TADAO NAKAZAWA

Person

KAWASAKI-SHI, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical device module
- Patent number 7,476,038
- Issue date Jan 13, 2009
- Fujitsu Limited
- Yoichi Oikawa
- G02 - OPTICS
Information Patent Grant
Acousto-optic device and fabrication method of acousto-optic device
- Patent number 7,430,344
- Issue date Sep 30, 2008
- Fujitsu Limited
- Hiroshi Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control method and control apparatus of optical device
- Patent number 7,362,925
- Issue date Apr 22, 2008
- Fujitsu Limited
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical waveguide device and optical modulator
- Patent number 7,340,114
- Issue date Mar 4, 2008
- Fujitsu Limited
- Masaharu Doi
- G02 - OPTICS
Information Patent Grant
Optical device and drive voltage supply device
- Patent number 7,302,121
- Issue date Nov 27, 2007
- Fujitsu Limited
- Hiroshi Miyata
- G02 - OPTICS
Information Patent Grant
Optical waveguide device with reduced driving voltage
- Patent number 7,239,764
- Issue date Jul 3, 2007
- Fujitsu Limited
- Masaharu Doi
- G02 - OPTICS
Information Patent Grant
Acousto-optic device and fabrication method of acousto-optic device
- Patent number 7,218,797
- Issue date May 15, 2007
- Fujitsu Limited
- Hiroshi Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical waveguide, optical device, and method of manufacturing opti...
- Patent number 7,177,490
- Issue date Feb 13, 2007
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 7,155,072
- Issue date Dec 26, 2006
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Optical device module
- Patent number 7,151,866
- Issue date Dec 19, 2006
- Fujitsu Limited
- Yoichi Oikawa
- G02 - OPTICS
Information Patent Grant
Acousto-optical tunable filters cascaded together
- Patent number 7,116,907
- Issue date Oct 3, 2006
- Fujitsu Limited
- Tadao Nakazawa
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 7,088,875
- Issue date Aug 8, 2006
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Optical waveguide, optical device, and method of manufacturing opti...
- Patent number 7,054,512
- Issue date May 30, 2006
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 6,999,223
- Issue date Feb 14, 2006
- Fujitsu Limited
- Minoru Seino
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 6,950,218
- Issue date Sep 27, 2005
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Control method and control apparatus of optical device
- Patent number 6,934,433
- Issue date Aug 23, 2005
- Fujitsu Limited
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Connecting method of optical function devices, and optical apparatus
- Patent number 6,925,214
- Issue date Aug 2, 2005
- Fujitsu Limited
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Grant
Connecting method of optical function devices, and optical apparatus
- Patent number 6,917,732
- Issue date Jul 12, 2005
- Fujitsu Limited
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Grant
Optical modulator module and optical modulator
- Patent number 6,873,748
- Issue date Mar 29, 2005
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Connecting method of optical devices, and optical apparatus
- Patent number 6,870,972
- Issue date Mar 22, 2005
- Fujitsu Limited
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Grant
Optical modulator and design method therefor
- Patent number 6,867,901
- Issue date Mar 15, 2005
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Wavelength-selectable laser capable of high-speed frequency control
- Patent number 6,847,662
- Issue date Jan 25, 2005
- Fujitsu Limited
- Martin Bouda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical wavelength filter
- Patent number 6,783,282
- Issue date Aug 31, 2004
- Fujitsu Limited
- Tadao Nakazawa
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 6,768,570
- Issue date Jul 27, 2004
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Optical modulator having element for varying optical phase by elect...
- Patent number 6,741,378
- Issue date May 25, 2004
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Drive method for a plurality of acousto-optic filters, acousto-opti...
- Patent number 6,728,487
- Issue date Apr 27, 2004
- Fujitsu Limited
- Tadao Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical modulator and design method therefor
- Patent number 6,721,085
- Issue date Apr 13, 2004
- Fujitsu Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Acousto-optical tunable filter, method of driving the same, and opt...
- Patent number 6,701,031
- Issue date Mar 2, 2004
- Fujitsu Limited
- Tadao Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical waveguide filter
- Patent number 6,697,543
- Issue date Feb 24, 2004
- Fujitsu Limited
- Hiroshi Miyata
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 6,678,428
- Issue date Jan 13, 2004
- Fujitsu Limited
- Minoru Seino
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Acousto-optic device and fabrication method of acousto-optic device
- Publication number 20070189655
- Publication date Aug 16, 2007
- FUJITSU LIMITED
- Hiroshi Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical waveguide, optical device, and method of manufacturing opti...
- Publication number 20060133726
- Publication date Jun 22, 2006
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical device and drive voltage supply device
- Publication number 20060126988
- Publication date Jun 15, 2006
- FUJITSU LIMITED
- Tadao Nakazawa
- G02 - OPTICS
Information Patent Application
Wavelength tunable laser and method of controlling the same
- Publication number 20060002436
- Publication date Jan 5, 2006
- FUJITSU LIMITED
- Kazumasa Takabayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Acousto-optic device and fabrication method of acousto-optic device
- Publication number 20050259906
- Publication date Nov 24, 2005
- FUJITSU LIMITED
- Hiroshi Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Variable optical delay circuit
- Publication number 20050231786
- Publication date Oct 20, 2005
- FUJITSU LIMITED
- Shinji Taniguchi
- G02 - OPTICS
Information Patent Application
Control method and control apparatus of optical device
- Publication number 20050226550
- Publication date Oct 13, 2005
- FUJITSU LIMITED
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical modulator
- Publication number 20050213863
- Publication date Sep 29, 2005
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical modulator
- Publication number 20050175271
- Publication date Aug 11, 2005
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
OPTICAL MODULATOR
- Publication number 20050134952
- Publication date Jun 23, 2005
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical device module
- Publication number 20050089275
- Publication date Apr 28, 2005
- FUJITSU LIMITED
- Yoichi Oikawa
- G02 - OPTICS
Information Patent Application
Connecting method of optical function devices, and optical apparatus
- Publication number 20040218866
- Publication date Nov 4, 2004
- FUJITSU LIMITED
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Application
Optical waveguide, optical device, and method of manufacturing opti...
- Publication number 20040184755
- Publication date Sep 23, 2004
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical modulator and design method therefor
- Publication number 20040109223
- Publication date Jun 10, 2004
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical modulator
- Publication number 20040095628
- Publication date May 20, 2004
- FUJITSU LIMITED
- Minoru Seino
- G02 - OPTICS
Information Patent Application
Optical modulator
- Publication number 20030231369
- Publication date Dec 18, 2003
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Wavelength-selectable laser capable of high-speed frequency control
- Publication number 20030179790
- Publication date Sep 25, 2003
- FUJITSU LIMITED
- Martin Bouda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical modulator and design method therefor
- Publication number 20030169478
- Publication date Sep 11, 2003
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical modulator having element for varying optical phase by elect...
- Publication number 20030151793
- Publication date Aug 14, 2003
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical waveguide device
- Publication number 20030147576
- Publication date Aug 7, 2003
- FUJITSU LIMITED
- Masaharu Doi
- G02 - OPTICS
Information Patent Application
Optical modulator module and optical modulator
- Publication number 20030147575
- Publication date Aug 7, 2003
- FUJITSU LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
Optical waveguide device and optical modulator
- Publication number 20030147591
- Publication date Aug 7, 2003
- FUJITSU LIMITED
- Masaharu Doi
- G02 - OPTICS
Information Patent Application
Connecting method of optical devices, and optical apparatus
- Publication number 20030123777
- Publication date Jul 3, 2003
- FUJITSU LIMITED
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Application
Control method and control apparatus of optical device
- Publication number 20030123782
- Publication date Jul 3, 2003
- FUJITSU LIMITED OF Kawasaki, Japan
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Connecting method of optical function devices, and optical apparatus
- Publication number 20030123783
- Publication date Jul 3, 2003
- FUJITSU LIMITED
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Application
Optical wavelength filter
- Publication number 20030123774
- Publication date Jul 3, 2003
- FUJITSU LIMITED
- Tadao Nakazawa
- G02 - OPTICS
Information Patent Application
CONTROL METHOD AND CONTROL APPARATUS OF OPTICAL WAVELENGTH VARIABLE...
- Publication number 20030123129
- Publication date Jul 3, 2003
- FUJITSU LIMITED
- Tadao Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ACOUSTO-OPTIC TUNABLE FILTER
- Publication number 20030035200
- Publication date Feb 20, 2003
- FUJITSU LIMITED
- Shinichi Aoki
- G02 - OPTICS
Information Patent Application
Optical waveguide filter
- Publication number 20030026558
- Publication date Feb 6, 2003
- FUJITSU LIMITED
- Hiroshi Miyata
- G02 - OPTICS
Information Patent Application
Multi-wavelength light source utilzing acousto-optic tunable filter
- Publication number 20020196532
- Publication date Dec 26, 2002
- Naoki Hashimoto
- H01 - BASIC ELECTRIC ELEMENTS

