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 fundamental wavelength (.lambda..mu.m), the thickness (T .mu.m) of the LiNbO.sub.3 thin film waveguide layer, the ordinary refractive index (n.sub.oS1) of the LiTaO.sub.3 substrate at the fundamental wavelength (.lambda..mu.m), the ordinary refractive index (n.sub.oF1) of the LiNbO.sub.3 thin film waveguide layer at the fundamental wavelength (.lambda..mu.m), the extraordinary refractive index (n.sub.eS2) of the LiTaO.sub.3 substrate at a second harmonic wavelength (.lambda..mu.m/2), and the extraordinary refractive indes (n e F 2) of the LiNbO.sub.3 thin film waveguide layer at the second harmonic wavelength (.lambda..mu.m/2) are individually within the following specific ranges: