ClassID:

224582

H04J14/0298 - CPC Classification

Classification description:

Optical multiplex systems; Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]

Recent Application in this class:
#1
20250286619
2025-09-11

FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS

#2
20250192881
2025-06-12

FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS

#3
20250167882
2025-05-22

TIME DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS

#4
20250141585
2025-05-01

COMMUNICATION METHOD AND DEVICE

#5
20250106538
2025-03-27

Hybrid Fiber Coaxial Node

#6
20240421910
2024-12-19

OPTICAL TRANSMITTING APPARATUS, OPTICAL TRANSMITTING METHOD AND OPTICAL TRANSMISSION SYSTEM

#7
20240405910
2024-12-05

WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION APPARATUS

#8
20240356651
2024-10-24

COMMUNICATION SYSTEM EMPLOYING OPTICAL FRAME TEMPLATES

#9
20240297727
2024-09-05

WAVELENGTH MULTIPLEXING DEVICE AND WAVELENGTH MULTIPLEXING METHOD

#10
20240283558
2024-08-22

Subcarrier Based Data Center Network Architecture

#11
20240250770
2024-07-25

OPTICAL TRANSMISSION APPARATUS, SYSTEM, METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

#12
20240250769
2024-07-25

METHOD AND APPARATUS FOR DOWNLINK MULTI-USER WITH DFT-S-OFDM WAVEFORM

#13
20240072905
2024-02-29

Electronic devices with high frequency symbol generation

#14
20240048243
2024-02-08

IMPROVED DATA TRANSMISSION RATES FROM OPTICAL SOURCES

#15
20230388041
2023-11-30

Clock recovery for digital subcarriers for optical networks

#16
20230370165
2023-11-16

OPTICAL LINEWIDTH INDEPENDENT HIGH PURITY MMW/THZ GENERATOR EMPLOYING CASCADED DEMULTIPLEXING

#17
20230353250
2023-11-02

Method and Apparatus for Transmitting and Receiving Client Signal in Optical Transport Network

#18
20230275669
2023-08-31

Optical transmission apparatus, optical reception apparatus, optical communication apparatus, optical communication system, and methods of controlling them

#19
20230269001
2023-08-24

Laser light system with wavelength attenuation

#20
20230254060
2023-08-10

Communication network terminating device, communication system, signal jamming method and signal jamming program

#21
20230135594
2023-05-04

Clock recovery for digital subcarriers for optical networks

#22
20230132851
2023-05-04

Probabilistic Constellation Shaping for Point-To-Multipoint Optical Fiber Communication Systems Employing Subcarriers

#23
20230111987
2023-04-13

Alien wavelength management

#24
20230104053
2023-04-06

OPTICAL TRANSMISSION APPARATUS AND CONTROL METHOD OF OPTICAL TRANSMISSION APPARATUS

#25
20230092560
2023-03-23

Frequency division multiple access optical subcarriers

#26
20230083085
2023-03-16

Hybrid fiber coaxial node

#27
20230061657
2023-03-02

Frequency division multiple access optical subcarriers

#28
20230059239
2023-02-23

SYSTEM AND METHOD FOR PERFORMING HIGH-SPEED COMMUNICATIONS OVER FIBER OPTICAL NETWORKS

#29
20230006757
2023-01-05

System and method for performing high-speed communications over fiber optical networks

#30
20230006737
2023-01-05

Time division multiple access optical subcarriers

#31
20220376812
2022-11-24

Bidirectional optical communications

#32
20220376781
2022-11-24

Frequency division multiple access optical subcarriers

#33
20220376780
2022-11-24

Frequency division multiple access optical subcarriers

#34
20220337322
2022-10-20

Communication system employing optical frame templates

#35
20220263581
2022-08-18

FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS

#36
20220239382
2022-07-28

In-phase to quadrature-phase imbalance in an optical data modulator

#37
20220224419
2022-07-14

Out-of-band communication channel for sub-carrier-based optical communication systems

