H04B10/50575 - CPC Classification Index

#1

20260121758

2026-04-30

RING MODULATOR BASELINE WANDER COMPENSATION

#2

20260088905

2026-03-26

MARKERS FOR DUAL-POLARIZATION OPTICAL SYSTEMS

#3

20250309848

2025-10-02

RADIOFREQUENCY DEVICE WITH MULTIPLE OPERATING MODES

#4

20250080224

2025-03-06

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

#5

20240340087

2024-10-10

METHOD AND APPARATUS OF AUTOMATIC BIAS CONTROL FOR INTENSITY MODULATED SILICON MODULATOR

#6

20240129042

2024-04-18

COMMUNICATION DEVICE INCLUDING NESTED MODULATOR AND BIAS CONTROL METHOD FOR NESTED MODULATOR

#7

20240048244

2024-02-08

DEVICE FOR GENERATING WIDE CAPTURE RANGE FREQUENCY TUNABLE OPTICAL MILLIMETER-WAVE SIGNAL

#8

20230080354

2023-03-16

Optical transmitter, communication apparatus, and method of controlling bias voltage of electro-optic modulator

#9

20230057029

2023-02-23

Optical transmitter, optical transmission system, and method of transmitting an optical signal

#10

20230050876

2023-02-16

Combinatorial optimization problem processor and method

#11

20220299800

2022-09-22

Bias control method of optical modulator and optical transmission module

#12

20220182149

2022-06-09

RING MODULATOR BASELINE WANDER COMPENSATION

#13

20210294129

2021-09-23

Bias voltage generation in an optical measurement system

#14

20210250099

2021-08-12

Controller and control method

#15

20210211202

2021-07-08

OPTICAL TRANSMITTER WITH MACH-ZEHNDER MODULATOR AND METHOD FOR OPERATING THE SAME

#16

20210210926

2021-07-08

Optical transmitter including a graded or sloped passband filter, and methods of making and using the same

#17

20210135759

2021-05-06

Optical transmission apparatus and bias control method

#18

20200272018

2020-08-27

Mach-zehnder optical modulator and optical modulation method

#19

20200116932

2020-04-16

Electro-absorption modulator with integrated control loop for linearization and temperature compensation

#20

20200099454

2020-03-26

Optical modulator and method of use

#21

20190363799

2019-11-28

Off quadrature mach-zehnder modulator biasing

#22

20190310497

2019-10-10

Closed loop bias control for an IQ phase modulator

#23

20190268070

2019-08-29

Optical communication system, transmitter and receiver

#24

20190243165

2019-08-08

Optical modulator with automatic bias correction

#25

20190238234

2019-08-01

Integrated control loop for linearization and temperature compensation of an electro-absorption modulator

#26

20190227352

2019-07-25

CLOSED LOOP QUADRATURE BIAS CONTROL FOR AN IQ PHASE MODULATOR

#27

20190222308

2019-07-18

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

#28

20190190612

2019-06-20

Methods and systems for multi-level beacon tone modulation of an optical data signal

#29

20190181956

2019-06-13

Systems and methods for biasing optical modulating devices

#30

20190165864

2019-05-30

Minimizing polarization-dependent optical power for PM-M-QAM transmitters

#31

20190158188

2019-05-23

Optical signal transmission apparatus for generating multi-level optical signal and method performed by the same

#32

20190115980

2019-04-18

Optical transmitter, optical transmission apparatus, and method of controlling optical transmitter

#33

20190089464

2019-03-21

Laser power controller

#34

20190036611

2019-01-31

Optical transmitter and method of controlling the same

#35

20190036610

2019-01-31

Off quadrature mach-zehnder modulator biasing

#36

20180323878

2018-11-08

Optical transmitter and bias voltage control method

#37

20180269978

2018-09-20

Systems and methods for biasing optical modulating devices

#38

20180241474

2018-08-23

Electro-optical modulator with differential bias control

#39

20180219354

2018-08-02

Method for control of optical intensity and extinction ratio of laser modulation in an optical transmitter

#40

20180196289

2018-07-12

Optical modulator having Mach-Zehnder diodes of reduced length

#41

20180191444

2018-07-05

Bias control of nested mach-zehnder modulators for the generation of optical QAM signals

#42

20180183553

2018-06-28

Method and apparatus for generating a tone signal

#43

20180183526

2018-06-28

Calibration of pluggable optical module

#44

20180180965

2018-06-28

Light modulation element

#45

20180173023

2018-06-21

Bias control of optical modulators

#46

20180123698

2018-05-03

Method and apparatus for automatically controlling bias voltage of optical modulator

