ClassID:

223908

H04B10/5162 - 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; Details of coding or modulation Return-to-zero modulation schemes

Recent Application in this class:
#1
20260128800
2026-05-07

LOW POWER MICRO-LED DRIVER FOR HIGH BANDWIDTH SHORT DISTANCE COMMUNICATION

#2
20250202590
2025-06-19

Impulsive Detection Techniques in Free Space Optical Communications

#3
20250132827
2025-04-24

METHOD AND APPARATUS FOR IMPROVING SIDELOBE CANCELLATION IN CODED OPTICAL TIME-DOMAIN REFLECTOMETRY

#4
20250070884
2025-02-27

Impulsive detection techniques in free space optical communications

#5
20220385373
2022-12-01

WAVELENGTH CONVERTER, OPTICAL COMMUNICATION APPARATUS, AND OPTICAL WAVEGUIDE SUBSTRATE

#6
20220123841
2022-04-21

Optical interconnects for a programmable virtualized self-optimizing signal processor

#7
20200366368
2020-11-19

Data communication system including a high-speed main channel and a low-speed stand-by channel with high reliability

#8
20190261470
2019-08-22

VISIBLE LIGHT COMMUNICATION SYSTEM-ON-A-CHIP

#9
20190097728
2019-03-28

High capacity coherent optical transceiver for short reach applications

#10
20190020856
2019-01-17

Systems and methods for filtering and presenting optical beacons or signals

#11
20170331559
2017-11-16

Optical transmitter

#12
20170230118
2017-08-10

Transmitters for optical narrowcasting

#13
20160204872
2016-07-14

Method and apparatus for generating optical polar return-to-zero amplitude modulation signal using reflective semiconductor optical amplifier and wavelength-division-multiplexed passive optical network system using the same

#14
20150104181
2015-04-16

System and method using spectral shaping and expanded channel spacing

#15
20140270808
2014-09-18

Method and system for a polarization mode dispersion tolerant optical homodyne detection system with optimized transmission modulation

#16
20140233964
2014-08-21

Method for generating an optimized return-to-zero pulse shape against aggressive optical filtering and an optical transmitter implementing the method

#17
20140133869
2014-05-15

RZ optical modulator and RZ optical modulation method

#18
20140133867
2014-05-15

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

#19
20130028603
2013-01-31

Method and apparatus for performing temporal polarization interleaving in an optical transmitting system

#20
20130011093
2013-01-10

Optical modulator

#21
20120294622
2012-11-22

Alignment of a data signal to an alignment signal

#22
20120287949
2012-11-15

POLARIZATION MULTIPLEXED SIGNALING USING TIME SHIFTING IN RETURN-TO-ZERO FORMAT

#23
20120251028
2012-10-04

Polarization-alternating optical signal generation using CSRZ modulation

#24
20120201546
2012-08-09

PRE-EQUALIZATION OPTICAL TRANSMITTER AND PRE-EQUALIZATION OPTICAL FIBER TRANSMISSION SYSTEM

#25
20120195599
2012-08-02

System, laser-on-CMOS chip, and method for setting a wavelength to be used by the laser-on-CMOS chip

#26
20120177372
2012-07-12

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

#27
20120128361
2012-05-24

Method and system for a polarization mode dispersion tolerant optical homodyne detection system with optimized transmission modulation

#28
20120082465
2012-04-05

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

#29
20110280588
2011-11-17

PARTIAL DPSK (PDPSK) TRANSMISSION SYSTEMS

#30
20110229150
2011-09-22

Optical modulation apparatus and optical modulation method

#31
20110170877
2011-07-14

Optical transmitter apparatus

#32
20110081153
2011-04-07

Method and device for generating optical signals

#33
20110076019
2011-03-31

System for generating optical RZ signals based on electrical RZ signals

#34
20110032594
2011-02-10

Optical modulation device and optical modulation method

#35
20100254716
2010-10-07

Control apparatus and control method for optical modulator

#36
20100239264
2010-09-23

OPTICAL TRANSMISSION SYSTEM, APPARATUS AND METHOD

#37
20100178062
2010-07-15

RZ-DPSK MODULATED OPTICAL SIGNAL GENERATION APPARATUS AND METHOD

#38
20100177373
2010-07-15

Tunable zero-chirp pulse generator using plasma dispersion phase modulator

#39
20100098435
2010-04-22

Optical transmitter apparatus

#40
20100046957
2010-02-25

Method and system for a polarization mode dispersion tolerant optical homodyne detection system with optimized transmission modulation

