Kenji Tagawa

Person

Tachikawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Wavelength-division-multiplexing optical amplifier
- Patent number 6,061,173
- Issue date May 9, 2000
- Fujitsu Limited
- Kazuo Yamane
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength-division-multiplexing optical amplifier
- Patent number 5,764,404
- Issue date Jun 9, 1998
- Fujitsu Limited
- Kazuo Yamane
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for controlling optical amplifier used for opt...
- Patent number 5,745,283
- Issue date Apr 28, 1998
- Fujitsu Limited
- Shinya Inagaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier
- Patent number 5,508,842
- Issue date Apr 16, 1996
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber amplifier
- Patent number 5,467,218
- Issue date Nov 14, 1995
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier for 1.3 .mu.m band
- Patent number 5,327,282
- Issue date Jul 5, 1994
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical transmitter including rare earth-doped fiber
- Patent number 5,276,549
- Issue date Jan 4, 1994
- Fujitsu Limited
- Kenji Tagawa
- G02 - OPTICS
Information Patent Grant
Optical fiber amplifier
- Patent number 5,155,621
- Issue date Oct 13, 1992
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fiber optic amplifier
- Patent number 5,140,598
- Issue date Aug 18, 1992
- Fujitsu Limited
- Kenji Tagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Photodetector module for coupling with optical fiber
- Patent number 5,065,011
- Issue date Nov 12, 1991
- Fujitsu Limited
- Makoto Fujihara
- G02 - OPTICS

Kenji Tagawa

Person

Patents Grantslast 30 patents

Wavelength-division-multiplexing optical amplifier

Wavelength-division-multiplexing optical amplifier

Method and apparatus for controlling optical amplifier used for opt...

Optical amplifier

Optical fiber amplifier

Optical amplifier for 1.3 .mu.m band

Optical transmitter including rare earth-doped fiber

Optical fiber amplifier

Fiber optic amplifier

Photodetector module for coupling with optical fiber