Inventor
AKIYAMA YUICHI
JP74 patents
⚠️ This page may combine multiple inventors who share the name “AKIYAMA YUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
30 patentsUS9419720B2Aug 16, 2016
Optical signal transmitter
FUJITSU LTD57 citations98
US7817923B2Oct 19, 2010
Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them
FUJITSU LTD55 citations98
US6661974B1Dec 9, 2003
Optical transmitter and optical transmission system
FUJITSU LTD102 citations98
US6728491B1Apr 27, 2004
Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method
FUJITSU LTD44 citations96
US7848659B2Dec 7, 2010
Optical transmitting apparatus and optical communication system
FUJITSU LTD22 citations93
US7773283B2Aug 10, 2010
Optical modulation device and optical modulation method
FUJITSU LTD16 citations93
US7657190B2Feb 2, 2010
Optical transmitter apparatus
FUJITSU LTD35 citations93
US7035548B2Apr 25, 2006
Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method
FUJITSU LTD16 citations93
US6262828B1Jul 17, 2001
Method and apparatus of driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line
FUJITSU LTD23 citations93
US5982530ANov 9, 1999
Apparatus for driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line
FUJITSU LTD29 citations93
US5973816AOct 26, 1999
Method and apparatus of driving an optical modulator to measure, and compensation for dispersion in an optical transmission line
FUJITSU LTD20 citations93
US8364038B2Jan 29, 2013
Polarization multiplexed optical transmitter and method for controlling polarization multiplexed optical signal
FUJITSU LTD10 citations84
US7936998B2May 3, 2011
Optical transmitter apparatus
FUJITSU LTD10 citations84
US7933519B2Apr 26, 2011
Optical cross-connect using wavelength selective switches
FUJITSU LTD9 citations84
US7907324B2Mar 15, 2011
Optical modulator and controlling method and apparatus thereof
FUJITSU LTD12 citations84
US7853148B2Dec 14, 2010
Optical add/drop multiplexer
FUJITSU LTD10 citations84
US7792428B2Sep 7, 2010
Optical add/drop multiplexer
FUJITSU LTD12 citations84
US7711270B2May 4, 2010
Optical node and optical add/drop multiplexer
FUJITSU LTD8 citations84
US7603007B2Oct 13, 2009
Quadrature phase-shift keying modulator and phase shift amount controlling method for the same
FUJITSU LTD11 citations84
US7418211B2Aug 26, 2008
Control apparatus and control method for optical modulator
FUJITSU LTD12 citations84
US7006770B2Feb 28, 2006
Optical receiving station, optical communication system, and dispersion controlling method
FUJITSU LTD12 citations84
US7505414B2Mar 17, 2009
Network designing device and computer-readable medium
FUJITSU LTD7 citations74
US6809849B2Oct 26, 2004
Control apparatus and control method for an optical method
FUJITSU LTD12 citations74
US10063322B2Aug 28, 2018
Optical transmitter and control method of optical transmitter
FUJITSU LTD2 citations73
US9654216B2May 16, 2017
Optical transmitter and waveform distortion correction method
FUJITSU LTD4 citations73
US9564975B2Feb 7, 2017
Optical transmission device, method of optical transmission, and non-transitory computer-readable medium
FUJITSU LTD4 citations73
US9350455B2May 24, 2016
Optical transmitter and bias control method of optical modulator
FUJITSU LTD3 citations73
US9887798B2Feb 6, 2018
Transmission apparatus, reception apparatus and modulation method
FUJITSU LTD2 citations72
US11165502B2Nov 2, 2021
Optical transmission device and optical transmission system
FUJITSU LTD1 citations63
US9240838B2Jan 19, 2016
Optical transmitter and method for controlling bias for optical modulator
FUJITSU LTD2 citations63
AKIYAMA YUICHI
9 patentsUS8472810B2Jun 25, 2013
Optical signal transmitter and method for controlling polarization multiplexed optical signal
AKIYAMA YUICHI68 citations97
US8879925B2Nov 4, 2014
Optical transmitter and optical transmission method
AKIYAMA YUICHI22 citations92
US8582981B2Nov 12, 2013
Optical transmitter and control method therefor
AKIYAMA YUICHI28 citations92
US8867927B2Oct 21, 2014
Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them
AKIYAMA YUICHI7 citations84
US8457503B2Jun 4, 2013
Optical transmitter apparatus
AKIYAMA YUICHI12 citations84
US8145072B2Mar 27, 2012
DQPSK optical receiver
AKIYAMA YUICHI8 citations84
US8121492B2Feb 21, 2012
Optical transmitting apparatus
AKIYAMA YUICHI7 citations84
US9014572B2Apr 21, 2015
Optical transmitter, control method for the same, and optical transmission system
AKIYAMA YUICHI6 citations73
US8131152B2Mar 6, 2012
Optical add/drop multiplexer
AKIYAMA YUICHI5 citations73
TANAKA TOSHIKI
5 patentsUS8412047B2Apr 2, 2013
Polarization multiplexed light transmitter and control method thereof
TANAKA TOSHIKI57 citations94
US8565616B2Oct 22, 2013
Polarized-wave-multiplexing optical transmitter and control method of polarized-wave-multiplexed optical signal
TANAKA TOSHIKI13 citations84
US8400702B2Mar 19, 2013
Optical modulation device and optical modulation method
TANAKA TOSHIKI11 citations84
US8145071B2Mar 27, 2012
Electrical-dispersion compensating apparatus, optical receiving apparatus, and optical receiving method
TANAKA TOSHIKI10 citations84
US8145069B2Mar 27, 2012
Optical transmitter
TANAKA TOSHIKI16 citations84
ODA SHOICHIRO
1 patentMAZDA MOTOR
1 patentMAZDA MOTOR CORP AND NALDEC CO
1 patentNISHIHARA MASATO
1 patentMITSUBISHI ELECTRIC CORP
1 patentSUMITOMO WIRING SYSTEMS
1 patentShowing the top 50 of 74 patents by PatentIndex Score.