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:
Dec. 27, 1994
Filed:
Dec. 15, 1989
Genichi Hatakoshi, Yokohama, JP;
Masaki Okajima, Kawasaki, JP;
Kazutaka Terashima, Ebina, JP;
Yutaka Uematsu, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A wavelength converting optical device includes an optical waveguide which has a waveguide portion and a cladding portion, at least one of which is formed of a nonlinear optical material. A fundamental wave, incident on the waveguide portion from an input end face of the waveguide, is converted into an optical second harmonic wave by Cerenkov radiation and is radiated into the cladding portion. The radiated second harmonic wave is output from an output end face of the waveguide. A reflecting film is provided on the emerging end face of the waveguide. The reflecting film includes a high reflectivity with respect to the fundamental wave of a guide mode and a low reflectivity with respect to the optical second harmonic wave. A wave front converting element is arranged to oppose the reflecting film. The converting element has a diffraction grating for converting the second harmonic wave, emerging from the output end face of the waveguide, into a plane wave.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile