Inventor
YAMAUCHI TOMOHIRO
JP26 patents
⚠️ This page may combine multiple inventors who share the name “YAMAUCHI TOMOHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
15 patentsUS11968033B2Apr 23, 2024
Optical transmission device, optical transmission system, and optical transmitting power control method
FUJITSU LTD4 citations74
US11163119B2Nov 2, 2021
Wavelength conversion device and method of performing wavelength conversion
FUJITSU LTD2 citations73
US10177843B2Jan 8, 2019
Network control apparatus and transmission quality margin calculation method
FUJITSU LTD2 citations72
US9923632B2Mar 20, 2018
Optical transmission apparatus, optical transmission system, and method of controlling output of optical signal
FUJITSU LTD3 citations72
US11533548B2Dec 20, 2022
Transmission device, transmission method, and transmission system
FUJITSU LTD0 citations52
US11799579B2Oct 24, 2023
Wavelength conversion device, transmission device, and transmission system
FUJITSU LTD0 citations51
US10425166B2Sep 24, 2019
Optical transmitter, optical transmission apparatus, and optical modulation method
FUJITSU LTD0 citations51
US9780905B2Oct 3, 2017
Transmission system and transmission method
FUJITSU LTD0 citations51
US9638574B2May 2, 2017
Measurement apparatus and method of measuring signal light quality
FUJITSU LTD0 citations51
US11243349B2Feb 8, 2022
Wavelength conversion device and excitation light switching method
FUJITSU LTD0 citations50
US11990988B2May 21, 2024
Optical transmission system and optical transmission device
FUJITSU LTD0 citations45
US10608775B2Mar 31, 2020
Optical transmission apparatus, optical transmission method, and optical transmission system
FUJITSU LTD0 citations41
US9838148B2Dec 5, 2017
Optical receiver and superimposed signal detecting method
FUJITSU LTD0 citations41
US9698929B2Jul 4, 2017
Optical receiver that has function to detect signal superimposed on optical signal and method for receiving optical signal
FUJITSU LTD0 citations41
US10554325B2Feb 4, 2020
Receiver and receiving method
FUJITSU LTD0 citations36