#38
20220216935
2022-07-07

Subcarrier based data center network architecture

#39
20220200704
2022-06-23

ALL-OPTICAL MULTI-RATE SYSTEMS AND METHODS

#40
20220166534
2022-05-26

Wavelength-division multiplexing optical transmission system, wavelength-division multiplexing optical transmission method, and non-transitory computer readable medium

#41
20220140910
2022-05-05

Optical transmission apparatus, optical reception apparatus, optical communications apparatus, optical communication system, and methods of controlling them

#42
20220123831
2022-04-21

FREQUENCY DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS

#43
20220116119
2022-04-14

Individually routable subcarriers

#44
20220116118
2022-04-14

Individually routable subcarriers

#45
20220103285
2022-03-31

Subchannel encoding device, subchannel decoding device, subchannel encoding method, subchannel decoding method, and subchannel multiplexing optical communication system

#46
20210409145
2021-12-30

Receiving apparatus and decoding method

#47
20210359764
2021-11-18

OPTICAL TRANSMITTER AND OPTICAL RECEIVER

#48
20210119709
2021-04-22

Clock recovery for digital subcarriers for optical networks

#49
20210111827
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#50
20210111826
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#51
20210111825
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#52
20210111807
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#53
20210111806
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#54
20210111805
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#55
20210111804
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#56
20210111788
2021-04-15

Optical subcarrier dual-path protection and restoration for optical communications networks

#57
20210099776
2021-04-01

Hybrid fiber coaxial node

#58
20210099233
2021-04-01

Method and apparatus for transmitting and receiving client signal in optical transport network

#59
20210091876
2021-03-25

Frequency division multiple access optical subcarriers

#60
20210076112
2021-03-11

Dynamically switching queueing schemes for network switches

#61
20210076110
2021-03-11

Dynamically switching queueing schemes for network switches

#62
20210076109
2021-03-11

Dynamically switching queueing schemes for network switches

#63
20210075742
2021-03-11

Dynamically switching queueing schemes for network switches

#64
20210075536
2021-03-11

DYNAMICALLY SWITCHING QUEUEING SCHEMES FOR NETWORK SWITCHES

#65
20210044360
2021-02-11

Probabilistic shaping techniques for high performance coherent optical transceivers

#66
20210021348
2021-01-21

Optical transmission apparatus, optical reception apparatus, optical communications apparatus, optical communication system, and methods of controlling them

#67
20200413169
2020-12-31

Frequency division multiple access optical subcarriers

#68
20200413168
2020-12-31

Control plane for an optical network for transmitting multi-carrier data bursts with dynamic adaptation of learning sequence

#69
20200403721
2020-12-24

System and method for performing high-speed communications over fiber optical networks

#70
20200403704
2020-12-24

Frequency division multiple access optical subcarriers

#71
20200403702
2020-12-24

Frequency division multiple access optical subcarriers

#72
20200389234
2020-12-10

Synchronization for subcarrier communication

#73
20200382216
2020-12-03

Frequency division multiple access optical subcarriers

#74
20200366379
2020-11-19

Out-of-band communication channel for sub-carrier-based optical communication systems

#75
20200366378
2020-11-19

Out-of-band communication channel for sub-carrier-based optical communication systems

#76
20200366377
2020-11-19

Out-of-band communication channel for sub-carrier-based optical communication systems

#77
20200366376
2020-11-19

Network architecture for independently routable digital subcarriers for optical communication networks

#78
20200363590
2020-11-19

Out-of-band communication channel for sub-carrier-based optical communication systems

#79
20200358549
2020-11-12

Striping of signal to groups of nodes for flexible service group sizing

#80
20200358531
2020-11-12

Bidirectional optical communications

#81
20200358530
2020-11-12

Bidirectional optical communications

#82
20200351006
2020-11-05

Synchronization for subcarrier communication

#83
20200336285
2020-10-22

Synchronization for subcarrier communication

#84
20200336212
2020-10-22

REDUCING PATTERN EFFECTS FOR PULSE AMPLITUDE MODULATION SIGNALS IN SEMICONDUCTOR OPTICAL AMPLIFIERS

#85
20200313775
2020-10-01

Individually routable digital subcarriers

#86
20200295842
2020-09-17

Impairment compensation techniques for high performance coherent optical transceivers

