Inventor
YOKOTA IZUMI
JP7 patents
Patents
7 patentsUS5074631ADec 24, 1991
Optical modulator
FUJITSU LTD130 citations97
US6424459B1Jul 23, 2002
Gain-flattening of an optical amplifier with split-band architecture
FUJITSU LTD19 citations90
US5875045AFeb 23, 1999
Wavelength-multiplexing optical communication method employing RZ signals, wavelength-multiplexing optical sending apparatus employing RZ signals, and wavelength-multiplexing optical communication system employing RZ signals
FUJITSU LTD12 citations73
US6980745B2Dec 27, 2005
Optical transmission system
FUJITSU LTD10 citations72
US7657176B2Feb 2, 2010
Method, apparatus, and system for evaluating faulty point in multi-stage optical amplifying and repeating transmission line
FUJITSU LTD5 citations60
US7146071B2Dec 5, 2006
Optical transmission system
FUJITSU LTD2 citations60
US8351790B2Jan 8, 2013
Optical OADM transmission system with loopback
FUJITSU LTD3 citations52