Inventor
HARASAWA SHIN-ICHIROU
JP12 patents
Patents
12 patentsUS6847788B2Jan 25, 2005
System and method for equalizing transmission characteristics in wavelength division multiplexing optical communication system
FUJITSU LTD23 citations92
US6807370B2Oct 19, 2004
Optical transmission system
FUJITSU LTD37 citations92
US6452721B2Sep 17, 2002
Method, device, and system for evaluating characteristics of optical fiber transmission line
FUJITSU LTD20 citations92
US6185022B1Feb 6, 2001
Optical transmission system and transmitting terminal station
FUJITSU LTD51 citations92
US6075633AJun 13, 2000
Light transmission system
FUJITSU LTD23 citations92
US6452701B1Sep 17, 2002
Wavelength division multiplexing communications network supervisory system
FUJITSU LTD20 citations91
US6404523B1Jun 11, 2002
Wavelength division multiplexing system and its termination
FUJITSU LTD38 citations91
US6980745B2Dec 27, 2005
Optical transmission system
FUJITSU LTD10 citations72
US7031618B2Apr 18, 2006
Optical transmission system in which gains in gain bands are remotely controlled by transmitting tone signals having variable characteristics
FUJITSU LTD4 citations62
US6907157B2Jun 14, 2005
Method and system for optical fiber transmission using raman amplification
FUJITSU LTD2 citations62
US6816683B2Nov 9, 2004
Wavelength division multiplexing communications network supervisory system
FUJITSU LTD3 citations61
US6301032B1Oct 9, 2001
Optical multiplexing/demultiplexing device
FUJITSU LTD5 citations61