Koji Otsubo

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical device, optical transmission apparatus, optical reception a...
- Patent number 12,047,121
- Issue date Jul 23, 2024
- Fujitsu Optical Components Limited
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical module
- Patent number 11,710,914
- Issue date Jul 25, 2023
- Fujitsu Optical Components Limited
- Tomonori Azuma
- G02 - OPTICS
Information Patent Grant
Light source device that includes a plurality of light sources with...
- Patent number 11,309,985
- Issue date Apr 19, 2022
- Fujitsu Optical Components Limited
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-wavelength light source and optical module using the same
- Patent number 10,714,896
- Issue date Jul 14, 2020
- Fujitsu Optical Components Limited
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical transmitter and optical receiver
- Patent number 10,411,823
- Issue date Sep 10, 2019
- Fujitsu Optical Components Limited
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission method
- Patent number 8,965,201
- Issue date Feb 24, 2015
- Fujitsu Optical Components Limited
- Naoki Kuwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical waveform reshaping device
- Patent number 8,130,443
- Issue date Mar 6, 2012
- Fujitsu Limited
- Koji Otsubo
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Wavelength conversion system, optical integrated device and wavelen...
- Patent number 8,031,394
- Issue date Oct 4, 2011
- Fujitsu Limited
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical semiconductor device and method for fabricating the same
- Patent number 7,595,508
- Issue date Sep 29, 2009
- Fujitsu Limited
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical semiconductor device and method for fabricating the same
- Patent number 7,564,883
- Issue date Jul 21, 2009
- Fujitsu Limited
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser and method of fabricating the same
- Patent number 7,522,647
- Issue date Apr 21, 2009
- Fujitsu Limited
- Nobuaki Hatori
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Wavelength conversion system, optical integrated device and wavelen...
- Patent number 7,436,586
- Issue date Oct 14, 2008
- Fujitsu Limited
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Surface-emitting laser with a low threshold value and low power con...
- Patent number 7,099,363
- Issue date Aug 29, 2006
- Fujitsu Limited
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Surface emitting semiconductor laser device capable of improving he...
- Patent number 6,728,287
- Issue date Apr 27, 2004
- Fujitsu Limited
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Planar light emitting device having a reduced optical loss
- Patent number 5,404,370
- Issue date Apr 4, 1995
- Fujitsu Limited
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Surface emitting laser and method of manufacturing the same
- Patent number 5,373,520
- Issue date Dec 13, 1994
- Fujitsu Limited
- Hajime Shoji
- B82 - NANO-TECHNOLOGY

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DEVICE, OPTICAL TRANSMISSION APPARATUS, OPTICAL RECEPTION A...
- Publication number 20230231632
- Publication date Jul 20, 2023
- FUJITSU OPTICAL COMPONENTS LIMITED
- Koji OTSUBO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT SOURCE DEVICE THAT INCLUDES A PLURALITY OF LIGHT SOURCES WITH...
- Publication number 20210273737
- Publication date Sep 2, 2021
- FUJITSU OPTICAL COMPONENTS LIMITED
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL MODULE
- Publication number 20200373691
- Publication date Nov 26, 2020
- FUJITSU OPTICAL COMPONENTS LIMITED
- Tomonori AZUMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTI-WAVELENGTH LIGHT SOURCE AND OPTICAL MODULE USING THE SAME
- Publication number 20190348810
- Publication date Nov 14, 2019
- FUJITSU OPTICAL COMPONENTS LIMITED
- Koji Otsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL TRANSMITTER AND OPTICAL RECEIVER
- Publication number 20180337744
- Publication date Nov 22, 2018
- FUJITSU OPTICAL COMPONENTS LIMITED
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER MODULE
- Publication number 20160142131
- Publication date May 19, 2016
- FUJITSU OPTICAL COMPONENTS LIMITED
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVER
- Publication number 20150349911
- Publication date Dec 3, 2015
- FUJITSU OPTICAL COMPONENTS LIMITED
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD
- Publication number 20120121259
- Publication date May 17, 2012
- FUJITSU OPTICAL COMPONENTS LIMITED
- Naoki Kuwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength conversion system, optical integrated device and wavelen...
- Publication number 20090080064
- Publication date Mar 26, 2009
- FUJITSU LIMITED
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL WAVEFORM RESHAPING DEVICE
- Publication number 20080198444
- Publication date Aug 21, 2008
- Fujitsu Limited
- Koji OTSUBO
- G02 - OPTICS
Information Patent Application
Wavelength conversion system, optical integrated device and wavelen...
- Publication number 20060279835
- Publication date Dec 14, 2006
- FUJITSU LIMITED
- Koji Otsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Semiconductor laser and method of fabricating the same
- Publication number 20060222028
- Publication date Oct 5, 2006
- FUJITSU LIMITED
- Nobuaki Hatori
- B82 - NANO-TECHNOLOGY
Information Patent Application
Optical semiconductor device and method for fabricating the same
- Publication number 20050271103
- Publication date Dec 8, 2005
- FUJITSU LIMITED
- Koji Otsubo
- B82 - NANO-TECHNOLOGY
Information Patent Application
Optical semiconductor device and method for fabricating the same
- Publication number 20050045868
- Publication date Mar 3, 2005
- FUJITSU LIMITED
- Koji Otsubo
- B82 - NANO-TECHNOLOGY
Information Patent Application
Surface-emitting laser with a low threshold value and low power con...
- Publication number 20030174750
- Publication date Sep 18, 2003
- FUJITSU LIMITED
- Koji Otsubo
- B82 - NANO-TECHNOLOGY
Information Patent Application
Surface emitting semiconductor laser device capable of improving he...
- Publication number 20020094001
- Publication date Jul 18, 2002
- FUJITSU LIMITED
- Koji Otsubo
- B82 - NANO-TECHNOLOGY

Koji Otsubo

Person

Patents Grantslast 30 patents

Optical device, optical transmission apparatus, optical reception a...

Optical module

Light source device that includes a plurality of light sources with...

Multi-wavelength light source and optical module using the same

Optical transmitter and optical receiver

Optical transmission device and optical transmission method

Optical waveform reshaping device

Wavelength conversion system, optical integrated device and wavelen...

Optical semiconductor device and method for fabricating the same

Optical semiconductor device and method for fabricating the same

Semiconductor laser and method of fabricating the same

Wavelength conversion system, optical integrated device and wavelen...

Surface-emitting laser with a low threshold value and low power con...

Surface emitting semiconductor laser device capable of improving he...

Planar light emitting device having a reduced optical loss

Surface emitting laser and method of manufacturing the same

Patents Applicationslast 30 patents

OPTICAL DEVICE, OPTICAL TRANSMISSION APPARATUS, OPTICAL RECEPTION A...

LIGHT SOURCE DEVICE THAT INCLUDES A PLURALITY OF LIGHT SOURCES WITH...

OPTICAL MODULE

MULTI-WAVELENGTH LIGHT SOURCE AND OPTICAL MODULE USING THE SAME

OPTICAL TRANSMITTER AND OPTICAL RECEIVER

OPTICAL TRANSMITTER MODULE

OPTICAL RECEIVER

OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD

Wavelength conversion system, optical integrated device and wavelen...

OPTICAL WAVEFORM RESHAPING DEVICE

Wavelength conversion system, optical integrated device and wavelen...

Semiconductor laser and method of fabricating the same

Optical semiconductor device and method for fabricating the same

Optical semiconductor device and method for fabricating the same

Surface-emitting laser with a low threshold value and low power con...

Surface emitting semiconductor laser device capable of improving he...