#87
20200287651
2020-09-10

Time division multiple access optical subcarriers

#88
20200287649
2020-09-10

Code division multiple access optical subcarriers

#89
20200287648
2020-09-10

Code division multiple access optical subcarriers

#90
20200287621
2020-09-10

Time division multiple access optical subcarriers

#91
20200244388
2020-07-30

Subcarrier diversity in optical communication systems

#92
20200244372
2020-07-30

Probabilistic shaping techniques for high performance coherent optical transceivers

#93
20200235814
2020-07-23

Systems and methods for multiband delta sigma digitization

#94
20200177282
2020-06-04

TRANSMISSION OF SUBCARRIERS HAVING DIFFERENT MODULATION FORMATS

#95
20200021386
2020-01-16

Subcarrier based data center network architecture

#96
20200014468
2020-01-09

Optical communications system and optical frequency control method

#97
20190296825
2019-09-26

Multiuser access for optical communications

#98
20190268677
2019-08-29

Hybrid fiber coaxial node

#99
20190245643
2019-08-08

Clock recovery for digital subcarriers for optical networks

#100
20190245627
2019-08-08

Independently routable digital subcarriers with configurable spacing for optical communication networks

#101
20190245626
2019-08-08

Independently routable digital subcarriers for optical communication networks

#102
20190222502
2019-07-18

Network communication methods and apparatus

#103
20190207700
2019-07-04

System and method for performing high-speed communications over fiber optical networks

#104
20190181960
2019-06-13

Individually routable digital subcarriers

#105
20190181957
2019-06-13

Method and apparatus for transmitting and receiving client signal in optical transport network

#106
20190165857
2019-05-30

Method and apparatus for transmitting data in a super channel

#107
20190158209
2019-05-23

WAVELENGTH DEMULTIPLEXER

#108
20190149236
2019-05-16

Systems and methods for multiband delta sigma digitization

#109
20190115994
2019-04-18

Striping of signal to groups of nodes for flexible service group sizing

#110
20190109668
2019-04-11

Optical transmitter and optical transmitting method

#111
20190097749
2019-03-28

Optical transmission apparatus and control method of optical transmission apparatus

#112
20190044619
2019-02-07

Optical receiver, optical transmission system, and reception processing method

#113
20190036637
2019-01-31

Methods and apparatus for multiplexing signals

#114
20180359047
2018-12-13

Reach extension of multi-carrier channels using unequal subcarrier spacing

#115
20180316457
2018-11-01

Methods and apparatus for multiplexing and demultiplexing signals

#116
20180302157
2018-10-18

Dimming control for orthogonal frequency division multiplexing-based visible light communication

#117
20180234285
2018-08-16

Antenna array based OAM wireless communication

#118
20180234236
2018-08-16

Multidimensional coded modulation for wireless communications with physical layer security

#119
20180234139
2018-08-16

Multidimensional coded modulation for wireless communications

#120
20180227071
2018-08-09

Tunable optical channel slicing and stitching to enable dynamic bandwidth allocation

#121
20180199342
2018-07-12

BACKGROUND SCAN WITH DYNAMIC TIME AND FREQUENCY SWITCHING

#122
20180191455
2018-07-05

System and method for passive optical network communication

#123
20180175963
2018-06-21

System and method for performing high-speed communications over fiber optical networks

#124
20180167255
2018-06-14

Digital optical transmitter for digitized narrowcast signals

#125
20180164515
2018-06-14

Multi-channel optical transmitter and methods of making and using the same

#126
20180159626
2018-06-07

Resource allocation via wave-front multiplexing in a PON network

#127
20180123694
2018-05-03

Optical receiver and method of receiving an optical communications signal

#128
20180062743
2018-03-01

Extremely high frequency (EHF) distributed antenna systems, and related components and methods

