Inventor
SAWAMURA TAKETSUGU
JP11 patents
Patents
11 patentsUS10020638B2Jul 10, 2018
Optical semiconductor device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD11 citations83
US9601905B2Mar 21, 2017
Optical semiconductor device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD11 citations83
US9083150B2Jul 14, 2015
Optical semiconductor device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD10 citations83
US12009636B2Jun 11, 2024
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD2 citations72
US11581706B2Feb 14, 2023
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD2 citations72
US10511150B2Dec 17, 2019
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD6 citations72
US12327983B2Jun 10, 2025
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD0 citations62
US11605935B2Mar 14, 2023
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD0 citations62
US10938183B2Mar 2, 2021
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD0 citations62
US12468096B2Nov 11, 2025
Optical device and method for manufacturing optical device
FURUKAWA ELECTRIC CO LTD0 citations50
US9711945B2Jul 18, 2017
Method of designing semiconductor laser device, method of designing raman amplifier, methods of manufacturing semiconductor laser device, semiconductor laser device, raman amplifier, and optical communication system
FURUKAWA ELECTRIC CO LTD0 citations41