ClassID:

223897

H04B10/50572 - 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; Transmitters; Structural aspects; Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the modulating signal amplitude including amplitude distortion

Recent Application in this class:
#1
20260135353
2026-05-14

Systems and Methods for Distributing Optical Signals Using a Photonic Integrated Circuit

#2
20260086306
2026-03-26

TEMPERATURE CONTROL DEVICE FOR OPTICAL MODULATORS, AND OPTICAL LINK DEVICE INCLUDING SAME

#3
20240283544
2024-08-22

OPTICAL TRANSMISSION SYSTEM, TRANSMISSION APPARATUS, RECEIVING APPARATUS AND METHOD FOR DEVICE CHARACTERISTIC ESTIMATION

#4
20240243813
2024-07-18

IMPROVING CLASSICAL AND QUANTUM FREE-SPACE COMMUNICATION BY ADAPTIVE OPTICS AND BY SEPARATING THE REFERENCE AND SIGNAL BEAMS WITH TIME DELAY FOR SOURCE(S) MOVING RELATIVE TO THE DETECTOR(S)

#5
20240137127
2024-04-25

OPTICAL TRANSMITTER THAT TRANSMITS MULTI-LEVEL SIGNAL

#6
20240129042
2024-04-18

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

#7
20230352465
2023-11-02

LED-BASED PHOTONIC COMMUNICATION AND PROCESSING UNIT

#8
20230291475
2023-09-14

GAIN AND TARGET AMPLITUDE TUNING IN A RECEIVER

#9
20230239055
2023-07-27

Adjusting eye heights and optical power levels of a multi-level optical signal

#10
20230045986
2023-02-16

Adjusting eye heights and optical power levels of a multi-level optical signal

#11
20220337321
2022-10-20

Voltage controlled electro-optical serializer/deserializer (SerDes)

#12
20220320832
2022-10-06

Systems and Methods for Distributing Optical Signals Using a Photonic Integrated Circuit

#13
20220109504
2022-04-07

Receiving device and receiving method

#14
20210409121
2021-12-30

Transmitting and receiving device, terminal device, and transmitting and receiving system

#15
20210184768
2021-06-17

Interference suppression with mitigation of intermodulation distortion

#16
20200412452
2020-12-31

Interference suppression with mitigation of intermodulation distortion

#17
20200274621
2020-08-27

Optical transmitter and method of controlling optical transmitter

#18
20180219631
2018-08-02

Optical communication apparatus and optical communication system

#19
20180219354
2018-08-02

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

#20
20180212682
2018-07-26

Ring-resonator modulation of an optical signal

#21
20180191443
2018-07-05

Adaptive Mach Zehnder modulator linearization

#22
20180183526
2018-06-28

Calibration of pluggable optical module

#23
20180145760
2018-05-24

Methods and systems for reducing noise in optoelectronic oscillators

#24
20180031945
2018-02-01

Optical modulator and optical module

#25
20170293165
2017-10-12

Optical transmission device, optical modulator, and bias control method

#26
20170070297
2017-03-09

Optical modulators and data processing systems using the same

#27
20170033871
2017-02-02

Optical transmitter and method of controlling optical modulator

#28
20160337040
2016-11-17

Adaptive mach zehnder modulator linearization

#29
20160218801
2016-07-28

Control apparatus and method for monitoring optical fiber link

#30
20160156416
2016-06-02

Optical transmitter and bias control method for optical modulator

#31
20160112139
2016-04-21

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

#32
20160112138
2016-04-21

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

#33
20160105244
2016-04-14

Optical transmitter, method for controlling optical modulator, and controller for optical modulator

#34
20160099776
2016-04-07

Optical transmitter and waveform distortion correction method

#35
20160094295
2016-03-31

Near-threshold optical transmitter pre-distortion

#36
20150288457
2015-10-08

EML bias control system

#37
20150229403
2015-08-13

Adaptive mach zehnder modulator linearization

#38
20150188627
2015-07-02

Optical communication module, optical network unit, and method of controlling light-emitting element

