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. 17, 2024
Filed:
Jun. 10, 2019
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Suguru Yamaoka, Tokyo, JP;
Ryo Nakao, Tokyo, JP;
Takaaki Kakitsuka, Tokyo, JP;
Shinji Matsuo, Tokyo, JP;
Assignee:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01); H01S 5/02 (2006.01); H01S 5/028 (2006.01); H01S 5/065 (2006.01); H01S 5/10 (2021.01); H01S 5/125 (2006.01); H01S 5/20 (2006.01); H01S 5/22 (2006.01); H01S 5/32 (2006.01); H01S 5/343 (2006.01); H01S 3/063 (2006.01);
U.S. Cl.
CPC ...
H01S 5/1028 (2013.01); H01S 5/021 (2013.01); H01S 5/028 (2013.01); H01S 5/0657 (2013.01); H01S 5/125 (2013.01); H01S 5/2022 (2013.01); H01S 5/2219 (2013.01); H01S 5/3214 (2013.01); H01S 5/34306 (2013.01); H01S 3/063 (2013.01);
Abstract
A device includes a first cladding layer, a waveguide laser, an absorption layer, and a second cladding layer. The absorption layer is constituted by an oversaturation absorption body such as graphene. Also, the absorption layer is provided between the active layer and the distributed Bragg reflection portion. The absorption layer is formed below a core forming an optical waveguide between the active layer and a distributed Bragg reflection portion.