Inventor
ASAMIZU SATOSHI
JP5 patents
Patents
5 patentsUS7194210B2Mar 20, 2007
Wavelength division multiplexing optical transmission equipment and method of amplifying optical wavelength division multiplexed signals
HITACHI LTD10 citations82
US7116908B2Oct 3, 2006
Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio
HITACHI LTD12 citations82
US7536110B2May 19, 2009
Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio
HITACHI LTD3 citations61
US7391974B2Jun 24, 2008
Wavelength division multiplexing optical transmission equipment and method of amplifying optical wavelength division multiplexed signals
HITACHI LTD2 citations61
US7272325B2Sep 18, 2007
Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio
HITACHI LTD0 citations51