#47

20180088359

2018-03-29

Optical module that includes optical modulator and bias control method for optical modulator

#48

20180031870

2018-02-01

Dither free bias control

#49

20180026723

2018-01-25

Inherently broadband linearized electro-optic modulator with customizable performance

#50

20170294967

2017-10-12

Asynchronous bias control for an optical modulator using a multiple tone detection technique with phase correction

#51

20170293165

2017-10-12

Optical transmission device, optical modulator, and bias control method

#52

20170227796

2017-08-10

Apparatus and method of controlling optical modulator bias based on eye-amplitude monitoring

#53

20170199399

2017-07-13

Optical modulator with automatic bias correction

#54

20170170907

2017-06-15

OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD

#55

20170149507

2017-05-25

Optical transmitter and method for controlling the same

#56

20170134096

2017-05-11

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

#57

20170033871

2017-02-02

Optical transmitter and method of controlling optical modulator

#58

20160337042

2016-11-17

Minimizing polarization-dependent optical power for transmitters

#59

20160282638

2016-09-29

Automatic bias stabilization of dual-polarization in-phase and quadrature optical modulator

#60

20160266415

2016-09-15

Optical modulator with automatic bias correction

#61

20160218801

2016-07-28

Control apparatus and method for monitoring optical fiber link

#62

20160173304

2016-06-16

Signal generating apparatus and signal generating method

#63

20160170284

2016-06-16

Electro-optical modulator with bias control

#64

20160156418

2016-06-02

Bias control circuit for optical modulator, and optical transmitter comprising the same

#65

20160156416

2016-06-02

Optical transmitter and bias control method for optical modulator

#66

20160142151

2016-05-19

Wavelength stabilizer for TWDM-PON burst mode DBR laser

#67

20160112139

2016-04-21

Optical signal processing apparatus, optical signal processing method, and recording medium

#68

20160112138

2016-04-21

Apparatus and method for monitoring signal quality of a modulated optical signal

#69

20160099776

2016-04-07

Optical transmitter and waveform distortion correction method

#70

20160065310

2016-03-03

Optical communication apparatus and method of controlling optical modulator

#71

20160056897

2016-02-25

Optical communication device and method of controlling optical modulator

#72

20160056896

2016-02-25

Optical communication device and method of controlling optical modulator

#73

20160036533

2016-02-04

Optical transmitter and method for controlling bias of optical modulator

#74

20150318921

2015-11-05

Bias monitoring method and apparatus and transmitter

#75

20150270905

2015-09-24

Bias control of nested Mach-Zehnder modulators for the generation of optical QAM signals

#76

20150244468

2015-08-27

Optimum modulator bias systems and methods in coherent optical transmitters

#77

20150236790

2015-08-20

Mach-Zehnder modulator bias control for arbitrary waveform generation

#78

20150222365

2015-08-06

Optical transmitter and bias voltage control method

#79

20150207569

2015-07-23

Method and apparatus for stabilization of optical transmitter

#80

20150188639

2015-07-02

Optical transmitter and control apparatus of optical modulator

#81

20150171971

2015-06-18

Optical transmitter and control method of optical transmitter

#82

20150132014

2015-05-14

QPSK signal conjugate relationship identification method and apparatus, and dispersion compensation method and system

#83

20150110437

2015-04-23

Controlling bias voltages for optical modulators

#84

20150104195

2015-04-16

Working point controlling device and method for applying MZ modulator

#85

20150104179

2015-04-16

Wavelength stabilizer for TWDM-PON burst mode DBR laser

#86

20150071583

2015-03-12

Optical modulator and optical modulation control method

#87

20150071582

2015-03-12

Optical modulator and optical modulation control method

#88

20140363175

2014-12-11

Optical transmitter and method of controlling optical transmitter

#89

20140334829

2014-11-13

Optical transmitter and bias control method of optical modulator

#90

20140308047

2014-10-16

Optimum modulator bias systems and methods in coherent optical transmitters

#91

20140294401

2014-10-02

Optical transmitter and method thereof

#92

20140241657

2014-08-28

Optical modulator with automatic bias correction

#93

20140233965

2014-08-21

System and method for monitoring and control of an optical modulator for an M-QAM transmitter

