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:
Aug. 16, 1994
Filed:
Apr. 16, 1993
Applicant:
Inventors:
Yukihiro Yamamoto, Kawasaki, JP;
Noriko Yamada, Kawasaki, JP;
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359332 ; 359328 ; 385122 ;
Abstract
An optical waveguide second harmonic generating element comprises a KTP single-crystal substrate sliced at a z-plane, a plurality of polarization reversal areas having spontaneous polarization, whose direction is reversed, and formed periodically along a predetermined direction on the z-plane of the substrate, and a channel waveguide, extending along the predetermined direction across polarization reversal areas, for propagating a light.