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:
Aug. 23, 2022
Filed:
May. 04, 2020
Applicants:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Toyota School Foundation, Nagoya, JP;
Inventors:
Kazuo Hasegawa, Nagakute, JP;
Daisuke Inoue, Nagakute, JP;
Satoru Kato, Nagakute, JP;
Tomoya Okazaki, Nagakute, JP;
Kazuya Saito, Nagoya, JP;
Arindam Halder, Nagoya, JP;
Assignees:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Toyota School Foundation, Nagoya, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/30 (2006.01); H01S 3/067 (2006.01); H01S 3/16 (2006.01); H01S 3/08 (2006.01);
U.S. Cl.
CPC ...
H01S 3/06716 (2013.01); H01S 3/0675 (2013.01); H01S 3/06729 (2013.01); H01S 3/08045 (2013.01); H01S 3/1698 (2013.01); H01S 3/06754 (2013.01); H01S 3/1618 (2013.01);
Abstract
A first fiber is connected to a first end of a third fiber doped with a rare earth element, and a second fiber is connected to a second end of the third fiber. In the third fiber doped with the rare earth element, a central portion of a core is more heavily doped with the rare earth element than a peripheral portion of the core is.