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. 22, 2019
Filed:
Feb. 28, 2017
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Photonics Electronics Technology Research Association, Bunkyo-ku, JP;
Hirotaka Uemura, Kawasaki, JP;
Haruhiko Yoshida, Funabashi, JP;
Kazuya Ohira, Tokyo, JP;
Mizunori Ezaki, Yokohama, JP;
Norio Iizuka, Kawasaki, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Photonics Electronics Technology Research Association, Bunkyo-ku, JP;
Abstract
According to one embodiment, a semiconductor light-emitting element includes a ring-shaped light-emitting portion provided on a substrate, a mode-control light waveguide of Si provided on an upper or a lower surface side of the light-emitting portion, and including at least two portions located close to the light-emitting portion, and an output light waveguide of Si provided on the upper or the lower surface side, and including a portion located close to the light-emitting portion. The mode-control light waveguide has a structure for coupling light traveling in one of a clockwise circulating mode and a counterclockwise circulating mode, and feeding back the light in the other of the clockwise circulating mode and the counterclockwise circulating mode.