The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2002
Filed:
Mar. 16, 1999
Applicant:
Inventors:
Takumi Fujiwara, Nagoya, JP;
Akira Ikushima, Nagoya, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/00 ; G02B 6/10 ;
U.S. Cl.
CPC ...
G02B 6/00 ; G02B 6/10 ;
Abstract
A metal film ( ) is formed on the surface of a glass substrate ( ) and etched to form a pair of electrodes ( and ) which face each other with a certain gap therebetween (S ˜S ). The substrate ( ) is doped with germanium, etc, by using the electrodes ( and ) as a mask to form a core part ( S ). Then a high voltage is applied between the electrodes while ultraviolet radiation is applied and the core part ( ) is subjected to ultraviolet-driven boring to give the optical nonlinearity to the core part ( S ). The voltage application to the core part ( ) having the optical nonlinearity is controlled to control a light transmitting through the core part ( ).