#129
20180048416
2018-02-15

Method and apparatus for hybrid multiplexing/de-multiplexing in passive optical network

#130
20180034530
2018-02-01

Distributed antenna system for MIMO signals

#131
20170346566
2017-11-30

Resource allocation in PON networks via wave-front multiplexing and de-multiplexing

#132
20170331579
2017-11-16

System and method for performing high-speed communications over fiber optical networks

#133
20170331556
2017-11-16

Mitigating noise and OBI in RFOG networks

#134
20170250775
2017-08-31

OPTICAL MULTIPLEXING DEVICE AND OPTICAL MULTIPLEXING NETWORK SYSTEM

#135
20170250760
2017-08-31

Imaging cancellation in high-speed intensity modulation and direct detection system with dual single sideband modulation

#136
20170250757
2017-08-31

OPTICAL TRANSMITTER, OPTICAL TRANSMISSION DEVICE, AND MAPPING METHOD

#137
20170222716
2017-08-03

Transmission apparatus, transmission system, and transmission control method

#138
20170214485
2017-07-27

Imaging cancellation in high-speed intensity modulation and direct detection system with dual single sideband modulation

#139
20170195756
2017-07-06

Trunk and drop RFOG architecture

#140
20170195061
2017-07-06

Intensity-modulated direct detection with multi-channel multi-beaming

#141
20170170895
2017-06-15

Optical carrier selector system and method

#142
20170163341
2017-06-08

Extremely high frequency (EHF) distributed antenna systems, and related components and methods

#143
20170134115
2017-05-11

Transmission apparatus, reception apparatus and modulation method

#144
20170117967
2017-04-27

Method of equalizing an optical transmission signal

#145
20170111111
2017-04-20

Transceiver and method for monitoring of SCM transmission on fibre cable

#146
20170093519
2017-03-30

Method, apparatus, and device for modulating orthogonal frequency division multiplexing optical signal

#147
20170093498
2017-03-30

Method and apparatus for transmitting and receiving client signal in optical transport network

#148
20170078044
2017-03-16

Optical transmitter, optical communication device, optical communication system, and optical transmission method

#149
20170078027
2017-03-16

Transmission apparatus and transmission system

#150
20170012732
2017-01-12

Methods and apparatus for orbital angular momentum (OAM) system

#151
20160352451
2016-12-01

System and method for passive optical network communication

#152
20160323039
2016-11-03

Transmission of subcarriers having different modulation formats

#153
20160315724
2016-10-27

Signal processing apparatus, signal transmitting apparatus and receiver

#154
20160285582
2016-09-29

Optical add/drop multiplexer and method for adding/dropping optical signal

#155
20160261368
2016-09-08

Optical transmission system, optical transmission apparatus, and optical transmission method

#156
20160248540
2016-08-25

Optical communication that achieves baud rate greater than sample rate

#157
20160211920
2016-07-21

Optical transmission apparatus, optical reception apparatus, optical communication apparatus, optical communication system, and methods of controlling them

#158
20160204899
2016-07-14

Adaptive error correction code for optical super-channels

#159
20160197679
2016-07-07

Device and method for transmitting multicarrier signals

#160
20160191195
2016-06-30

Method and apparatus for superchannel tuning

#161
20160191191
2016-06-30

Reduction of wavelength selective switch (WSS) filter-based impairment using selective subcarrier adjustment

#162
20160191190
2016-06-30

Reduction of wavelength selective switch (WSS) filter-based impairment using differentiated channel baud rates

#163
20160191189
2016-06-30

Wavelength selective switch (WSS) based multiplexing architecture

#164
20160191168
2016-06-30

Intra-transceiver optical superchannel switching via RF sub-band multiplexing technique

#165
20160182180
2016-06-23

Method for base station backhaul, related device and system for base station backhaul

#166
20160149742
2016-05-26

Multi-waveband OFDM receiver, and frequency offset compensation method and system

#167
20160119077
2016-04-28

Dual-channel orthogonal carriers assisted optical signal transmitting device, direct detection method and system