TADAO NAKAZAWA

Person

Patents Grantslast 30 patents

Optical device module

Acousto-optic device and fabrication method of acousto-optic device

Control method and control apparatus of optical device

Optical waveguide device and optical modulator

Optical device and drive voltage supply device

Optical waveguide device with reduced driving voltage

Acousto-optic device and fabrication method of acousto-optic device

Optical waveguide, optical device, and method of manufacturing opti...

Optical modulator

Optical device module

Acousto-optical tunable filters cascaded together

Optical modulator

Optical waveguide, optical device, and method of manufacturing opti...

Optical modulator

Optical modulator

Control method and control apparatus of optical device

Connecting method of optical function devices, and optical apparatus

Connecting method of optical function devices, and optical apparatus

Optical modulator module and optical modulator

Connecting method of optical devices, and optical apparatus

Optical modulator and design method therefor

Wavelength-selectable laser capable of high-speed frequency control

Optical wavelength filter

Optical modulator

Optical modulator having element for varying optical phase by elect...

Drive method for a plurality of acousto-optic filters, acousto-opti...

Optical modulator and design method therefor

Acousto-optical tunable filter, method of driving the same, and opt...

Optical waveguide filter

Optical modulator

Patents Applicationslast 30 patents

Acousto-optic device and fabrication method of acousto-optic device

Optical waveguide, optical device, and method of manufacturing opti...

Optical device and drive voltage supply device

Wavelength tunable laser and method of controlling the same

Acousto-optic device and fabrication method of acousto-optic device

Variable optical delay circuit

Control method and control apparatus of optical device

Optical modulator

Optical modulator

OPTICAL MODULATOR

Optical device module

Connecting method of optical function devices, and optical apparatus

Optical waveguide, optical device, and method of manufacturing opti...

Optical modulator and design method therefor

Optical modulator

Optical modulator

Wavelength-selectable laser capable of high-speed frequency control

Optical modulator and design method therefor

Optical modulator having element for varying optical phase by elect...

Optical waveguide device

Optical modulator module and optical modulator

Optical waveguide device and optical modulator

Connecting method of optical devices, and optical apparatus

Control method and control apparatus of optical device

Connecting method of optical function devices, and optical apparatus

Optical wavelength filter

CONTROL METHOD AND CONTROL APPARATUS OF OPTICAL WAVELENGTH VARIABLE...

ACOUSTO-OPTIC TUNABLE FILTER

Optical waveguide filter

Multi-wavelength light source utilzing acousto-optic tunable filter