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:
Sep. 04, 1990
Filed:
Dec. 19, 1989
Ibiden Co., Ltd., Gifu-Ken, JP;
Abstract
A second harmonic wave generating device comprising a LiNbO.sub.3 thin film waveguide layer formed on a LiTaO.sub.3 substrate, in which the LiTaO.sub.3 substrate has an ordinary refractive index (n.sub.oS1) of 2.10 to 2.20 at the fundamental wavelength (.lambda..mu.m) and an extraordinary refractive index (n.sub.eS2) of 2.22 to 2.28 at the second harmonic wavelength (.lambda..mu.m/2), and the ordinary refractive index (n.sub.oF1) at the fundamental wavelength (.lambda..mu.m) of the LinBO.sub.3 thin film waveguide layer, the extraordinary refractive index (n.sub.eS2) at the second harmonic wavelength (.lambda..mu.m/2) of the LiTaO.sub.3 substrate, and the extraordinary refractive index (n.sub.eF2) at the second harmonic wavelength (.lambda..mu.m/2) of the LiNbO.sub.3 thin film waveguide layer have the relation ##EQU1##