#41
20100014872
2010-01-21

Method and apparatus for generating a dispersion compensation signal

#42
20090297165
2009-12-03

Optical transmitting apparatus and optical communication system

#43
20090196612
2009-08-06

Optical modulation method and system in wavelength locked FP-LD by injecting broadband light source using mutually injected FP-LD

#44
20090052905
2009-02-26

Optical transmitting and receiving system

#45
20090041473
2009-02-12

Optical device, optical modulation method, and optical transmitter

#46
20090034988
2009-02-05

Control apparatus and control method for optical modulator

#47
20090034987
2009-02-05

WIDEBAND ELECTRIC SIGNAL MIXER AND OPTICAL TRANSMITTER USING THE SAME

#48
20090022498
2009-01-22

OPTICAL TRANSMISSION SYSTEM

#49
20090003842
2009-01-01

Chirped laser with passive filter element for differential phase shift keying generation

#50
20080240728
2008-10-02

Electrical generation of return-to-zero (RZ) data pattern with flexible duty cycle adjustment for optical transmission

#51
20080239448
2008-10-02

Optical modulation device and optical modulation method

#52
20080226295
2008-09-18

LIGHT MODULATING APPARATUS

#53
20080170864
2008-07-17

Optical device and optical modulation method

#54
20080152356
2008-06-26

Inverter based return-to-zero (RZ)+non-RZ (NRZ) signaling

#55
20080063396
2008-03-13

Optical Subchannels From a Single Lightwave Source

#56
20080056727
2008-03-06

Optical transmitter and drive method of same

#57
20080025731
2008-01-31

Versatile compact transmitter for generation of advanced modulation formats

#58
20070196110
2007-08-23

Partial DPSK (PDPSK) transmission systems

#59
20070177882
2007-08-02

Optical transmitter apparatus

#60
20070116477
2007-05-24

Method and apparatus for producing RZ-DPSK modulated optical signals

#61
20070071454
2007-03-29

Method and system for ultra-high bit rate fiber-optic communications

#62
20070042735
2007-02-22

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

#63
20060263098
2006-11-23

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

#64
20060263097
2006-11-23

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

#65
20060245763
2006-11-02

Optical transmitter

#66
20060228118
2006-10-12

Method and system for 80 and 160 gigabit-per-second QRZ transmission in 100 GHz optical bandwidth with enhanced receiver performance

#67
20060193230
2006-08-31

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

#68
20060120729
2006-06-08

Transmission system and method employing electrical return-to-zero modulation

#69
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

#70
20060083519
2006-04-20

Chirped RZ-AMI optical transmitter

#71
20060051095
2006-03-09

Modulation with low cross-talk in optical transmission

#72
20060008278
2006-01-12

Method and apparatus for CRZ-DQPSK optical signal generation

#73
20050201762
2005-09-15

Optical RZ-duobinary transmission system with narrow bandwidth optical filter

#74
20050128555
2005-06-16

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

#75
20050111854
2005-05-26

Optical multilevel-coded signal transmission system and method thereof, optical transmitter, and multilevel-coded signal light generating method

#76
20050105916
2005-05-19

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

#77
20050012978
2005-01-20

Apparatus and method for optical modulation

#78
18756381
2024-11-19

Impulsive detection techniques in free space optical communications

#79
18590908
2024-07-30

Impulsive detection techniques in free space optical communications

#80
18514849
2024-04-02

Impulsive detection techniques in free space optical communications

#81
18364450
2023-11-28

Impulsive detection techniques in free space optical communications

#82
15395711
2017-05-16

Transmitters for optical narrowcasting

#83
14317339
2015-04-07

Digital architecture for encoding a return-to-zero differential phase shift keying waveform