H04B10/5055 - CPC Classification Index

#1

20250350366

2025-11-13

LINEARIZED OPTICAL DIGITAL-TO-ANALOG MODULATOR

#2

20240430011

2024-12-26

LINEARIZED OPTICAL DIGITAL-TO-ANALOG MODULATOR

#3

20240283542

2024-08-22

Transmitting device and method for transmitting a broadband optical transmission signal

#4

20240022331

2024-01-18

Phase shifter architecture for large-element-count optical phased arrays

#5

20230403079

2023-12-14

Linearized optical digital-to-analog modulator

#6

20220385372

2022-12-01

Phase shifter architecture for large-element-count optical phased arrays

#7

20220271842

2022-08-25

Linearized optical digital-to-analog modulator

#8

20220231765

2022-07-21

Method and system for a distributed optical transmitter with local domain splitting

#9

20220077936

2022-03-10

Linearized optical digital-to-analog modulator

#10

20210328680

2021-10-21

System and method for single-stage frequency-domain equalization

#11

20210083798

2021-03-18

Variable Spectral Efficiency Optical Modulation Schemes

#12

20210075514

2021-03-11

Multi-modulation-format compatible high-speed laser signal generation system and method

#13

20200350993

2020-11-05

Method and system for a distributed optical transmitter with local domain splitting

#14

20200036475

2020-01-30

Variable spectral efficiency optical modulation schemes

#15

20200036449

2020-01-30

Method and system for a distributed optical transmitter with local domain splitting

#16

20190363798

2019-11-28

Linearized optical digital-to-analog modulator

#17

20190273561

2019-09-05

Linearized optical digital-to-analog modulator

#18

20190199442

2019-06-27

Dual parallel Mach-Zehnder-modulator device with pre-distorted driving voltages

#19

20190173586

2019-06-06

PAM-4 transmitter precoder for 1+0.5D PR channels

#20

20180343066

2018-11-29

Apparatus and methods for power efficient multi-format optical transmission

#21

20170302291

2017-10-19

Linearized optical digital-to-analog modulator

#22

20170272207

2017-09-21

VARIABLE SPECTRAL EFFICIENCY OPTICAL MODULATION SCHEMES

#23

20170250756

2017-08-31

High speed signal generator

#24

20170195056

2017-07-06

Optical communication system

#25

20170164367

2017-06-08

Techniques for channel estimation using user equipment specific reference signals based on smoothed precoders in a frequency domain

#26

20170163318

2017-06-08

Method and apparatus for transmitting feedback signals

#27

20170134096

2017-05-11

Optical N-level quadrature amplitude modulation (NQAM) generation based on phase modulator

#28

20170054511

2017-02-23

Dual parallel Mach-Zehnder-modulator device with pre-distorted driving voltages

#29

20160269123

2016-09-15

Optical transmitter, optical transmission system and optical communication control method

#30

20160211921

2016-07-21

Method and system for a distributed optical transmitter with local domain splitting

#31

20160087751

2016-03-24

Linear dispersion polarization-time codes and equalization in polarization multiplexed coherent optical system

#32

20160043732

2016-02-11

Linearized optical digital-to-analog modulator

#33

20150381281

2015-12-31

High speed signal generator

#34

20150256257

2015-09-10

Secure data transmission using spatial multiplexing

#35

20150244468

2015-08-27

Optimum modulator bias systems and methods in coherent optical transmitters

#36

20150195045

2015-07-09

Optical modulation schemes having reduced nonlinear optical transmission impairments

#37

20150194982

2015-07-09

Linearized optical digital-to-analog modulator

#38

20150117869

2015-04-30

Optical multilevel transmitter and optical transponder

#39

20150063823

2015-03-05

Method, transmitter and receiver device for transmitting a binary digital transmit signal over an optical transmission link

#40

20140369680

2014-12-18

Variable spectral efficiency optical modulation schemes

#41

20140321857

2014-10-30

Linearized optical digital-to-analog modulator

#42

20140294402

2014-10-02

Optical transmission apparatus, optical transmission method and program for optical transmission

#43

20140255037

2014-09-11

Optical transmission for binary and duobinary modulation formats

#44

20140161469

2014-06-12

High speed signal generator

#45

20140105605

2014-04-17

Driver for multi-stage wave guide modulator and method

#46

20140079394

2014-03-20

Optical communication of interleaved symbols associated with polarizations

#47

20140010538

2014-01-09

Optical polarization multilevel signal receiving apparatus, optical polarization multilevel signal transmitting apparatus, and optical polarization multilevel signal transmission apparatus

#48

20130272704

2013-10-17

Linear dispersion polarization-time codes and equalization in polarization multiplexed coherent optical system

#49

20130156420

2013-06-20

Adaptive forward error correction in passive optical networks

#50

20130108270

2013-05-02

Variable bit-rate QPSK transmitter and method employing polarization manipulation

#51

20130107341

2013-05-02

Modulation device and modulation method, and demodulation device and demodulation method

#52

20130089327

2013-04-11

Polarization switching for optical fiber communications

#53

20130089326

2013-04-11

Nonbinary LDPC coded modulation without bandwidth expansion for high-speed optical transmission

#54

20120321323

2012-12-20

Variable line-rate optical transmitter by modulation format hopping using electrical-optical-electrical EOE generated QAM Signal

#55

20120263456

2012-10-18

Skew suppression method and optical transmission system

#56

20120263454

2012-10-18

Crosstalk-free high-dimensional constellations for dual-polarized nonlinear fiber-optic communications

#57

20120260142

2012-10-11

Four-dimensional non-binary LDPC-coded modulation schemes for ultra high-speed optical fiber communication

#58

20120251098

2012-10-04

Method, apparatus and system for high-speed transmission on fiber optic channel

#59

20120177372

2012-07-12

Apparatus and method for generating interleaved return-to-zero (IRZ) polarization-division multiplexed (PDM) signals

#60

20120177365

2012-07-12

Secure data transmission using spatial multiplexing

#61

20120177065

2012-07-12

Secure Data Transmission Using Spatial Multiplexing

#62

20120081245

2012-04-05

Linearized optical digital-to-analog modulator

#63

20120027420

2012-02-02

Method and apparatus for generating optical duo binary signals with frequency chirp

#64

20110317238

2011-12-29

Method and apparatus for optical phase modulation

#65

20110305457

2011-12-15

Optical multi-level transmission system

#66

20110280588

2011-11-17

PARTIAL DPSK (PDPSK) TRANSMISSION SYSTEMS

#67

20110274436

2011-11-10

Optical communication system

#68

20110255876

2011-10-20

Optical transmitter

#69

20110158654

2011-06-30

DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING SYSTEM, METHOD, AND DEVICE

#70

20110129230

2011-06-02

OPTICAL TRANSMISSION APPARATUSES, METHODS, AND SYSTEMS

#71

20110044573

2011-02-24

Advanced modulation formats for silicon-based optical modulators

#72

20110043888

2011-02-24

Modulation system and method for generating a return-to-zero (RZ) optical data signal

#73

20110026924

2011-02-03

OFDM OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION METHOD

#74

20110008054

2011-01-13

Modulator and demodulator for a differential optical modulation format with eight phase changes

#75

20100329694

2010-12-30

Electrical domain suppression of linear crosstalk in optical communication systems

#76

20100290551

2010-11-18

METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION ON FIBER OPTIC CHANNEL

#77

20100272446

2010-10-28

Control system for a polar optical transmitter

#78

20100245967

2010-09-30

Modulator device for generating an optical transfer signal modulated by binary signal

#79

20100215365

2010-08-26

Optical modulator and optical communication system

#80

20100202775

2010-08-12

Method, apparatus and system for high-speed transmission on fiber optic channel

#81

20100189443

2010-07-29

High speed signal generator

#82

20100178062

2010-07-15

RZ-DPSK MODULATED OPTICAL SIGNAL GENERATION APPARATUS AND METHOD

#83

20100172655

2010-07-08

Non-feedback pre-encoder for optical DQPSK modulation

#84

20100172653

2010-07-08

Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system

#85

20100158539

2010-06-24

Amplification circuit, differential amplification circuit, and optical transmitter

#86

20100156679

2010-06-24

Linearized optical digital-to-analog modulator

#87

20100119007

2010-05-13

Precoder circuit

#88

20100111531

2010-05-06

Optical transmission/reception system, optical transmitter, optical receiver, and optical transmission/reception method

#89

20100061738

2010-03-11

Signal Processor for Compensating for Optical Fiber Chromatic Dispersion

#90

20100028024

2010-02-04

Secure optical communications system and method with coherent detection

#91

20090304395

2009-12-10

Tunable Electrical Return-to-Zero Modulation Method and Apparatus

#92

20090252501

2009-10-08

Device and method for transmitting optical data signals

#93

20090238580

2009-09-24

Pre-equalized optical transmitter and pre-equalized optical transmission system

#94

20090238305

2009-09-24

METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION

#95

20090226185

2009-09-10

FIBER OPTIC COMMUNICATIONS USING HUE BASED ENCODING

#96

20090196602

2009-08-06

Adjustable bit rate optical transmission using programmable signal modulation

#97

20090180785

2009-07-16

OPTICAL TRANSMITTER, OPTICAL TRANSMISSION SYSTEM AND MODULATION SCHEME SELECTION METHOD

#98

20090136241

2009-05-28

OPTICAL MSK DATA FORMAT

#99

20080285983

2008-11-20

Modulation scheme for tedons

#100

20080240729

2008-10-02

Data transmission system and transmission code generating method for the same

#101

20080240726

2008-10-02

Phase coded non-return-to-zero optical transmitter

#102

20080205903

2008-08-28

Optical transmission system

#103

20080170641

2008-07-17

Method, apparatus and system for high-speed transmission on fiber optic channel

#104

20080085127

2008-04-10

Optical transmitter and optical transmission system

#105

20080063401

2008-03-13

Method, apparatus and system for high-speed transmission on fiber optic channel

#106

20070280701

2007-12-06

Method and Apparatus for Producing High Extinction Ratio Data Modulation Formats

#107

20070274731

2007-11-29

Method and apparatus for optical phase modulation

#108

20070223937

2007-09-27

All-optical intensity to DPSK converter

#109

20070201692

2007-08-30

Data transmission apparatus, data transmission method

#110

20070196110

2007-08-23

Partial DPSK (PDPSK) transmission systems

#111

20070183791

2007-08-09

Multiformat transmitter

#112

20070139754

2007-06-21

Optical transmission device and optical phase modulator

#113

20070116477

2007-05-24

Method and apparatus for producing RZ-DPSK modulated optical signals

#114

20070116476

2007-05-24

Method and apparatus for generating optical duo binary signals with frequency chirp

#115

20070092263

2007-04-26

Method, apparatus and system for high-speed transmission on fiber optic channel

#116

20070058988

2007-03-15

Optical transmission system, optical transmitter for optical transmission system, and optical receiver for optical transmission system

#117

20070053697

2007-03-08

Parallel precoder circuit

#118

20070047968

2007-03-01

Method, apparatus and system for high-speed transmission on fiber optic channel

#119

20070042735

2007-02-22

System and method for generating optical return-to-zero signals with differential bi-phase shift and frequency chirp

#120

20070009269

2007-01-11

Optical return-to-zero phase-shift keying with improved transmitters

#121

20070009264

2007-01-11

Data transmission method and a system thereof

#122

20070003179

2007-01-04

QPSK light modulator

#123

20060269294

2006-11-30

Optical transmission equipment and integrated circuit

#124

20060245763

2006-11-02

Optical transmitter

#125

20060222374

2006-10-05

Modulation scheme for tedons

#126

20060216039

2006-09-28

Polarization duobinary optical transmitter

#127

20060215709

2006-09-28

Code conversion circuit

#128

20060204162

2006-09-14

Device for Mach-Zehnder modulator bias control for duobinary optical transmission and associated system and method

#129

20060193399

2006-08-31

Optical communication device

#130

20060193230

2006-08-31

System and method for generating optical return-to-zero signals with differential bi-phase shift

#131

20060193229

2006-08-31

System and method for generating optical return-to-zero signals with alternating bi-phase shift

#132

20060193228

2006-08-31

System and method for generating optical return-to-zero signals with alternating bi-phase shift and frequency chirp

#133

20060171722

2006-08-03

Multi-wavelength optical CDMA with differential encoding and bipolar differential detection

#134

20060127104

2006-06-15

Control system for a polar optical transmitter

#135

20060127102

2006-06-15

Modulation E-field based control of a non-linear transmitter

#136

20060110168

2006-05-25

Return-to-zero alternative-mark-inversion optical transmitter and method for generating return-to-zero alternative-mark-inversion optical signal using the same

#137

20060093377

2006-05-04

Optical phase modulation

#138

20060083519

2006-04-20

Chirped RZ-AMI optical transmitter

#139

20060045539

2006-03-02

Method and system for increasing the spectral efficiency of binary coded digital signals

#140

20060024062

2006-02-02

Pre-compensation for modulator distortion in optical systems

#141

20060018667

2006-01-26

Optical transmission apparatus using duobinary modulation

#142

20060013596

2006-01-19

Bandwidth limited frequency shift keying modulation format

#143

20060002714

2006-01-05

Method and apparatus for optical signal transmission

#144

20050281562

2005-12-22

Method for transmitting a data flow over an optical bus, corresponding system and computer program product

#145

20050226639

2005-10-13

Method of transmitting digital signals over an optical transmission system

#146

20050207759

2005-09-22

Optical duo-binary transmission apparatus using polarization modulator

#147

20050185968

2005-08-25

Method and apparatus for optical transmission

#148

20050117915

2005-06-02

Optical transmission method and system

#149

20050116841

2005-06-02

Duo-binary encoder and optical duo-binary transmission apparatus

#150

20050111855

2005-05-26

Modified DPSK transmission system

#151

20050105916

2005-05-19

Optical transmitter for generating duobinary CSRZ and CSRZ-DPSK optical signals for use in optical communication system

#152

20050100347

2005-05-12

Optical data transmitting apparatus and method

#153

20050100346

2005-05-12

Optical transmitter for use in high-density wavelength division multiplexing (WDM) optical transmission system

#154

20050078965

2005-04-14

RZ-AMI optical transmitter module

#155

20050074245

2005-04-07

Differential encoder for an optical DQPSK modulator

#156

20050069331

2005-03-31

Return-to-zero optical transmission device

#157

20050069330

2005-03-31

System and method for optical transmission

#158

20050058461

2005-03-17

Optical transmission device

#159

20050053384

2005-03-10

Duo-binary encoder and optical duo-binary transmission apparatus using the same

#160

20050053382

2005-03-10

Duobinary optical transmitter

#161

20050047797

2005-03-03

Duobinary optical transmission device using at least one semiconductor optical amplifier

#162

20050047793

2005-03-03

Scheme for reducing low frequency components in an optical transmission network

#163

20050041983

2005-02-24

Method of forming a coded optical signal with a return to zero or non return to zero format

#164

20050002676

2005-01-06

Optical phase and intensity modulation with improved transmitters

#165

16919237

2021-11-02

Active modulator with integrated LNA driver

#166

16234635

2019-04-23

Linearized optical digital-to-analog modulator

#167

16188899

2019-09-24

Method and system for a distributed optical transmitter with local domain splitting

#168

15827960

2019-02-12

PAM-4 transmitter precoder for 1+0.5D PR channels

#169

15797241

2019-08-13

Method and apparatus for distortion correction in optical communication links

#170

15289874

2018-02-20

Coded modulation with amplitude and phase-shift keying having a circular constellation for variable spectral efficiency

#171

15252923

2017-10-31

Method and apparatus for distortion correction in optical communication links

#172

13956084

2016-09-06

Method and apparatus for distortion correction in optical communication links