ClassID:

223871

H04B10/2931 - 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; Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form; Signal power control using AGC

Recent Application in this class:
#1
20260067901
2026-03-05

SIDELINK SYNCHRONIZATION SIGNAL BLOCK FOR COVERAGE ENHANCEMENT IN UNLICENSED SPECTRUM

#2
20260059551
2026-02-26

TECHNIQUES FOR JOINT COMMUNICATION AND RADAR SIGNALS IN WIRELESS COMMUNICATIONS

#3
20250393016
2025-12-25

AUTOMATIC GAIN CONTROL (AGC) TRAINING FOR SIDELINK POSITIONING REFERENCE SIGNALS (SL-PRS)

#4
20250184004
2025-06-05

AMPLIFICATION METHOD IN A PON ACCESS NETWORK, COMPUTER PROGRAM PRODUCT, CORRESPONDING OPTICAL LINE TERMINATION DEVICE

#5
20230318733
2023-10-05

OPTICAL AMPLIFICATION APPARATUS, AND MODE DIVISION MULTIPLEXING SYSTEM INCLUDING OPTICAL AMPLIFICATION APPARATUS

#6
20220216887
2022-07-07

Gain control method and apparatus

#7
20200274619
2020-08-27

Method and device for amplifying uplink light of passive optical network, and storage medium

#8
20190372672
2019-12-05

Optical power and gain detection apparatus and method for optical amplifier in burst mode

#9
20190131758
2019-05-02

Method for realizing precise target gain control for hybrid fibre amplifier, and hybrid fibre amplifier

#10
20160261087
2016-09-08

Optical amplifier

#11
20150341117
2015-11-26

Method of configuring an optical communication network configured for co-propagating Raman amplification and an optical communication network element

#12
20150188287
2015-07-02

Optical amplifier with self-adjusting gain based on reflected feedback

#13
20140314405
2014-10-23

Method and apparatus for equalizing link performance

#14
20140285874
2014-09-25

Method for controlling signal gain of a raman amplifier

#15
20140169787
2014-06-19

Optical amplifier controller

#16
20140105601
2014-04-17

Optical module used in optical communication systems, method of updating firmware of optical module used in optical communication systems, and trouble tracing system

#17
20140043675
2014-02-13

Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied

#18
20130242379
2013-09-19

Method for controlling signal gain of a Raman amplifier

#19
20130140443
2013-06-06

Optical amplifier that controls level of optical output signal

#20
20130045007
2013-02-21

Multi-wavelength light amplifier

#21
20120327505
2012-12-27

Method of performing target Raman gain locking and Raman fiber amplifier

#22
20120262780
2012-10-18

Multimode optical amplifier with close-loop modal gain control

#23
20120243076
2012-09-27

Method, apparatus, and system for amplifying a burst optical signal

#24
20120229887
2012-09-13

Optical fiber amplifier with improved performance

#25
20120177369
2012-07-12

Automatic power adjustment system and method for optical network system

#26
20120106959
2012-05-03

Method and equipment for adjusting power amplification

#27
20120099186
2012-04-26

Optical amplification device and method

#28
20110262140
2011-10-27

Multi-wavelength light amplifier

#29
20110205620
2011-08-25

Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied

#30
20110116161
2011-05-19

Optical amplifier, control circuit, and optical amplifier control method

#31
20110085230
2011-04-14

Method for controlling an erbium doped fiber amplifier (EDFA) and amplifier arrangement

#32
20110063721
2011-03-17

Optical amplifier and optical amplification method

#33
20110058821
2011-03-10

Optical transmission apparatus, optical transmission system, and optical transmission method

#34
20100098422
2010-04-22

OPTICAL COMMUNICATION APPARATUS AND METHOD OF CONTROLLING SEMICONDUCTOR OPTICAL AMPLIFIER

#35
20100046963
2010-02-25

OPTICAL REGENERATING APPARATUS AND OPTICAL REGENERATING METHOD

#36
20090303577
2009-12-10

Optical amplifier configuration

#37
20090303575
2009-12-10

Self-adapting feed forward control apparatus and method in an optical amplifier

#38
20090225403
2009-09-10

Multi-wavelength light amplifier

#39
20090195863
2009-08-06

Optical amplification apparatus, optical communication apparatus, and optical communication method

#40
20090086310
2009-04-02

Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied

#41
20080253763
2008-10-16

Optical transmission apparatus

#42
20080225385
2008-09-18

Multi-stage optical amplifier and method of controlling the same

#43
20080218848
2008-09-11

Optical amplifier, optical amplifier controller and control method of the same

#44
20080205460
2008-08-28

Optical amplifying apparatus

#45
20080130098
2008-06-05

Control of a light source providing excitation light

#46
20070269209
2007-11-22

Determination of the amplified spontaneous emission in an optical fibre amplifier

#47
20070264014
2007-11-15

Variable gain optical amplifiers

#48
20070201876
2007-08-30

Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied

#49
20070177254
2007-08-02

Method and system for improved eye protection safety of high output power lumped optical amplifiers

#50
20070172189
2007-07-26

Semiconductor Raman variable optical attenuator/amplifier and equalizer

#51
20070165299
2007-07-19

MULTI-WAVELENGTH LIGHT AMPLIFIER

#52
20070103767
2007-05-10

Method for controlling the pump power of an optical amplifier

#53
20070070492
2007-03-29

Controlling apparatus for optical amplifier and controlling method thereof

#54
20060198016
2006-09-07

Optical communications system with fiber break detection in the presence of Raman amplification

#55
20060127101
2006-06-15

Optical transmission device using a wide input dynamic range optical amplifier

#56
20060098270
2006-05-11

Optical output power automatic attenuation circuit for optical communication apparatus

#57
20060082868
2006-04-20

Optical amplifying apparatus, optical transmission system and method of adjusting optical transmission loss

#58
20060044646
2006-03-02

Optical amplification device, raman amplifier, optical wavelength-division multiplex transmission system and optical wavelength-division multiplex transmission method

#59
20060044645
2006-03-02

Method of operating an optical amplifier and optical amplifier

#60
20050270635
2005-12-08

Optical amplifier using reflection-type variable optical attenuator for feedback

#61
20050225844
2005-10-13

Optical amplifier apparatus

#62
20050213990
2005-09-29

Gain monitoring method for optical amplifier and apparatus thereof

#63
20050141079
2005-06-30

Optical transmission apparatus

#64
20050116147
2005-06-02

Controlling apparatus for optical amplifier and controlling method thereof

#65
20050046927
2005-03-03

Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied

#66
20050045810
2005-03-03

Method and system for controlling a secondary amplifier with a primary amplifier in an optical network

#67
16593748
2020-10-13

Optical amplifiers that support gain clamping and optionally power loading

#68
15090056
2017-08-15

Transceiver system supporting transmitter self calibration and methods of performing the same