Youichi Akasaka

Person

Chiyoda-ku, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Raman amplifier, optical repeater, and Raman amplification method
- Patent number 9,281,654
- Issue date Mar 8, 2016
- Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and Raman amplification method
- Patent number 8,437,074
- Issue date May 7, 2013
- Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and Raman amplification method
- Patent number 7,692,852
- Issue date Apr 6, 2010
- The Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and raman amplification method
- Patent number 7,548,368
- Issue date Jun 16, 2009
- The Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and raman amplification method
- Patent number 6,775,057
- Issue date Aug 10, 2004
- The Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and Raman amplification method
- Patent number 6,654,162
- Issue date Nov 25, 2003
- The Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and Raman amplification method
- Patent number 6,646,787
- Issue date Nov 11, 2003
- The Furukawa Electric. Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and raman amplification method
- Patent number 6,636,344
- Issue date Oct 21, 2003
- The Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier, optical repeater, and raman amplification method
- Patent number 6,501,593
- Issue date Dec 31, 2002
- The Furukawa Electric Co., Ltd.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion shifted optical fiber
- Patent number 6,175,680
- Issue date Jan 16, 2001
- The Furukawa Electric Co. Ltd.
- Shinichi Arai
- G02 - OPTICS
Information Patent Grant
Wavelength division multiplex communication link for optical transm...
- Patent number 5,995,694
- Issue date Nov 30, 1999
- The Furukawa Electric Co., Ltd.
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Dispersion compensating optical fiber
- Patent number 5,887,104
- Issue date Mar 23, 1999
- The Furukawa Electric Co., Ltd.
- Ryuichi Sugizaki
- G02 - OPTICS
Information Patent Grant
Dispension shift optical fiber and wavelength division multiplex tr...
- Patent number 5,854,871
- Issue date Dec 29, 1998
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Stimulated brillouin scattering suppressed optical fiber
- Patent number 5,848,215
- Issue date Dec 8, 1998
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Dispersion compensating fiber and its manufacturing method
- Patent number 5,802,235
- Issue date Sep 1, 1998
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Dispersion compensating optical fiber
- Patent number 5,673,354
- Issue date Sep 30, 1997
- The Furukawa Electric Co. Ltd.
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Dispersion compensating optical fiber for wavelength multiplex tran...
- Patent number 5,568,583
- Issue date Oct 22, 1996
- Furukawa Electric Co., Ltd.
- Youichi Akasaka
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD
- Publication number 20130286468
- Publication date Oct 31, 2013
- FURUKAWA ELECTRIC CO., LTD.
- Youichi AKASAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD
- Publication number 20110141553
- Publication date Jun 16, 2011
- FURUKAWA ELECTRIC CO., LTD.
- Youichi AKASAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD
- Publication number 20100067099
- Publication date Mar 18, 2010
- The Furukawa Electric CO., LTD
- Youichi AKASAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD
- Publication number 20070247701
- Publication date Oct 25, 2007
- THE FURUKAWA ELECTRIC CO., LTD.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman amplifier, optical repeater, and raman amplification method
- Publication number 20040190909
- Publication date Sep 30, 2004
- THE FURUKAWA ELECTRIC CO., LTD.
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman amplifier, optical repeater, and raman amplification method
- Publication number 20030058524
- Publication date Mar 27, 2003
- THE FURUKAWA ELECTRIC CO., LTD.
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier, optical repeater, and Raman amplification method
- Publication number 20030053199
- Publication date Mar 20, 2003
- THE FURUKAWA ELECTRIC CO., LTD.
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier, optical repeater, and raman amplification method
- Publication number 20020085267
- Publication date Jul 4, 2002
- The Furukawa Electric CO., LTD
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier, optical repeater, and Raman amplification method
- Publication number 20020021487
- Publication date Feb 21, 2002
- The Furukawa Electric CO., LTD
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier, optical repeater, and raman amplification method
- Publication number 20010046083
- Publication date Nov 29, 2001
- The Furukawa Electric CO., LTD
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS

Youichi Akasaka

Person

Patents Grantslast 30 patents

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Dispersion shifted optical fiber

Wavelength division multiplex communication link for optical transm...

Dispersion compensating optical fiber

Dispension shift optical fiber and wavelength division multiplex tr...

Stimulated brillouin scattering suppressed optical fiber

Dispersion compensating fiber and its manufacturing method

Dispersion compensating optical fiber

Dispersion compensating optical fiber for wavelength multiplex tran...

Patents Applicationslast 30 patents

RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD

RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD

RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD

RAMAN AMPLIFIER, OPTICAL REPEATER, AND RAMAN AMPLIFICATION METHOD

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and raman amplification method

Raman amplifier, optical repeater, and Raman amplification method

Raman amplifier, optical repeater, and raman amplification method