Inventor
NAGARA TAKAMITSU
JP3 patents
Patents
3 patentsUS6356692B1Mar 12, 2002
Optical module, transmitter, receiver, optical switch, optical communication unit, add-and-drop multiplexing unit, and method for manufacturing the optical module
HITACHI LTD64 citations94
US6671438B2Dec 30, 2003
Optical waveguide, optical module, and their fabrication method
HITACHI LTD24 citations90
US6810189B2Oct 26, 2004
Optical waveguide and method for preparing the same
HITACHI LTD6 citations61