Inventor
SUGIYA HIDEAKI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “SUGIYA HIDEAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
15 patentsUS5664131ASep 2, 1997
Light amplifier
FUJITSU LTD162 citations98
US5859725AJan 12, 1999
Optical power monitor and optical amplifier having the optical power monitor
FUJITSU LTD57 citations96
US6304371B1Oct 16, 2001
Optical amplifier and an optical amplification method
FUJITSU LTD16 citations92
US6118576ASep 12, 2000
Optical amplifier and an optical amplification method
FUJITSU LTD22 citations92
US7843631B2Nov 30, 2010
Gain control apparatus, optical transmission apparatus, gain control method for optical amplifier, and wavelength multiplex optical transmission system
FUJITSU LTD9 citations84
US7813642B2Oct 12, 2010
Optical transmission apparatus and method of controlling the same
FUJITSU LTD16 citations84
US7139120B2Nov 21, 2006
Optical amplifier with variable gain equalization
FUJITSU LTD11 citations83
US5912760AJun 15, 1999
Light amplifier
FUJITSU LTD14 citations73
US9438275B2Sep 6, 2016
Transmission apparatus and transmission method
FUJITSU LTD3 citations72
US7430372B2Sep 30, 2008
Optical transmission system
FUJITSU LTD8 citations71
US6373624B1Apr 16, 2002
Optical amplifier and an optical amplification method
FUJITSU LTD1 citations62
US7466478B2Dec 16, 2008
Optical-level control method, optical-level control apparatus and wavelength-multiplexing optical network
FUJITSU LTD6 citations59
US7551857B2Jun 23, 2009
Optical transmission system
FUJITSU LTD6 citations58
US7554720B2Jun 30, 2009
Optical transmission apparatus with automatic gain control and automatic level control mode selection
FUJITSU LTD1 citations52
US9419709B2Aug 16, 2016
Transmission device and method for measuring delay
FUJITSU LTD1 citations51