Tetsuya Sakai

Person

Sakura, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Fiber laser
- Patent number 8,548,013
- Issue date Oct 1, 2013
- Fujikara Ltd.
- Tomoharu Kitabayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier, fiber laser, and method of eliminating reflected...
- Patent number 8,004,753
- Issue date Aug 23, 2011
- Fujikura Ltd.
- Michihiro Nakai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical pumping device, optical amplifier, fiber laser, and multico...
- Patent number 7,840,107
- Issue date Nov 23, 2010
- Fujikura Ltd.
- Shoji Tanigawa
- G02 - OPTICS
Information Patent Grant
Multi-port coupler, optical amplifier, and fiber laser
- Patent number 7,492,993
- Issue date Feb 17, 2009
- Fujikura Ltd.
- Michihiro Nakai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
End face structure of optical fiber, optical fiber laser, and laser...
- Patent number 7,409,122
- Issue date Aug 5, 2008
- Fujikura Ltd.
- Tomoharu Kitabayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber laser and laser light emitting method
- Patent number 7,154,919
- Issue date Dec 26, 2006
- Fujikura Ltd.
- Yasuyuki Okada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for exciting light for optical amplification medium fiber, s...
- Patent number 7,065,279
- Issue date Jun 20, 2006
- Fujikura Ltd.
- Kensuke Shima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber coupling structure and method for coupling optical fi...
- Patent number 7,027,692
- Issue date Apr 11, 2006
- Fujikura Ltd.
- Tomoharu Kitabayashi
- G02 - OPTICS
Information Patent Grant
Method for detecting disengagement of an optical fiber, an optical...
- Patent number 7,002,735
- Issue date Feb 21, 2006
- Fujikura Ltd.
- Yasuko Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier, method for compensating for temperature dependen...
- Patent number 6,975,446
- Issue date Dec 13, 2005
- Fujikura Ltd.
- Yasushi Takeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polarization maintaining optical fiber amplifier and optical amplifier
- Patent number 6,597,494
- Issue date Jul 22, 2003
- Fujikura Ltd.
- Takeshi Segi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gain tilt free optical fiber amplifier in a wide dynamic gain range
- Patent number 6,563,628
- Issue date May 13, 2003
- Fujikura Ltd.
- Tomoharu Kitabayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier utilizing rare earth element-doped optical fibers...
- Patent number 6,542,288
- Issue date Apr 1, 2003
- Fujikura Ltd.
- Takeshi Segi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber grating and manufacturing method thereof
- Patent number 6,442,313
- Issue date Aug 27, 2002
- Fujikura Ltd.
- Ryozo Yamauchi
- G02 - OPTICS
Information Patent Grant
Optical fiber grating and manufacturing method therefor
- Patent number 6,298,183
- Issue date Oct 2, 2001
- Fujikura Ltd.
- Ryozo Yamauchi
- G02 - OPTICS
Information Patent Grant
Method of making an optical waveguide grating with two dissimilar i...
- Patent number 5,996,375
- Issue date Dec 7, 1999
- Michihiro Nakai
- G02 - OPTICS
Information Patent Grant
Optical waveguide grating and production method therefor
- Patent number 5,949,934
- Issue date Sep 7, 1999
- Fujikura, Ltd.
- Kensuke Shima
- G02 - OPTICS
Information Patent Grant
Optical filter with planar optical waveguide having periodically va...
- Patent number 5,930,437
- Issue date Jul 27, 1999
- Fujikura Ltd.
- Michihiro Nakai
- G02 - OPTICS
Information Patent Grant
Optical fiber filter
- Patent number 5,732,170
- Issue date Mar 24, 1998
- Fujikura, Ltd.
- Satoshi Okude
- G02 - OPTICS
Information Patent Grant
Erbium-doped silica optical fiber preform
- Patent number 5,526,459
- Issue date Jun 11, 1996
- Fujikura Ltd.
- Daiichirou Tanaka
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Solution doping of a silica preform with erbium, aluminum and phosp...
- Patent number 5,474,588
- Issue date Dec 12, 1995
- Fujikura Ltd.
- Daiichirou Tanaka
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber having a core with a repeatedly changing constitution...
- Patent number 5,267,339
- Issue date Nov 30, 1993
- Fujikura Ltd.
- Ryozo Yamauchi
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL AMPLIFIER, FIBER LASER, AND METHOD OF ELIMINATING REFLECTED...
- Publication number 20100097689
- Publication date Apr 22, 2010
- FUJIKURA LTD.
- Michihiro Nakai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FIBER LASER
- Publication number 20090274175
- Publication date Nov 5, 2009
- FUJIKURA LTD.
- Tomoharu KITABAYASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL PUMPING DEVICE, OPTICAL AMPLIFIER, FIBER LASER, AND MULTICO...
- Publication number 20080018989
- Publication date Jan 24, 2008
- FUJIKURA LTD.
- Shoji Tanigawa
- G02 - OPTICS
Information Patent Application
MULTI-PORT COUPLER, OPTICAL AMPLIFIER, AND FIBER LASER
- Publication number 20070280597
- Publication date Dec 6, 2007
- FUJIKURA LTD.
- Michihiro NAKAI
- G02 - OPTICS
Information Patent Application
End face structure of optical fiber, optical fiber laser, and laser...
- Publication number 20050244101
- Publication date Nov 3, 2005
- FUJIKURA LTD.
- Tomoharu Kitabayashi
- G02 - OPTICS
Information Patent Application
Method for detecting disengagement of an optical fiber, an optical...
- Publication number 20050200944
- Publication date Sep 15, 2005
- FUJIKURA LTD.
- Yasuko Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical fiber coupling structure and method for coupling optical fi...
- Publication number 20050175289
- Publication date Aug 11, 2005
- FUJIKURA LTD.
- Tomoharu Kitabayashi
- G02 - OPTICS
Information Patent Application
Rare-earth-doped fiber and an optical fiber laser using the same
- Publication number 20040264513
- Publication date Dec 30, 2004
- FUJIKURA LTD.
- Kensuke Shima
- G02 - OPTICS
Information Patent Application
Optical fiber laser and laser light emitting method
- Publication number 20040240488
- Publication date Dec 2, 2004
- FUJIKURA LTD.
- Yasuyuki Okada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method for exciting light for optical amplification medium fiber, s...
- Publication number 20040240819
- Publication date Dec 2, 2004
- FUJIKURA LTD.
- Kensuke Shima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplifier, method for compensating for temperature dependen...
- Publication number 20040042062
- Publication date Mar 4, 2004
- FUJIKURA LTD.
- Yasushi Takeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Polarization maintaining optical fiber amplifier and optical amplifier
- Publication number 20030021012
- Publication date Jan 30, 2003
- FUJIKURA LTD.
- Takeshi Segi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical fiber grating and manufacturing method thereof
- Publication number 20010019643
- Publication date Sep 6, 2001
- Ryozo Yamauchi
- G02 - OPTICS
Information Patent Application
Optical fiber amplifier
- Publication number 20010017728
- Publication date Aug 30, 2001
- Tomoharu Kitabayashi
- H01 - BASIC ELECTRIC ELEMENTS

