Inventor
OTSUBO KOJI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “OTSUBO KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
9 patentsUS5373520ADec 13, 1994
Surface emitting laser and method of manufacturing the same
FUJITSU LTD57 citations94
US7595508B2Sep 29, 2009
Optical semiconductor device and method for fabricating the same
FUJITSU LTD24 citations92
US7522647B2Apr 21, 2009
Semiconductor laser and method of fabricating the same
FUJITSU LTD28 citations92
US8031394B2Oct 4, 2011
Wavelength conversion system, optical integrated device and wavelength conversion method
FUJITSU LTD6 citations73
US7099363B2Aug 29, 2006
Surface-emitting laser with a low threshold value and low power consumption and method of manufacturing the same
FUJITSU LTD7 citations73
US5404370AApr 4, 1995
Planar light emitting device having a reduced optical loss
FUJITSU LTD14 citations73
US7436586B2Oct 14, 2008
Wavelength conversion system, optical integrated device and wavelength conversion method
FUJITSU LTD5 citations62
US6728287B2Apr 27, 2004
Surface emitting semiconductor laser device capable of improving heat radiation efficiency and its manufacture method
FUJITSU LTD0 citations51
US7564883B2Jul 21, 2009
Optical semiconductor device and method for fabricating the same
FUJITSU LTD0 citations41
FUJITSU OPTICAL COMPONENTS LTD
5 patentsUS11710914B2Jul 25, 2023
Optical module
FUJITSU OPTICAL COMPONENTS LTD16 citations82
US10411823B2Sep 10, 2019
Optical transmitter and optical receiver
FUJITSU OPTICAL COMPONENTS LTD1 citations62
US12047121B2Jul 23, 2024
Optical device, optical transmission apparatus, optical reception apparatus, and optical communication apparatus
FUJITSU OPTICAL COMPONENTS LTD0 citations51
US11309985B2Apr 19, 2022
Light source device that includes a plurality of light sources with different wavelengths and method of controlling wavelengths
FUJITSU OPTICAL COMPONENTS LTD0 citations51
US10714896B2Jul 14, 2020
Multi-wavelength light source and optical module using the same
FUJITSU OPTICAL COMPONENTS LTD0 citations51