YUICHI AKIYAMA

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical transmission device and optical transmission system
- Patent number 11,165,502
- Issue date Nov 2, 2021
- Fujitsu Limited
- Yi Ge
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reception device and method of detecting supervisory control signal
- Patent number 10,873,410
- Issue date Dec 22, 2020
- Fujitsu Limited
- Yi Ge
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and skew compensation method
- Patent number 10,498,459
- Issue date Dec 3, 2019
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission system and method
- Patent number 10,419,263
- Issue date Sep 17, 2019
- Fujitsu Limited
- Yi Ge
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and control method for optical transmitter
- Patent number 10,341,027
- Issue date Jul 2, 2019
- Fujitsu Limited
- Guoxiu Huang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical reception apparatus, optical transmission apparatus, optica...
- Patent number 10,219,049
- Issue date Feb 26, 2019
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital signal processing circuit and signal processing device that...
- Patent number 10,090,927
- Issue date Oct 2, 2018
- Fujitsu Limited
- Hisao Nakashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and control method of optical transmitter
- Patent number 10,063,322
- Issue date Aug 28, 2018
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device, optical modulator, and bias control me...
- Patent number 9,989,786
- Issue date Jun 5, 2018
- Fujitsu Limited
- Tomohiro Kaneoka
- G02 - OPTICS
Information Patent Grant
Transmission apparatus, reception apparatus and modulation method
- Patent number 9,887,798
- Issue date Feb 6, 2018
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter, optical transmission system and optical commun...
- Patent number 9,859,985
- Issue date Jan 2, 2018
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and method for controlling bias of optical modu...
- Patent number 9,853,739
- Issue date Dec 26, 2017
- Fujitsu Limited
- Hisao Nakashima
- G02 - OPTICS
Information Patent Grant
Optical transmitter, method for controlling optical modulator, and...
- Patent number 9,843,396
- Issue date Dec 12, 2017
- Fujitsu Limited
- Yuichi Akiyama
- G02 - OPTICS
Information Patent Grant
Optical transmission device, transmission system, and transmission...
- Patent number 9,787,396
- Issue date Oct 10, 2017
- Fujitsu Limited
- Kiichi Sugitani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and detection apparatus
- Patent number 9,667,344
- Issue date May 30, 2017
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device, nonlinear distortion compensation meth...
- Patent number 9,654,224
- Issue date May 16, 2017
- Fujitsu Limited
- Tomofumi Oyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and waveform distortion correction method
- Patent number 9,654,216
- Issue date May 16, 2017
- Fujitsu Limited
- Hisao Nakashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device, method of optical transmission, and no...
- Patent number 9,564,975
- Issue date Feb 7, 2017
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal transmitter
- Patent number 9,419,720
- Issue date Aug 16, 2016
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and bias control method of optical modulator
- Patent number 9,350,455
- Issue date May 24, 2016
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and method for controlling bias for optical mod...
- Patent number 9,240,838
- Issue date Jan 19, 2016
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and modulated optical signal generating method
- Patent number 9,130,680
- Issue date Sep 8, 2015
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter, control method for the same, and optical trans...
- Patent number 9,014,572
- Issue date Apr 21, 2015
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and optical transmission method
- Patent number 8,879,925
- Issue date Nov 4, 2014
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitting apparatus, optical receiving apparatus, and op...
- Patent number 8,867,927
- Issue date Oct 21, 2014
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for controlling polarization multiplexed optical signal
- Patent number 8,731,409
- Issue date May 20, 2014
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical device and optical modulation method
- Patent number 8,582,980
- Issue date Nov 12, 2013
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and control method therefor
- Patent number 8,582,981
- Issue date Nov 12, 2013
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polarized-wave-multiplexing optical transmitter and control method...
- Patent number 8,565,616
- Issue date Oct 22, 2013
- Fujitsu Limited
- Toshiki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal transmitter and method for controlling polarization...
- Patent number 8,472,810
- Issue date Jun 25, 2013
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
WAVELENGTH CONVERTER, OPTICAL COMMUNICATION SYSTEM, AND METHOD FOR...
- Publication number 20210103200
- Publication date Apr 8, 2021
- Fujitsu Limited
- GOJI NAKAGAWA
- G02 - OPTICS
Information Patent Application
OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION SYSTEM
- Publication number 20200036446
- Publication date Jan 30, 2020
- Fujitsu Limited
- Yi Ge
- G02 - OPTICS
Information Patent Application
OPTICAL TRANSMITTER AND CONTROL METHOD FOR OPTICAL TRANSMITTER
- Publication number 20190028205
- Publication date Jan 24, 2019
- Fujitsu Limited
- GUOXIU HUANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMISSION SYSTEM AND METHOD
- Publication number 20190020531
- Publication date Jan 17, 2019
- FUJITSU LIMITED
- Yi Ge
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEPTION APPARATUS, OPTICAL TRANSMISSION APPARATUS, OPTICA...
- Publication number 20180376226
- Publication date Dec 27, 2018
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND SKEW COMPENSATION METHOD
- Publication number 20180367220
- Publication date Dec 20, 2018
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RECEPTION DEVICE AND METHOD OF DETECTING SUPERVISORY CONTROL SIGNAL
- Publication number 20180248643
- Publication date Aug 30, 2018
- Fujitsu Limited
- Yi Ge
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND COMMUNICATION METHOD...
- Publication number 20180175933
- Publication date Jun 21, 2018
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DIGITAL SIGNAL PROCESSING CIRCUIT AND SIGNAL PROCESSING DEVICE THAT...
- Publication number 20170310394
- Publication date Oct 26, 2017
- Fujitsu Limited
- Hisao Nakashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE, OPTICAL MODULATOR, AND BIAS CONTROL ME...
- Publication number 20170293165
- Publication date Oct 12, 2017
- Fujitsu Limited
- Tomohiro Kaneoka
- G02 - OPTICS
Information Patent Application
OPTICAL TRANSMITTER AND CONTROL METHOD OF OPTICAL TRANSMITTER
- Publication number 20170163347
- Publication date Jun 8, 2017
- Fujitsu Limited
- YUICHI AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMISSION APPARATUS, RECEPTION APPARATUS AND MODULATION METHOD
- Publication number 20170134115
- Publication date May 11, 2017
- Fujitsu Limited
- Yoshitaka NOMURA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE, TRANSMISSION SYSTEM, AND TRANSMISSION...
- Publication number 20170026114
- Publication date Jan 26, 2017
- Fujitsu Limited
- KIICHI SUGITANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER, OPTICAL TRANSMISSION SYSTEM AND OPTICAL COMMUN...
- Publication number 20160269123
- Publication date Sep 15, 2016
- Fujitsu Limited
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER, METHOD FOR CONTROLLING OPTICAL MODULATOR, AND...
- Publication number 20160105244
- Publication date Apr 14, 2016
- Fujitsu Limited
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND WAVEFORM DISTORTION CORRECTION METHOD
- Publication number 20160099776
- Publication date Apr 7, 2016
- Fujitsu Limited
- Hisao NAKASHIMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE, NONLINEAR DISTORTION COMPENSATION METH...
- Publication number 20160065312
- Publication date Mar 3, 2016
- Fujitsu Limited
- Tomofumi Oyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING BIAS OF OPTICAL MODU...
- Publication number 20160036533
- Publication date Feb 4, 2016
- Fujitsu Limited
- Hisao Nakashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION APPARATUS AND DETECTION APPARATUS
- Publication number 20160020853
- Publication date Jan 21, 2016
- Fujitsu Limited
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL SIGNAL TRANSMITTER
- Publication number 20150229406
- Publication date Aug 13, 2015
- Fujitsu Limited
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND BIAS CONTROL METHOD OF OPTICAL MODULATOR
- Publication number 20140334829
- Publication date Nov 13, 2014
- YUICHI AKIYAMA
- G02 - OPTICS
Information Patent Application
OPTICAL TRANSMITTER AND MODULATED OPTICAL SIGNAL GENERATING METHOD
- Publication number 20140212136
- Publication date Jul 31, 2014
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE, METHOD OF OPTICAL TRANSMISSION, AND NO...
- Publication number 20140140707
- Publication date May 22, 2014
- Fujitsu Limited
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR CONTROLLING POLARIZATION MULTIPLEXED OPTICAL SIGNAL
- Publication number 20130279913
- Publication date Oct 24, 2013
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING BIAS FOR OPTICAL MOD...
- Publication number 20130202315
- Publication date Aug 8, 2013
- Fujitsu Limited
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER, CONTROL METHOD FOR THE SAME, AND OPTICAL TRANS...
- Publication number 20120308240
- Publication date Dec 6, 2012
- Fujitsu Limited
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION METHOD
- Publication number 20120148260
- Publication date Jun 14, 2012
- FUJITSU LIMITED
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DQPSK OPTICAL RECEIVER
- Publication number 20120141145
- Publication date Jun 7, 2012
- FUJITSU LIMITED
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTING APPARATUS, OPTICAL RECEIVING APPARATUS, AND OP...
- Publication number 20120082465
- Publication date Apr 5, 2012
- FUJITSU LIMITED
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
POLARIZED-WAVE-MULTIPLEXING OPTICAL TRANSMITTER AND CONTROL METHOD...
- Publication number 20110222853
- Publication date Sep 15, 2011
- FUJITSU LIMITED
- Toshiki TANAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

YUICHI AKIYAMA

Person

Patents Grantslast 30 patents

Optical transmission device and optical transmission system

Reception device and method of detecting supervisory control signal

Optical transmitter and skew compensation method

Transmission system and method

Optical transmitter and control method for optical transmitter

Optical reception apparatus, optical transmission apparatus, optica...

