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. 16, 2018
Filed:
Sep. 30, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Nec Corporation, Minato-ku, Tokyo, JP;
The University of Tokyo, Bunkyo-ku, Tokyo, JP;
Nobuaki Hatori, Tsukuba, JP;
Masashige Ishizaka, Minato, JP;
Takanori Shimizu, Minato, JP;
Yasuhiko Arakawa, Bunkyo, JP;
Satoshi Iwamoto, Bunkyo, JP;
Katsuaki Tanabe, Bunkyo, JP;
Abstract
A semiconductor light source includes a substrate, an optical waveguide having a reflection structure provided on the substrate with an oxide film in between and a semiconductor light emitting element provided on the optical waveguide. The optical waveguide includes a constant width core layer portion located in a center portion, tapered core layer portions that are provided on either side of the constant width core layer and of which the core width gradually increases and a constant width core layer portion for an optical wire waveguide. The semiconductor light emitting element is placed so as to cover at least a portion of the tapered core layer portions on both sides.