Inventor
KATAGIRI YOSHITADA
JP12 patents
Patents
12 patentsUS6157025ADec 5, 2000
Disk shaped tunable optical filter
NIPPON TELEGRAPH & TELEPHONE76 citations95
US5497390AMar 5, 1996
Polarization mode switching semiconductor laser apparatus
NIPPON TELEGRAPH & TELEPHONE66 citations94
US7139491B2Nov 21, 2006
Laser oscillator, optical communication method and system
NIPPON TELEGRAPH & TELEPHONE25 citations92
US7050723B2May 23, 2006
Laser oscillator, optical communication method and system
NIPPON TELEGRAPH & TELEPHONE16 citations92
US6695471B2Feb 24, 2004
Method and apparatus for measuring temperature of movable object
NIPPON TELEGRAPH & TELEPHONE24 citations92
US6475557B1Nov 5, 2002
Method for manufacturing optical filter
NIPPON TELEGRAPH & TELEPHONE32 citations92
US6370169B1Apr 9, 2002
Method and apparatus for controlling optical wavelength based on optical frequency pulling
NIPPON TELEGRAPH & TELEPHONE29 citations92
US6359724B1Mar 19, 2002
Light generation method and light source
NIPPON TELEGRAPH & TELEPHONE29 citations92
US4860276AAug 22, 1989
Micro optical head with an optically switched laser diode
NIPPON TELEGRAPH & TELEPHONE40 citations87
US6909732B2Jun 21, 2005
Method and apparatus for controlling optical wavelength based on optical frequency pulling
NIPPON TELEGRAPH & TELEPHONE6 citations73
US5504722AApr 2, 1996
Magneto-optic information storage system utilizing a TE/TM mode controlling laser diode
NIPPON TELEGRAPH & TELEPHONE14 citations72
US7023887B2Apr 4, 2006
Method and system for controlling optical wavelength based on optical frequency pulling
NIPPON TELEGRAPH & TELEPHONE2 citations62