Inventor
ISHIZAKA MASASHIGE
JP29 patents
⚠️ This page may combine multiple inventors who share the name “ISHIZAKA MASASHIGE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
16 patentsUS6150667ANov 21, 2000
Semiconductor optical modulator
NEC CORP36 citations92
US6477311B2Nov 5, 2002
Method and device for selecting light source for optical communication
NEC CORP15 citations84
US6426236B1Jul 30, 2002
Method for making semiconductor optical modulator
NEC CORP16 citations84
US5757985AMay 26, 1998
Semiconductor mach-zehnder-type optical modulator
NEC CORP19 citations84
US6646775B2Nov 11, 2003
Light source for integrating modulator and module for optical communication
NEC CORP11 citations74
US6318906B1Nov 20, 2001
Optical communication module
NEC CORP12 citations74
US6002510ADec 14, 1999
Driving apparatus for optical modulator and driving apparatus for modulator integrated light source
NEC CORP12 citations74
US5953149ASep 14, 1999
Semiconductor electroabsorption optical modulator
NEC CORP9 citations74
US5655034AAug 5, 1997
Mach-Zehnder type modulator and method of driving the same
NEC CORP13 citations74
US9729246B2Aug 8, 2017
Manufacturing method for a phase modulation system with ultraviolet discharge of accumulated charges
NEC CORP2 citations73
US9628190B2Apr 18, 2017
Optical transmitter and optical communication device
NEC CORP4 citations73
US8379300B2Feb 19, 2013
Wavelength-variable light source with dual resonator loop circuit
NEC CORP2 citations63
US7616843B2Nov 10, 2009
Optical functional device and fabrication process of the same
NEC CORP6 citations63
US5999298ADec 7, 1999
Electroabsorption optical intesity modulator having a plurality of absorption edge wavelengths
NEC CORP5 citations63
US7546005B2Jun 9, 2009
Optical switch and path switching method
NEC CORP1 citations52
US9664981B2May 30, 2017
Integrated light source and light output control method
NEC CORP0 citations42
FUJITSU LTD
10 patentsUS9195001B2Nov 24, 2015
Spot size converter, optical transmitter, optical receiver, optical transceiver, and method of manufacturing spot size converter
FUJITSU LTD29 citations94
US9128240B2Sep 8, 2015
Spot-size converter, manufacturing method thereof, and integrated optical circuit device
FUJITSU LTD25 citations92
US9904011B2Feb 27, 2018
Optical waveguide, optical interposer and light source
FUJITSU LTD12 citations84
US9964704B2May 8, 2018
Spot size converter, light source, optical transmitter, optical receiver and optical transmitter-receiver
FUJITSU LTD5 citations73
US9612411B2Apr 4, 2017
Semiconductor optical waveguide device with an anti-reflection diffraction grating formed on both lateral sides of a core layer along a direction of optical propagation
FUJITSU LTD3 citations73
US9297956B2Mar 29, 2016
Optical device, optical transmitter, optical receiver, optical transceiver, and method of manufacturing optical device
FUJITSU LTD3 citations73
US9429706B2Aug 30, 2016
Optical waveguide coupler and method for manufacturing same
FUJITSU LTD1 citations52
US9235000B2Jan 12, 2016
Optical semiconductor apparatus
FUJITSU LTD0 citations52
US9130352B2Sep 8, 2015
Optical semiconductor device, light emitting device, optical transmitting device, and method of manufacturing optical semiconductor device
FUJITSU LTD0 citations52
US9871347B2Jan 16, 2018
Semiconductor light emitting device and optical transceiver
FUJITSU LTD1 citations49