ClassID:

223910

H04B10/5167 - 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 Duo-binary; Alternative mark inversion; Phase shaped binary transmission

Recent Application in this class:
#1
20260074797
2026-03-12

ELECTRICAL DUOBINARY SOFT INFORMATION RECEIVER FOR NRZ MODULATION FIBER TRANSMISSION

#2
20240187108
2024-06-06

ELECTRICAL DUOBINARY SOFT INFORMATION RECEIVER FOR NRZ MODULATION FIBER TRANSMISSION

#3
20220190931
2022-06-16

Electrical duobinary soft information receiver for NRZ modulation fiber transmission

#4
20210126713
2021-04-29

RoI-based optical wireless communication method and device

#5
20200252131
2020-08-06

RoI-based optical wireless communication method and device

#6
20200195352
2020-06-18

Encoding for optical transmission

#7
20180219706
2018-08-02

Data transmission device for modulating amplitude of PAM-4 signal using toggle serializer and method of operating the same

#8
20160248540
2016-08-25

Optical communication that achieves baud rate greater than sample rate

#9
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

#10
20150229405
2015-08-13

System and method for 400G signal generation and coherent detection

#11
20150222368
2015-08-06

Methods and apparatus for coherent duobinary shaped PM-QPSK signal processing

#12
20150063823
2015-03-05

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

#13
20150030334
2015-01-29

Method, system, and transceiver device for bi-directionally transmitting digital optical signals over an optical transmission link

#14
20140255037
2014-09-11

Optical transmission for binary and duobinary modulation formats

#15
20140099117
2014-04-10

40, 50 and 100 Gb/s optical transceivers/transponders in 300pin and CFP MSA modules

#16
20130177316
2013-07-11

OPTICAL COMMUNICATION SYSTEM, AND TRANSMITTER AND RECEIVER APPARATUS THEREFOR

#17
20120263468
2012-10-18

Generation of Optical Quadrature Duobinary Format Using Optical Delay

#18
20120134670
2012-05-31

TRANSMITTING DEVICE AND TRANSMITTING/RECEIVING DEVICE

#19
20120051756
2012-03-01

Dual polarization transceiver

#20
20120027420
2012-02-02

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

#21
20110032594
2011-02-10

Optical modulation device and optical modulation method

#22
20100322632
2010-12-23

40, 50 and 100 Gb/s optical transceivers/transponders in 300pin and CFP MSA modules

#23
20090324247
2009-12-31

Optical modulator

#24
20090238568
2009-09-24

Optical shaping for amplification in a semiconductor optical amplifier

#25
20090196612
2009-08-06

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

#26
20090180785
2009-07-16

OPTICAL TRANSMITTER, OPTICAL TRANSMISSION SYSTEM AND MODULATION SCHEME SELECTION METHOD

#27
20090136240
2009-05-28

Balanced phase-shaped binary transmission in optical communications

#28
20090092396
2009-04-09

Adaptable duobinary generating filters, transmitters, systems and methods

#29
20090060528
2009-03-05

Optical transmitter

#30
20080239448
2008-10-02

Optical modulation device and optical modulation method

#31
20080205903
2008-08-28

Optical transmission system

#32
20080175594
2008-07-24

Method and apparatus for generating optical duobinary signals with enhanced receiver sensitivity and spectral efficiency

#33
20080158643
2008-07-03

Duobinary modulation with a lumped-element Mach-Zehnder device

#34
20080158640
2008-07-03

OPTICAL APPARATUS UTILIZING MODULATION BASED ON A TERTIARY DRIVE SIGNAL, OPTICAL TRANSMITTER, AND OPTICAL TRANSMISSION SYSTEM

#35
20080152355
2008-06-26

Generation of a full-rate optical duobinary signal using half-rate electrical binary signals

#36
20080037997
2008-02-14

Optical sending apparatus and optical transmission system

#37
20070280701
2007-12-06

Method and Apparatus for Producing High Extinction Ratio Data Modulation Formats

#38
20070183791
2007-08-09

Multiformat transmitter

#39
20070116476
2007-05-24

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

#40
20070071454
2007-03-29

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

#41
20060216039
2006-09-28

Polarization duobinary optical transmitter

#42
20060204162
2006-09-14

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

#43
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

#44
20060083519
2006-04-20

Chirped RZ-AMI optical transmitter

#45
20060072924
2006-04-06

Duo-binary optical transmitter tolerant to chromatic dispersion

#46
20060018667
2006-01-26

Optical transmission apparatus using duobinary modulation

#47
20060002714
2006-01-05

Method and apparatus for optical signal transmission

#48
20050286908
2005-12-29

Optical communication using duobinary modulation

#49
20050265474
2005-12-01

Tunable duobinary transmitter

#50
20050226639
2005-10-13

Method of transmitting digital signals over an optical transmission system

#51
20050226637
2005-10-13

Method of transmitting digital signals over an optical transmission system

#52
20050207759
2005-09-22

Optical duo-binary transmission apparatus using polarization modulator

#53
20050201762
2005-09-15

Optical RZ-duobinary transmission system with narrow bandwidth optical filter

#54
20050116841
2005-06-02

Duo-binary encoder and optical duo-binary transmission apparatus

#55
20050100347
2005-05-12

Optical data transmitting apparatus and method

#56
20050100346
2005-05-12

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

#57
20050058461
2005-03-17

Optical transmission device

#58
20050053384
2005-03-10

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

#59
20050053382
2005-03-10

Duobinary optical transmitter

#60
15847967
2019-05-07

Signal modulator