Inventor
HARASAWA SHINICHIROU
JP16 patents
⚠️ This page may combine multiple inventors who share the name “HARASAWA SHINICHIROU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
15 patentsUS6721507B2Apr 13, 2004
Optical communications system
FUJITSU LTD19 citations92
US6233076B1May 15, 2001
Optical communications system
FUJITSU LTD25 citations92
US5883735AMar 16, 1999
Optical amplifying repeater
FUJITSU LTD25 citations92
US5784192AJul 21, 1998
Optical amplifying repeater
FUJITSU LTD27 citations92
US6144474ANov 7, 2000
Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters
FUJITSU LTD20 citations91
US5615290AMar 25, 1997
Branch device for optical multiplex system
FUJITSU LTD49 citations91
US5459328AOct 17, 1995
Driver circuit for light emitting elements connected in series and an optical amplifying repeater using the same
FUJITSU LTD56 citations91
US7792430B2Sep 7, 2010
Automatic power restoring method and optical communication system
FUJITSU LTD9 citations83
US7437069B2Oct 14, 2008
Automatic power restoring method and optical communication system
FUJITSU LTD8 citations73
US6414770B2Jul 2, 2002
Optical communications system
FUJITSU LTD9 citations73
US5838476ANov 17, 1998
Input monitoring system for optical amplifying repeater
FUJITSU LTD15 citations73
US7420666B2Sep 2, 2008
Measurement method by OTDR and terminal station apparatus
FUJITSU LTD5 citations72
US7664392B2Feb 16, 2010
Automatic power restoring method and optical communication system
FUJITSU LTD4 citations62
US7092149B1Aug 15, 2006
Input monitoring system for optical amplifying repeater
FUJITSU LTD2 citations62
US5530936AJun 25, 1996
Semiconductor laser driving circuit
FUJITSU LTD4 citations62