#168
20160112129
2016-04-21

Resource allocation in PON networks via wave-front multiplexing and de-multiplexing

#169
20160112119
2016-04-21

Network unit and method for monitoring a fiber line

#170
20160087750
2016-03-24

METHOD AND APPARATUS FOR TRANSMITTING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNAL IN OPTICAL NETWORK

#171
20160087746
2016-03-24

Transmission system and transmission method

#172
20160087740
2016-03-24

Half-cycled orthogonal frequency divisional multiplexing transmission and reception

#173
20160080085
2016-03-17

Extremely high frequency (EHF) distributed antenna systems, and related components and methods

#174
20160080083
2016-03-17

Mitigating noise and OBI in RFoG networks

#175
20160065293
2016-03-03

Distributed antenna system for MIMO signals

#176
20160043852
2016-02-11

Hitless multi-carrier spectrum migration method and apparatus

#177
20150365170
2015-12-17

System for implementing a radio over fiber transmission in a passive optical network

#178
20150333827
2015-11-19

Optical multiplexing device and method of generating optical OFDM signal

#179
20150319028
2015-11-05

Preamble design and detection for ranging in an optical OFDMA communication network

#180
20150318931
2015-11-05

Pre-distortion of an optical signal with frequency division multiplexed sub-carriers

#181
20150249502
2015-09-03

Providing digital data services in optical fiber-based distributed radio frequency (RF) communications systems, and related components and methods

#182
20150215688
2015-07-30

Routing for super channel for bandwidth variable wavelength switched optical network

#183
20150200790
2015-07-16

Method, system and apparatus for efficient multilayer optical networking

#184
20150180605
2015-06-25

Method for the adaptive configuration of the transmission spectrum in WDM-PONs

#185
20150139650
2015-05-21

Method and apparatus for transmitting and receiving client signal in optical transport network

#186
20150131999
2015-05-14

Transceiver for use in fibre network

#187
20150124583
2015-05-07

Network communication methods and apparatus

#188
20150104182
2015-04-16

Transmission apparatus, transmission system, and transmission method

#189
20150086204
2015-03-26

Frequency-diversity MIMO processing for optical transmission

#190
20150023667
2015-01-22

System and method for coherent detection with digital signal procession

#191
20150023444
2015-01-22

Distributed antenna system for MIMO signals

#192
20150016827
2015-01-15

High-speed low-jitter communication system

#193
20150003838
2015-01-01

Data processing of an optical network element

#194
20140369677
2014-12-18

Optical transmitter and optical transmission method

#195
20140363160
2014-12-11

Flexible interconnection of scalable systems integrated using optical networks for datacenters

#196
20140348511
2014-11-27

Mitigating noise and OBI in RFoG networks

#197
20140314415
2014-10-23

Crosstalk reduction in optical networks using variable subcarrier spectral allocation

#198
20140314411
2014-10-23

Optical nyquist superchannel generation using microwave low-pass filtering and optical equalization

#199
20140314410
2014-10-23

System for transmission over a multi-mode and/or multi-core optical fiber

#200
20140294393
2014-10-02

Optical OFDM transmission

#201
20140269784
2014-09-18

Relay device and optical network system

#202
20140255032
2014-09-11

Optical network unit

#203
20140248055
2014-09-04

Method and apparatus for using direct wireless links and a central controller for dynamic resource allocation

#204
20140241727
2014-08-28

COMMUNICATION BETWEEN TRANSCEIVERS USING IN-BAND SUBCARRIER TONES

#205
20140233955
2014-08-21

Passive optical network system

#206
20140212140
2014-07-31

Method and apparatus for generation of frequency- and phase-locked subcarrier

#207
20140205297
2014-07-24

Method, system, and apparatus for transmitting data information by using optical signals

