Inventor · disambiguated record
Haruhiko Tabuchi
Also filed as: TABUCHI HARUHIKO
35 granted patents·1,253 citations·filing 1991–2007
98Inventor score
Files withFUJITSU LTD35
Top patents by PatentIndex Score
35 records- 0196US5481629AHybrid optical IC with optical axes at different levelsFUJITSU LTD·Filed 1994·Granted Jan 2, 1996·185 cites·29 claims
- 0293US5764832AIntegrated semiconductor optical devices and method of manufacture employing substrate having alignment grooveFUJITSU LTD·Filed 1996·Granted Jun 9, 1998·140 cites·9 claims
- 0392US5611006AHybrid type integrated optical device having double-layered substrateFUJITSU LTD·Filed 1994·Granted Mar 11, 1997·116 cites·19 claims
- 0491US5671315AOptical parts fixing apparatus and method of manufacturing the sameFUJITSU LTD·Filed 1995·Granted Sep 23, 1997·121 cites·15 claims
- 0590US5987046AOptical semiconductor device and a method of manufacturing the sameFUJITSU LTD·Filed 1997·Granted Nov 16, 1999·82 cites·33 claims
- 0689US6112002AOptical coupler optically coupling a light beam of a semiconductor laser source with a single mode optical waveguide or fiberFUJITSU LTD·Filed 1998·Granted Aug 29, 2000·91 cites·46 claims
- 0789US5909524AOptical coupling structure and a fabrication process thereofFUJITSU LTD·Filed 1997·Granted Jun 1, 1999·97 cites·65 claims
- 0888US6978061B1Optical switching deviceFUJITSU LTD·Filed 2005·Granted Dec 20, 2005·19 cites·15 claims
- 0988US5644667AIntegrated semiconductor optical devices and method of manufacture employing substrate having alignment grooveFUJITSU LTD·Filed 1994·Granted Jul 1, 1997·87 cites·22 claims
- 1087US7400793B2Optical device with slab waveguide and channel waveguides on substrateFUJITSU LTD·Filed 2006·Granted Jul 15, 2008·15 cites·8 claims
- 1181US5787106AOptical semiconductor device for changing a beam diameterFUJITSU LTD·Filed 1996·Granted Jul 28, 1998·59 cites·29 claims
- 1278US6965717B1Optical device, polarization monitor and optical switchFUJITSU LTD·Filed 2005·Granted Nov 15, 2005·9 cites·18 claims
- 1377US7587112B2Optical device and light control methodFUJITSU LTD·Filed 2005·Granted Sep 8, 2009·3 cites·33 claims
- 1474US6238943B1Optical semiconductor device and a method of manufacturing the sameFUJITSU LTD·Filed 1999·Granted May 29, 2001·35 cites·8 claims
- 1573US6810167B2Wavelength division demultiplexing apparatusFUJITSU LTD·Filed 2002·Granted Oct 26, 2004·13 cites·39 claims
- 1667US7386206B2Optical device with slab waveguide and channel waveguides on substrateFUJITSU LTD·Filed 2003·Granted Jun 10, 2008·9 cites·13 claims
- 1767US7020358B2Wavelength division demultiplexing apparatusFUJITSU LTD·Filed 2004·Granted Mar 28, 2006·8 cites·22 claims
- 1866US7313301B2Optical fiber device, optical monitor and optical switchFUJITSU LTD·Filed 2005·Granted Dec 25, 2007·4 cites·6 claims
- 1966US7239770B2Optical deviceFUJITSU LTD·Filed 2005·Granted Jul 3, 2007·3 cites·6 claims
- 2065US5388106ATunable optical source for producing a coherent optical beam with a wide range of wavelength tuningFUJITSU LTD·Filed 1994·Granted Feb 7, 1995·22 cites·28 claims
- 2164US5255276ADriver circuit of a tunable laser diodeFUJITSU LTD·Filed 1991·Granted Oct 19, 1993·23 cites·11 claims
- 2261US7428355B2Wavelength selective and level adjusting optical deviceFUJITSU LTD·Filed 2007·Granted Sep 23, 2008·2 cites·1 claims
- 2359US6920264B2Arrayed waveguide grating type wavelength division demultiplexerFUJITSU LTD·Filed 2003·Granted Jul 19, 2005·6 cites·25 claims
- 2459US6085000AWavelength division multiplexing optical device and manufacturing method thereforFUJITSU LTD·Filed 1998·Granted Jul 4, 2000·23 cites·5 claims
- 2557US5757999AOptical deviceFUJITSU LTD·Filed 1996·Granted May 26, 1998·24 cites·6 claims
- 2655US7289695B2Optical switching device and optical member unitFUJITSU LTD·Filed 2005·Granted Oct 30, 2007·1 cites·15 claims
- 2755US6807354B2Waveguide optical deviceFUJITSU LTD·Filed 2002·Granted Oct 19, 2004·4 cites·20 claims
- 2850US6552366B1Optical transmitting and receiving device and the manufacturing methodFUJITSU LTD·Filed 1998·Granted Apr 22, 2003·13 cites·21 claims
- 2950US6529647B2Optical device with optical waveguides and manufacturing method thereforFUJITSU LTD·Filed 2000·Granted Mar 4, 2003·3 cites·11 claims
- 3049US5126875ASemiconductor optical device having a variable refractive index profileFUJITSU LTD·Filed 1991·Granted Jun 30, 1992·15 cites·13 claims
- 3146US6813415B2Wavelength multiplexing/demultiplexing apparatusFUJITSU LTD·Filed 2003·Granted Nov 2, 2004·1 cites·7 claims
- 3244US6038242AMultiwavelength light sourceFUJITSU LTD·Filed 1998·Granted Mar 14, 2000·12 cites·8 claims
- 3341US7130504B2Optical demultiplexing device and optical monitoring deviceFUJITSU LTD·Filed 2005·Granted Oct 31, 2006·0 cites·18 claims
- 3440US6579739B2Optical transmitting and receiving device and the manufacturing methodFUJITSU LTD·Filed 2001·Granted Jun 17, 2003·0 cites·11 claims
- 3537US5200968ALaser amplifier for amplifying optical waves without saturationFUJITSU LTD·Filed 1991·Granted Apr 6, 1993·8 cites·12 claims
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