Inventor
TABUCHI HARUHIKO
JP35 patents
Patents
35 patentsUS5764832AJun 9, 1998
Integrated semiconductor optical devices and method of manufacture employing substrate having alignment groove
FUJITSU LTD140 citations99
US5481629AJan 2, 1996
Hybrid optical IC with optical axes at different levels
FUJITSU LTD185 citations99
US6112002AAug 29, 2000
Optical coupler optically coupling a light beam of a semiconductor laser source with a single mode optical waveguide or fiber
FUJITSU LTD91 citations98
US5909524AJun 1, 1999
Optical coupling structure and a fabrication process thereof
FUJITSU LTD97 citations98
US5611006AMar 11, 1997
Hybrid type integrated optical device having double-layered substrate
FUJITSU LTD116 citations98
US5671315ASep 23, 1997
Optical parts fixing apparatus and method of manufacturing the same
FUJITSU LTD121 citations96
US5644667AJul 1, 1997
Integrated semiconductor optical devices and method of manufacture employing substrate having alignment groove
FUJITSU LTD87 citations96
US5987046ANov 16, 1999
Optical semiconductor device and a method of manufacturing the same
FUJITSU LTD82 citations95
US5787106AJul 28, 1998
Optical semiconductor device for changing a beam diameter
FUJITSU LTD59 citations94
US5388106AFeb 7, 1995
Tunable optical source for producing a coherent optical beam with a wide range of wavelength tuning
FUJITSU LTD22 citations92
US6238943B1May 29, 2001
Optical semiconductor device and a method of manufacturing the same
FUJITSU LTD35 citations91
US6085000AJul 4, 2000
Wavelength division multiplexing optical device and manufacturing method therefor
FUJITSU LTD23 citations91
US5757999AMay 26, 1998
Optical device
FUJITSU LTD24 citations91
US5255276AOct 19, 1993
Driver circuit of a tunable laser diode
FUJITSU LTD23 citations91
US7400793B2Jul 15, 2008
Optical device with slab waveguide and channel waveguides on substrate
FUJITSU LTD15 citations84
US7386206B2Jun 10, 2008
Optical device with slab waveguide and channel waveguides on substrate
FUJITSU LTD9 citations84
US6978061B1Dec 20, 2005
Optical switching device
FUJITSU LTD19 citations84
US6810167B2Oct 26, 2004
Wavelength division demultiplexing apparatus
FUJITSU LTD13 citations84
US6552366B1Apr 22, 2003
Optical transmitting and receiving device and the manufacturing method
FUJITSU LTD13 citations84
US6965717B1Nov 15, 2005
Optical device, polarization monitor and optical switch
FUJITSU LTD9 citations74
US5126875AJun 30, 1992
Semiconductor optical device having a variable refractive index profile
FUJITSU LTD15 citations74
US7020358B2Mar 28, 2006
Wavelength division demultiplexing apparatus
FUJITSU LTD8 citations73
US6038242AMar 14, 2000
Multiwavelength light source
FUJITSU LTD12 citations73
US5200968AApr 6, 1993
Laser amplifier for amplifying optical waves without saturation
FUJITSU LTD8 citations70
US7587112B2Sep 8, 2009
Optical device and light control method
FUJITSU LTD3 citations63
US7428355B2Sep 23, 2008
Wavelength selective and level adjusting optical device
FUJITSU LTD2 citations63
US7313301B2Dec 25, 2007
Optical fiber device, optical monitor and optical switch
FUJITSU LTD4 citations63
US7239770B2Jul 3, 2007
Optical device
FUJITSU LTD3 citations63
US6920264B2Jul 19, 2005
Arrayed waveguide grating type wavelength division demultiplexer
FUJITSU LTD6 citations63
US6807354B2Oct 19, 2004
Waveguide optical device
FUJITSU LTD4 citations63
US6529647B2Mar 4, 2003
Optical device with optical waveguides and manufacturing method therefor
FUJITSU LTD3 citations63
US7289695B2Oct 30, 2007
Optical switching device and optical member unit
FUJITSU LTD1 citations52
US6813415B2Nov 2, 2004
Wavelength multiplexing/demultiplexing apparatus
FUJITSU LTD1 citations52
US6579739B2Jun 17, 2003
Optical transmitting and receiving device and the manufacturing method
FUJITSU LTD0 citations52
US7130504B2Oct 31, 2006
Optical demultiplexing device and optical monitoring device
FUJITSU LTD0 citations42