#94

20140168741

2014-06-19

Bias voltage control system and bias voltage control method

#95

20140153077

2014-06-05

Optical modulation device and bias voltage control method

#96

20140119723

2014-05-01

Optical module and detection circuit thereof

#97

20140023368

2014-01-23

Method and apparatus for stabilization of optical transmitter

#98

20140010533

2014-01-09

Automatic bias control method and apparatus for optical transmitter

#99

20130315585

2013-11-28

Passive wavelength division multiplexing device for automatic wavelength locking and system thereof

#100

20130302031

2013-11-14

Optical transmitter and optical signal transmission method

#101

20130202315

2013-08-08

Optical transmitter and method for controlling bias for optical modulator

#102

20130156444

2013-06-20

Optical modulation device and control method in optical modulation device

#103

20130155482

2013-06-20

Optical modulation device and optical modulation method

#104

20130148981

2013-06-13

Optical transmitter

#105

20130141772

2013-06-06

Sensitivity Improvement of Mach-Zehnder Modulator Bias Control

#106

20130101296

2013-04-25

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

#107

20130051723

2013-02-28

Optical frequency comb generating device and optical pulse generating device using same, and optical frequency comb generating method and optical pulse generating method using same

#108

20130044366

2013-02-21

Method and apparatus for controlling bias point of differential quadrature phase shift keying demodulator

#109

20130022306

2013-01-24

Gain control for an optical modulator

#110

20130016418

2013-01-17

Method and apparatus for determining bias point of modulator

#111

20120308240

2012-12-06

Optical transmitter, control method for the same, and optical transmission system

#112

20120301153

2012-11-29

Optical output module, optical transceiver, and optical transmission system

#113

20120288284

2012-11-15

OPTICAL TRANSMITTER

#114

20120251104

2012-10-04

Modulator control system and method in an optical network

#115

20120207483

2012-08-16

Apparatus and Method for Control the Driving Amplitude of Differential Quadrature Phase Shift Keying Transmitter

#116

20120155880

2012-06-21

Optical modulator and optical modulation control method

#117

20120155865

2012-06-21

Optical signal transmitter, and bias voltage control method

#118

20120134619

2012-05-31

Optical modulation apparatus, method for controlling optical modulator, and control device for optical modulator

#119

20120087617

2012-04-12

Optical modulator and optical modulating method

#120

20120082465

2012-04-05

Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them

#121

20120033964

2012-02-09

METHOD AND APPARATUS FOR CONTROL OF DPSK AND DQPSK RECEIVERS AND TRANSMITTERS

#122

20120008963

2012-01-12

Optical modulator, optical transmission device, and bias adjusting method

#123

20110267670

2011-11-03

Bias point control circuit for externally modulated transmitter

#124

20110229148

2011-09-22

Optical modulation apparatus and optical modulation method

#125

20110222853

2011-09-15

Polarized-wave-multiplexing optical transmitter and control method of polarized-wave-multiplexed optical signal

#126

20110211830

2011-09-01

Optical communication apparatus and optical add/drop apparatus

#127

20110206384

2011-08-25

Bias control in an optical modulator and transmitter

#128

20110170877

2011-07-14

Optical transmitter apparatus

#129

20110164300

2011-07-07

Method and device for bias control of a laser MZ modulator

#130

20110129232

2011-06-02

External modulator monitoring device and external modulator monitoring method

#131

20110064351

2011-03-17

Optical phase modulator and optical phase modulating device

#132

20110026935

2011-02-03

Optical signal transmitter and method for controlling polarization multiplexed optical signal

#133

20110013907

2011-01-20

Multi-value optical transmitter

#134

20100315018

2010-12-16

Method and apparatus for producing linearized optical signals

#135

20100272446

2010-10-28

Control system for a polar optical transmitter

#136

20100254716

2010-10-07

Control apparatus and control method for optical modulator

#137

20100172653

2010-07-08

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

#138

20100150575

2010-06-17

Method and Optical Transmitter for Optimizing DC Bias Voltage Input to Optical Modulator with Duo-Binary Modulation

