Hiroshi Ogiwara

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Signal processing device, transmitting and receiving device, and si...
- Patent number 10,374,717
- Issue date Aug 6, 2019
- Fujitsu Limited
- Tomohiro Kaneoka
- 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
Optical receiver and frequency offset correction method
- Patent number 9,525,494
- Issue date Dec 20, 2016
- Fujitsu Limited
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communications apparatus, multiplex communications apparatus, commu...
- Patent number 9,191,145
- Issue date Nov 17, 2015
- Fujitsu Limited
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical dispersion compensator, optical transmission apparatus, opt...
- Patent number 8,442,404
- Issue date May 14, 2013
- Fujitsu Limited
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying apparatus which routes pumping light to a raman...
- Patent number 7,079,313
- Issue date Jul 18, 2006
- Fujitsu Limited
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying and repeating method and optical amplifying and...
- Patent number 7,068,945
- Issue date Jun 27, 2006
- Fujitsu Limited
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SIGNAL PROCESSING DEVICE, TRANSMITTING AND RECEIVING DEVICE, AND SI...
- Publication number 20180375582
- Publication date Dec 27, 2018
- Fujitsu Limited
- Tomohiro Kaneoka
- 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 METHOD OF CONTROLLING OPTICAL TRANSMITTER
- Publication number 20170187465
- Publication date Jun 29, 2017
- Fujitsu Limited
- Tomohiro Kaneoka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVER AND FREQUENCY OFFSET CORRECTION METHOD
- Publication number 20140286650
- Publication date Sep 25, 2014
- Fujitsu Limited
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communications apparatus, multiplex communications apparatus, commu...
- Publication number 20120106969
- Publication date May 3, 2012
- NTT Electronics Corporation
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL DISPERSION COMPENSATOR, OPTICAL TRANSMISSION APPARATUS, OPT...
- Publication number 20100247110
- Publication date Sep 30, 2010
- FUJITSU LIMITED
- Hiroshi OGIWARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifying and repeating method and optical amplifying and...
- Publication number 20050226614
- Publication date Oct 13, 2005
- FUJITSU LIMITED
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifying apparatus
- Publication number 20040091003
- Publication date May 13, 2004
- FUJITSU LIMITED
- Hiroshi Ogiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hiroshi Ogiwara

Person

Patents Grantslast 30 patents

Signal processing device, transmitting and receiving device, and si...

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

Optical receiver and frequency offset correction method

Communications apparatus, multiplex communications apparatus, commu...

Optical dispersion compensator, optical transmission apparatus, opt...

Optical amplifying apparatus which routes pumping light to a raman...

Optical amplifying and repeating method and optical amplifying and...

Patents Applicationslast 30 patents

SIGNAL PROCESSING DEVICE, TRANSMITTING AND RECEIVING DEVICE, AND SI...

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

OPTICAL TRANSMITTER AND METHOD OF CONTROLLING OPTICAL TRANSMITTER

OPTICAL RECEIVER AND FREQUENCY OFFSET CORRECTION METHOD

Communications apparatus, multiplex communications apparatus, commu...

OPTICAL DISPERSION COMPENSATOR, OPTICAL TRANSMISSION APPARATUS, OPT...

Optical amplifying and repeating method and optical amplifying and...

Optical amplifying apparatus