Yuichi Kawahata

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Control method of wavelength dispersion compensator, and wavelength...
- Patent number 7,418,206
- Issue date Aug 26, 2008
- Fujitsu Limited
- Yuichi Kawahata
- G02 - OPTICS
Information Patent Grant
Chromatic dispersion compensation device and method
- Patent number 7,357,521
- Issue date Apr 15, 2008
- Fujitsu Limited
- Hirotomo Izumi
- G02 - OPTICS
Information Patent Grant
Transmission characteristics evaluation system and pseudo transmiss...
- Patent number 7,343,094
- Issue date Mar 11, 2008
- Fujitsu Limited
- Yuichi Kawahata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical component provided with demultiplexing function and wavelen...
- Patent number 7,302,189
- Issue date Nov 27, 2007
- Fujitsu Limited
- Yuichi Kawahata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Device using a virtually-imaged phased array (VIPA) with an improve...
- Patent number 7,200,297
- Issue date Apr 3, 2007
- Fujitsu Limited
- Yasuhiro Yamauchi
- G02 - OPTICS
Information Patent Grant
Mirror fixing method and optical apparatus
- Patent number 7,073,915
- Issue date Jul 11, 2006
- Fujitsu Limited
- Hideo Okada
- G02 - OPTICS
Information Patent Grant
Wavelength periodical filter
- Patent number 7,019,901
- Issue date Mar 28, 2006
- Fujitsu Limited
- Yuichi Kawahata
- G02 - OPTICS
Information Patent Grant
Dispersion compensator whose transmission band is flattened
- Patent number 6,909,537
- Issue date Jun 21, 2005
- Fujitsu Limited
- Yuichi Kawahata
- G02 - OPTICS
Information Patent Grant
Optical apparatus and device
- Patent number 6,900,940
- Issue date May 31, 2005
- Fujitsu Limited
- Nobuaki Mitamura
- G02 - OPTICS
Information Patent Grant
Optical device
- Patent number 6,894,851
- Issue date May 17, 2005
- Fujitsu Limited
- Yujin Yamazaki
- G02 - OPTICS
Information Patent Grant
Apparatus for variable wavelength dispersion and wavelength dispers...
- Patent number 6,646,805
- Issue date Nov 11, 2003
- Fujitsu Limited
- Nobuaki Mitamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Chromatic dispersion compensation device and method
- Publication number 20080304157
- Publication date Dec 11, 2008
- FUJITSU LIMITED
- Hirotomo Izumi
- G02 - OPTICS
Information Patent Application
Optical transmission apparatus, method for controlling optical tran...
- Publication number 20060007427
- Publication date Jan 12, 2006
- FUJITSU LIMITED
- Motoyoshi Sekiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Transmission characteristics evaluation system and pseudo transmiss...
- Publication number 20050180748
- Publication date Aug 18, 2005
- FUJITSU LIMITED
- Yuichi Kawahata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Control method of wavelength dispersion compensator, and wavelength...
- Publication number 20050047786
- Publication date Mar 3, 2005
- FUJITSU LIMITED
- Yuichi Kawahata
- G02 - OPTICS
Information Patent Application
Optical component provided with demultiplexing function and wavelen...
- Publication number 20050041973
- Publication date Feb 24, 2005
- FUJITSU LIMITED
- Yuichi Kawahata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Chromatic dispersion compensation device and method
- Publication number 20040184724
- Publication date Sep 23, 2004
- FUJITSU LIMITED
- Hirotomo Izumi
- G02 - OPTICS
Information Patent Application
Wavelength dispersion compensator and optical transmission apparatus
- Publication number 20040179279
- Publication date Sep 16, 2004
- FUJITSU LIMITED
- Yuichi Kawahata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mirror fixing method and optical apparatus
- Publication number 20040057127
- Publication date Mar 25, 2004
- FUJITSU LIMITED
- Hideo Okada
- G02 - OPTICS
Information Patent Application
Optical device
- Publication number 20040057115
- Publication date Mar 25, 2004
- FUJITSU LIMITED
- Yujin Yamazaki
- G02 - OPTICS
Information Patent Application
Optical device
- Publication number 20040057128
- Publication date Mar 25, 2004
- FUJITSU LIMITED
- Yujin Yamazaki
- G02 - OPTICS
Information Patent Application
Device using a virtually-imaged phased array (VIPA) with an improve...
- Publication number 20030185504
- Publication date Oct 2, 2003
- FUJITSU LIMITED
- Yasuhiro Yamauchi
- G02 - OPTICS
Information Patent Application
Dispersion compensator whose transmission band is flattened
- Publication number 20030147121
- Publication date Aug 7, 2003
- FUJITSU LIMITED
- Yuichi Kawahata
- G02 - OPTICS
Information Patent Application
Wavelength periodical filter
- Publication number 20030133192
- Publication date Jul 17, 2003
- FUJITSU LIMITED
- Yuichi Kawahata
- G02 - OPTICS
Information Patent Application
Optical device
- Publication number 20030128431
- Publication date Jul 10, 2003
- Nobuaki Mitamura
- G02 - OPTICS
Information Patent Application
Apparatus for variable wavelength dispersion and wavelength dispers...
- Publication number 20020122256
- Publication date Sep 5, 2002
- FUJITSU LIMITED
- Nobuaki Mitamura
- G02 - OPTICS

Yuichi Kawahata

Person

Patents Grantslast 30 patents

Control method of wavelength dispersion compensator, and wavelength...

Chromatic dispersion compensation device and method

Transmission characteristics evaluation system and pseudo transmiss...

Optical component provided with demultiplexing function and wavelen...

Device using a virtually-imaged phased array (VIPA) with an improve...

Mirror fixing method and optical apparatus

Wavelength periodical filter

Dispersion compensator whose transmission band is flattened

Optical apparatus and device

Optical device

Apparatus for variable wavelength dispersion and wavelength dispers...

Patents Applicationslast 30 patents

Chromatic dispersion compensation device and method

Optical transmission apparatus, method for controlling optical tran...

Transmission characteristics evaluation system and pseudo transmiss...

Control method of wavelength dispersion compensator, and wavelength...

Optical component provided with demultiplexing function and wavelen...

Chromatic dispersion compensation device and method

Wavelength dispersion compensator and optical transmission apparatus

Mirror fixing method and optical apparatus

Optical device

Optical device

Device using a virtually-imaged phased array (VIPA) with an improve...

Dispersion compensator whose transmission band is flattened

Wavelength periodical filter

Optical device

Apparatus for variable wavelength dispersion and wavelength dispers...