Digital signal processing circuit and signal processing device that...

Optical transmitter and control method of optical transmitter

Optical transmission device, optical modulator, and bias control me...

Transmission apparatus, reception apparatus and modulation method

Optical transmitter, optical transmission system and optical commun...

Optical transmitter and method for controlling bias of optical modu...

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

Optical transmission device, transmission system, and transmission...

Optical transmission apparatus and detection apparatus

Optical transmission device, nonlinear distortion compensation meth...

Optical transmitter and waveform distortion correction method

Optical transmission device, method of optical transmission, and no...

Optical signal transmitter

Optical transmitter and bias control method of optical modulator

Optical transmitter and method for controlling bias for optical mod...

Optical transmitter and modulated optical signal generating method

Optical transmitter, control method for the same, and optical trans...

Optical transmitter and optical transmission method

Optical transmitting apparatus, optical receiving apparatus, and op...

Method for controlling polarization multiplexed optical signal

Optical device and optical modulation method

Optical transmitter and control method therefor

Polarized-wave-multiplexing optical transmitter and control method...

Optical signal transmitter and method for controlling polarization...

Patents Applicationslast 30 patents

WAVELENGTH CONVERTER, OPTICAL COMMUNICATION SYSTEM, AND METHOD FOR...

OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION SYSTEM

OPTICAL TRANSMITTER AND CONTROL METHOD FOR OPTICAL TRANSMITTER

TRANSMISSION SYSTEM AND METHOD

OPTICAL RECEPTION APPARATUS, OPTICAL TRANSMISSION APPARATUS, OPTICA...

OPTICAL TRANSMITTER AND SKEW COMPENSATION METHOD

RECEPTION DEVICE AND METHOD OF DETECTING SUPERVISORY CONTROL SIGNAL

COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND COMMUNICATION METHOD...

DIGITAL SIGNAL PROCESSING CIRCUIT AND SIGNAL PROCESSING DEVICE THAT...

OPTICAL TRANSMISSION DEVICE, OPTICAL MODULATOR, AND BIAS CONTROL ME...

OPTICAL TRANSMITTER AND CONTROL METHOD OF OPTICAL TRANSMITTER

TRANSMISSION APPARATUS, RECEPTION APPARATUS AND MODULATION METHOD

OPTICAL TRANSMISSION DEVICE, TRANSMISSION SYSTEM, AND TRANSMISSION...

OPTICAL TRANSMITTER, OPTICAL TRANSMISSION SYSTEM AND OPTICAL COMMUN...

OPTICAL TRANSMITTER, METHOD FOR CONTROLLING OPTICAL MODULATOR, AND...

OPTICAL TRANSMITTER AND WAVEFORM DISTORTION CORRECTION METHOD

OPTICAL TRANSMISSION DEVICE, NONLINEAR DISTORTION COMPENSATION METH...

OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING BIAS OF OPTICAL MODU...

OPTICAL TRANSMISSION APPARATUS AND DETECTION APPARATUS

OPTICAL SIGNAL TRANSMITTER

OPTICAL TRANSMITTER AND BIAS CONTROL METHOD OF OPTICAL MODULATOR

OPTICAL TRANSMITTER AND MODULATED OPTICAL SIGNAL GENERATING METHOD

OPTICAL TRANSMISSION DEVICE, METHOD OF OPTICAL TRANSMISSION, AND NO...

METHOD FOR CONTROLLING POLARIZATION MULTIPLEXED OPTICAL SIGNAL

OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING BIAS FOR OPTICAL MOD...

OPTICAL TRANSMITTER, CONTROL METHOD FOR THE SAME, AND OPTICAL TRANS...

OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION METHOD

DQPSK OPTICAL RECEIVER

OPTICAL TRANSMITTING APPARATUS, OPTICAL RECEIVING APPARATUS, AND OP...

POLARIZED-WAVE-MULTIPLEXING OPTICAL TRANSMITTER AND CONTROL METHOD...