Tetsuya Sakai

Person

Patents Grantslast 30 patents

Fiber laser

Optical amplifier, fiber laser, and method of eliminating reflected...

Optical pumping device, optical amplifier, fiber laser, and multico...

Multi-port coupler, optical amplifier, and fiber laser

End face structure of optical fiber, optical fiber laser, and laser...

Optical fiber laser and laser light emitting method

Method for exciting light for optical amplification medium fiber, s...

Optical fiber coupling structure and method for coupling optical fi...

Method for detecting disengagement of an optical fiber, an optical...

Optical amplifier, method for compensating for temperature dependen...

Polarization maintaining optical fiber amplifier and optical amplifier

Gain tilt free optical fiber amplifier in a wide dynamic gain range

Optical amplifier utilizing rare earth element-doped optical fibers...

Optical fiber grating and manufacturing method thereof

Optical fiber grating and manufacturing method therefor

Method of making an optical waveguide grating with two dissimilar i...

Optical waveguide grating and production method therefor

Optical filter with planar optical waveguide having periodically va...

Optical fiber filter

Erbium-doped silica optical fiber preform

Solution doping of a silica preform with erbium, aluminum and phosp...

Optical fiber having a core with a repeatedly changing constitution...

Patents Applicationslast 30 patents

OPTICAL AMPLIFIER, FIBER LASER, AND METHOD OF ELIMINATING REFLECTED...

FIBER LASER

OPTICAL PUMPING DEVICE, OPTICAL AMPLIFIER, FIBER LASER, AND MULTICO...

MULTI-PORT COUPLER, OPTICAL AMPLIFIER, AND FIBER LASER

End face structure of optical fiber, optical fiber laser, and laser...

Method for detecting disengagement of an optical fiber, an optical...

Optical fiber coupling structure and method for coupling optical fi...

Rare-earth-doped fiber and an optical fiber laser using the same

Optical fiber laser and laser light emitting method

Method for exciting light for optical amplification medium fiber, s...

Optical amplifier, method for compensating for temperature dependen...

Polarization maintaining optical fiber amplifier and optical amplifier

Optical fiber grating and manufacturing method thereof

Optical fiber amplifier