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:
Jan. 30, 2007
Filed:
Dec. 22, 2003
Kiminori Mizuuchi, Neyagawa, JP;
Kazuhisa Yamamoto, Takatsuki, JP;
Minoru Imaeda, Nagoya, JP;
Tatsuo Kawaguchi, Motosu-gun, JP;
Takashi Yoshino, Ama-gun, JP;
Kiminori Mizuuchi, Neyagawa, JP;
Kazuhisa Yamamoto, Takatsuki, JP;
Minoru Imaeda, Nagoya, JP;
Tatsuo Kawaguchi, Motosu-gun, JP;
Takashi Yoshino, Ama-gun, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
NGK Insulators, Ltd., Aichi, JP;
Abstract
An optical waveguide device includes a waveguide layer that converts a wavelength of incident light and emits converted light. In the waveguide layer, a ridge waveguide and slab waveguides are provided, the slab waveguides being formed on both sides of the ridge waveguide with recess portions intervening therebetween. The waveguide layer satisfies a multi-mode condition for the incident light, and light propagating through the ridge waveguide is in a single mode.