#139

20100142964

2010-06-10

OPTICAL TRANSMISSION APPARATUS WITH STABLE OPTICAL SIGNAL OUTPUT

#140

20100142025

2010-06-10

Control apparatus and method of external modulator

#141

20100128336

2010-05-27

Integrated control system for laser and Mach-Zehnder interferometer

#142

20100119239

2010-05-13

Bias control apparatus and method for optical modulator

#143

20100098435

2010-04-22

Optical transmitter apparatus

#144

20090324252

2009-12-31

Optical transmitter

#145

20090297168

2009-12-03

Optical communication apparatus and optical add/drop apparatus

#146

20090252502

2009-10-08

METHODS AND SYSTEMS FOR OPTICAL COMMUNICATION

#147

20090244685

2009-10-01

Optical modulator and controlling method and apparatus thereof

#148

20090232518

2009-09-17

Optical transmitter with adaptively controlled optically linearized modulator

#149

20090232517

2009-09-17

Ditherless optical modulator control

#150

20090034988

2009-02-05

Control apparatus and control method for optical modulator

#151

20090003840

2009-01-01

Controlling a bias voltage for a Mach-Zehnder modulator

#152

20080304827

2008-12-11

Frequency shift keying demodulator

#153

20080187324

2008-08-07

Optical transmitter and control method therefor

#154

20080175598

2008-07-24

Software-based electro-optic modulator bias control systems and methods

#155

20080130083

2008-06-05

Drive apparatus for an optical modulator with a ternary drive signal, optical transmitter, and optical transmission system

#156

20080107428

2008-05-08

Optical transmitter and optical communication system

#157

20080095543

2008-04-24

Optical communication apparatus and optical add/drop apparatus

#158

20080089634

2008-04-17

Segmented optical modulator

#159

20080080872

2008-04-03

Optical transmitter

#160

20080080859

2008-04-03

OTDM-DPSK signal generator capable of detecting an optical carrier phase difference between optical pulses

#161

20080075470

2008-03-27

Optical transmission device

#162

20080056728

2008-03-06

Optical transmitter, operation controlling method for the same, and recording medium

#163

20070292142

2007-12-20

Method for generating carrier residual signal and its device

#164

20070269223

2007-11-22

Optical communication apparatus

#165

20070212075

2007-09-13

DUAL-PARALLEL-MZ MODULATOR BIAS CONTROL

#166

20070177882

2007-08-02

Optical transmitter apparatus

#167

20070165294

2007-07-19

Integrated circuit for adjusting bias in optical transmitter with external modulator

#168

20070146860

2007-06-28

Optical modulation device, optical transmitter, and optical transmission equipment

#169

20070134006

2007-06-14

Method for adjusting bias in optical transmitter with external modulator

#170

20070122161

2007-05-31

Fiber optical transmission system, transmitter and receiver for DQPSK modulated signals and method for stabilizing the same

#171

20070092266

2007-04-26

Method and apparatus for controlling bias point of optical transmitter

#172

20070092262

2007-04-26

Adaptive optical transmitter for use with externally modulated lasers

#173

20070065161

2007-03-22

Optical transmitting apparatus and optical communication system

#174

20070058988

2007-03-15

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

#175

20070047954

2007-03-01

Method and apparatus for control of DPSK and DQPSK receivers and transmitters

#176

20060263098

2006-11-23

Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them

#177

20060263097

2006-11-23

Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them

#178

20060210210

2006-09-21

Adaptive pulse shape control

#179

20060204162

2006-09-14

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

#180

20060127104

2006-06-15

Control system for a polar optical transmitter

#181

20060127103

2006-06-15

Method and apparatus for bias and alignment control in an optical signal transmitter

#182

20060127102

2006-06-15

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

#183

20060088322

2006-04-27

Optical transmitter device

#184

20060034616

2006-02-16

Automatic bias control for an optical modulator

#185

20060002714

2006-01-05

Method and apparatus for optical signal transmission

#186

20050254743

2005-11-17

Optical modulator, optical transmitter, optical modulating method and manufacturing method of the optical modulator

#187

20050249444

2005-11-10

Optical transmitter and its control method

#188

20050225826

2005-10-13

Electroabsorption modulator biasing

#189

20050213862

2005-09-29

Bias adjustment method for optical SSB modulator or optical FSK modulator

#190

20050157290

2005-07-21

Optical modulating apparatus having bias controller and bias control method

#191

20050129411

2005-06-16

Apparatus and method for optimizing bias voltage of electro-optic modulator and optical transmitting system using the same

#192

20050128555

2005-06-16

Apparatus and method for automatically correcting bias voltage for carrier suppressed pulse generating modulator

#193

20050117191

2005-06-02

Modulation control

#194

20050105917

2005-05-19

Optical modulating apparatus

#195

20050008374

2005-01-13

Optical transmitter

#196

18680843

2024-11-05

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

#197

18585565

2025-01-21

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

#198

18238801

2024-02-27

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

#199

16417788

2020-08-11

Bias control of optical modulators

#200

15386910

2018-05-01

Method of short optical pulse generation

#201

15342855

2018-06-12

Systems and methods for biasing optical modulating devices

#202

14316566

2016-11-15

Systems and methods for biasing optical modulating devices