Inventor
OI HIROKI
JP8 patents
Patents
8 patentsUS9432113B2Aug 30, 2016
Optical transmission device
FUJITSU LTD8 citations82
US10541749B2Jan 21, 2020
Optical wavelength multiplexing transmission apparatus and optical wavelength multiplexing transmission method
FUJITSU LTD5 citations72
US9906296B2Feb 27, 2018
Network controller and signal quality estimating method
FUJITSU LTD2 citations72
US11876559B2Jan 16, 2024
Optical transmission system and fiber type determination method
FUJITSU LTD0 citations51
US10256903B2Apr 9, 2019
Network controller and signal quality estimating method
FUJITSU LTD0 citations51
US10020878B2Jul 10, 2018
Optical signal-to-noise ratio monitor and method for measuring optical signal to-noise ratio
FUJITSU LTD0 citations51
US9071379B2Jun 30, 2015
Optical branching and insertion device, network management device, and wavelength selective switch
FUJITSU LTD0 citations50
US9444572B2Sep 13, 2016
Transmission device and transmission method
FUJITSU LTD1 citations48