power monitor providing an extended range for monitoring input optical power incident on avalanche photodiodes

#212
20070019960
2007-01-25

Light-emitting module

#213
20060291866
2006-12-28

Attenuation and calibration systems and methods for use with a laser detector in an optical communication system

#214
20060269283
2006-11-30

Optical transceiver with function for monitoring operating and ambient conditions

#215
20060263100
2006-11-23

Optical receiver

#216
20060263092
2006-11-23

Optoelectronic transceiver having dual access to onboard diagnostics

#217
20060228121
2006-10-12

Remote monitoring system and method

#218
20060216041
2006-09-28

Optical signal receiver, optical signal monitoring unit, and optical signal monitoring method

#219
20060215545
2006-09-28

Controlling loss of signal thresholds in an optical receiver

#220
20060204246
2006-09-14

Method and apparatus for determining characteristic deterioration in device

#221
20060198635
2006-09-07

Optical network terminal with illegal transmission detection circuitry

#222
20060133805
2006-06-22

Apparatus and method for detecting light source causing optical beat interference in subcarrier multiple access optical network

#223
20060051104
2006-03-09

Receiving error rate control device

#224
20060049338
2006-03-09

Direct attach optical receiver module and method of testing

#225
20050222814
2005-10-06

Control of avalanche photodiodes bias voltage

#226
20050213969
2005-09-29

Light transmission apparatus

#227
20050196171
2005-09-08

Consistency checking over internal information in an optical transceiver

#228
20050196111
2005-09-08

Optical transceiver module with onboard diagnostics accessible via pins

#229
20050169636
2005-08-04

System and method for protecting eye safety during operation of a fiber optic transceiver

#230
20050058455
2005-03-17

Analog to digital signal conditioning in optoelectronic transceivers

#231
20050031357
2005-02-10

Controlling the extinction ratio in optical networks

#232
20050031352
2005-02-10

Optical transceiver and host adapter with memory mapped monitoring circuitry

#233
18217252
2025-12-16

Setup and training of links between host devices and optical modules including menu-based and multi-stage link training

#234
17577488
2022-12-27

Systems and methods for optical filter fault localization

#235
17333557
2021-11-30

Blind estimation of residual chromatic dispersion and carrier frequency offset

#236
17187518
2022-01-11

Optical system and method

#237
16934525
2021-10-19

High-lane count optical transceiver with built-in self test

#238
16421425
2020-05-12

Thermal calibration of a ring modulator

#239
16287409
2020-01-07

Probabilistic constellation shaping for optical networks with diverse transmission media

#240
16177737
2019-10-08

Bi-directional temperature controlled optical transceiver

#241
16057453
2020-11-24

Systems and methods for identifying rogue optical network units in optical networks with wavelength-division multiplexing

#242
15837592
2019-11-05

Systems and methods for identifying a source of node return system degradation

#243
15820725
2019-04-23

Method for testing optical transmitters

#244
15222763
2018-01-23

Systems and methods for identifying a source of node return system degradation

#245
14830963
2017-06-06

Apparatus and method for modulating a laser beam and sensing the optical power thereof

#246
14690362
2018-02-20

Inter-packet interval prediction learning algorithm

#247
13483622
2015-09-01

Quadrature power balance control in optical transmitters