#208
20140205286
2014-07-24

Multi-direction variable optical transceiver

#209
20140193154
2014-07-10

SUBCHANNEL SECURITY AT THE OPTICAL LAYER

#210
20140153925
2014-06-05

Transmission control device, transmission system, and transmission method

#211
20140133860
2014-05-15

Individual information in lower and upper optical sidebands

#212
20140126910
2014-05-08

System and method for passive optical network communication

#213
20140105263
2014-04-17

Systems and method for orthogonal frequency divisional multiplexing

#214
20140099115
2014-04-10

Transmitting apparatus, receiving apparatus, optical frequency division multiplex transmission system, and optical signal communication method

#215
20140099111
2014-04-10

PON system and subcarrier assigning method

#216
20140092924
2014-04-03

Channel carrying multiple digital subcarriers

#217
20140072303
2014-03-13

Ultra dense WDM with agile and flexible DSP add-drop

#218
20140064304
2014-03-06

System and method for distributing optical signals

#219
20140050480
2014-02-20

System and method for mitigating four-wave-mixing effects

#220
20140050478
2014-02-20

Switching and routing protocol for a fiber optic transmission system

#221
20140006956
2014-01-02

Digital link viewer

#222
20130330085
2013-12-12

Light device, communication unit and positional information management system

#223
20130315597
2013-11-28

Photonic compressive sensing receiver

#224
20130272710
2013-10-17

Defragmentation of optical networks

#225
20130272709
2013-10-17

Optical frequency-division multiplexer, optical communication system, and optical frequency-division multiplexing method

#226
20130266320
2013-10-10

Optical transmission system using cross phase modulation

#227
20130266305
2013-10-10

Optical-layer multipath protection for optical network

#228
20130223842
2013-08-29

Optical signal transmitting device, optical signal transmitting method, frequency fluctuation suppressing device and frequency fluctuation suppressing system

#229
20130223840
2013-08-29

Resource allocation in PON networks via wave-front multiplexing and de-multiplexing

#230
20130209101
2013-08-15

Digital subcarrier optical network utilizing digital subcarrier cross-connects with increased energy efficiency

#231
20130202303
2013-08-08

High-speed low-jitter communication system

#232
20130202286
2013-08-08

Ethernet Passive Optical Network Over Coaxial (EPOC) Protection Switching

#233
20130198796
2013-08-01

Gateway apparatus and methods for providing content and data delivery in a fiber-based content delivery network

#234
20130195452
2013-08-01

Digital subcarrier cross-connect switching

#235
20130188959
2013-07-25

Providing digital data services in optical fiber-based distributed radio frequency (RF) communication systems, and related components and methods

#236
20130188753
2013-07-25

Distributed antenna system for MIMO signals

#237
20130183040
2013-07-18

System, method and fiber-optic transceiver module for bandwidth efficient distortion-tolerant transmissions for high-bit rate fiber optic communications

#238
20130170834
2013-07-04

Hybrid passive optical network system

#239
20130084072
2013-04-04

OPTICAL RECEPTION APPARATUS AND OPTICAL NETWORK SYSTEM

#240
20130071120
2013-03-21

Digitizer for use in an overlay system with digital optical transmitter for digitized narrowcast signals

#241
20130064545
2013-03-14

Point-to-Multipoint Simultaneous Optical Transmission System

#242
20130058648
2013-03-07

Variable rate optical transmitter based on all-optical OFDM super-channel technology

#243
20130051803
2013-02-28

OPTICAL MULTIPLEXING APPARATUS AND OPTICAL NETWORK SYSTEM

#244
20130011141
2013-01-10

Method and device for inserting/extracting optical subband into multiband optical OFDM signal

#245
20130011139
2013-01-10

Photonic system and method for optical data transmission in medical imaging systems

#246
20130004173
2013-01-03

Overlay system with digital optical transmitter for digitized narrowcast signals

#247
20120328295
2012-12-27

Optical fiber communication system and methods having a reflective optical network unit

#248
20120321320
2012-12-20

Generation and Direct Detection of Orthogonal Band Multiplexing OFDM Signal with Optical Carriers

#249
20120308237
2012-12-06

Mitigating noise and OBI in RFoG networks

#250
20120308236
2012-12-06

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