#39
20150071583
2015-03-12

Optical modulator and optical modulation control method

#40
20150071582
2015-03-12

Optical modulator and optical modulation control method

#41
20140363175
2014-12-11

Optical transmitter and method of controlling optical transmitter

#42
20140186056
2014-07-03

Closed loop optical modulation amplitude control

#43
20140169802
2014-06-19

Modulator for optical transmitter

#44
20140126913
2014-05-08

Modulating apparatus

#45
20130155482
2013-06-20

Optical modulation device and optical modulation method

#46
20130142506
2013-06-06

Closed loop optical modulation amplitude control

#47
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

#48
20120207483
2012-08-16

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

#49
20120155880
2012-06-21

Optical modulator and optical modulation control method

#50
20120155865
2012-06-21

Optical signal transmitter, and bias voltage control method

#51
20110229148
2011-09-22

Optical modulation apparatus and optical modulation method

#52
20110170877
2011-07-14

Optical transmitter apparatus

#53
20110026935
2011-02-03

Optical signal transmitter and method for controlling polarization multiplexed optical signal

#54
20100272446
2010-10-28

Control system for a polar optical transmitter

#55
20100254715
2010-10-07

Driving method and driving apparatus for optical modulator, and optical transmitter using same

#56
20100098435
2010-04-22

Optical transmitter apparatus

#57
20090324252
2009-12-31

Optical transmitter

#58
20090257757
2009-10-15

Signal identification in optical communications networks

#59
20090252502
2009-10-08

METHODS AND SYSTEMS FOR OPTICAL COMMUNICATION

#60
20090232518
2009-09-17

Optical transmitter with adaptively controlled optically linearized modulator

#61
20090232517
2009-09-17

Ditherless optical modulator control

#62
20090060528
2009-03-05

Optical transmitter

#63
20080175600
2008-07-24

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

#64
20080107428
2008-05-08

Optical transmitter and optical communication system

#65
20080080872
2008-04-03

Optical transmitter

#66
20080056728
2008-03-06

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

#67
20080002991
2008-01-03

Optical transmission device

#68
20070292142
2007-12-20

Method for generating carrier residual signal and its device

#69
20070177882
2007-08-02

Optical transmitter apparatus

#70
20070140705
2007-06-21

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

#71
20070047969
2007-03-01

Differential quadrature phase-shift modulator and method for setting driving voltage thereof

#72
20070003179
2007-01-04

QPSK light modulator

#73
20060291870
2006-12-28

Signal identification in optical communications networks

#74
20060257152
2006-11-16

Sub signal modulation apparatus, sub signal demodulation apparatus, and sub signal modulation demodulation system

#75
20060210210
2006-09-21

Adaptive pulse shape control

#76
20060204162
2006-09-14

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

#77
20060127104
2006-06-15

Control system for a polar optical transmitter

#78
20060127102
2006-06-15

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

#79
20060034616
2006-02-16

Automatic bias control for an optical modulator

#80
20050249444
2005-11-10

Optical transmitter and its control method

#81
20050213862
2005-09-29

Bias adjustment method for optical SSB modulator or optical FSK modulator

#82
20050013612
2005-01-20

Multiple wavelength photonic oscillator

#83
20050012978
2005-01-20

Apparatus and method for optical modulation

#84
20050008373
2005-01-13

Multi-wavelength generating method and apparatus based on flattening of optical spectrum

#85
17339740
2023-08-22

Systems and methods for phase compensation

#86
16847731
2022-10-04

RF processing system and method

#87
16518582
2020-06-09

Digital implementation of closed loop optical modulation amplitude controller for laser diode

#88
16198287
2020-04-21

RF processing system and method

#89
15797241
2019-08-13

Method and apparatus for distortion correction in optical communication links

#90
15252923
2017-10-31

Method and apparatus for distortion correction in optical communication links