Atsushi Toyohara

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical fiber holding structure
- Patent number 6,947,644
- Issue date Sep 20, 2005
- Mitsubishi Cable Industries, Ltd.
- Katsuaki Kondo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Double cladding fiber and optical fiber amplifier
- Patent number 6,335,822
- Issue date Jan 1, 2002
- NEC Corporation
- Atsushi Toyohara
- G02 - OPTICS
Information Patent Grant
Thermo-optic device with evanescent wave coupling
- Patent number 6,304,697
- Issue date Oct 16, 2001
- NEC Corporation
- Atsushi Toyohara
- G02 - OPTICS
Information Patent Grant
Wavelength division multiplexed optical communication system
- Patent number 6,271,948
- Issue date Aug 7, 2001
- NEC Corporation
- Atsushi Toyohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
WDM optical communication system
- Patent number 6,236,482
- Issue date May 22, 2001
- NEC Corporation
- Atsushi Toyohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bi-directional optical amplifier
- Patent number 6,175,444
- Issue date Jan 16, 2001
- NEC Corporation
- Atsushi Toyohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber amplifier
- Patent number 6,111,686
- Issue date Aug 29, 2000
- NEC Corporation
- Atsushi Toyohara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
WDM optical transmitter
- Patent number 6,104,848
- Issue date Aug 15, 2000
- NEC Corporation
- Atsushi Toyohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber amplifier and an optical communication system using same
- Patent number 6,072,601
- Issue date Jun 6, 2000
- NEC Corporation
- Atsushi Toyohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light source for wavelength division multiplexing communications
- Patent number 6,064,503
- Issue date May 16, 2000
- NEC Corporation
- Atsushi Toyohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit for optical WDM system
- Patent number 5,953,470
- Issue date Sep 14, 1999
- NEC Corporation
- Atsushi Toyohara
- G02 - OPTICS
Information Patent Grant
Optical equalizer
- Patent number 5,933,270
- Issue date Aug 3, 1999
- NEC Corporation
- Atsushi Toyohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical waveguide device having a double-refractor at an input thereof
- Patent number 5,923,795
- Issue date Jul 13, 1999
- NEC Corporation
- Atsushi Toyohara
- G02 - OPTICS
Information Patent Grant
Waveguide type optical external modulator
- Patent number 5,815,609
- Issue date Sep 29, 1998
- NEC Corporation
- Atsushi Toyohara
- G02 - OPTICS
Information Patent Grant
Waveguide-type optical device and impedance matching method thereof
- Patent number 5,572,610
- Issue date Nov 5, 1996
- NEC Corporation
- Atsushi Toyohara
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical fiber holding structure
- Publication number 20030012505
- Publication date Jan 16, 2003
- Katsuaki Kondo
- G02 - OPTICS

Atsushi Toyohara

Person

Patents Grantslast 30 patents

Optical fiber holding structure

Double cladding fiber and optical fiber amplifier

Thermo-optic device with evanescent wave coupling

Wavelength division multiplexed optical communication system

WDM optical communication system

Bi-directional optical amplifier

Optical fiber amplifier

WDM optical transmitter

Optical fiber amplifier and an optical communication system using same

Light source for wavelength division multiplexing communications

Circuit for optical WDM system

Optical equalizer

Optical waveguide device having a double-refractor at an input thereof

Waveguide type optical external modulator

Waveguide-type optical device and impedance matching method thereof

Patents Applicationslast 30 patents

Optical fiber holding structure