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:
Mar. 08, 2011
Filed:
Nov. 20, 2008
Seiji Kojima, Hitachi, JP;
Bing Yao, Hitachi, JP;
Kazumasa Ohsono, Hitachi, JP;
Akihito Hongo, Hitachi, JP;
Akio Sato, Toyota, JP;
Kohei Yanaka, Nishikamo, JP;
Kazuo Hasegawa, Nisshin, JP;
Daisuke Inoue, Nagoya, JP;
Hiroshi Ito, Kasugai, JP;
Tadashi Ichikawa, Nagoya, JP;
Kazuya Saito, Nagoya, JP;
Seiji Kojima, Hitachi, JP;
Bing Yao, Hitachi, JP;
Kazumasa Ohsono, Hitachi, JP;
Akihito Hongo, Hitachi, JP;
Akio Sato, Toyota, JP;
Kohei Yanaka, Nishikamo, JP;
Kazuo Hasegawa, Nisshin, JP;
Daisuke Inoue, Nagoya, JP;
Hiroshi Ito, Kasugai, JP;
Tadashi Ichikawa, Nagoya, JP;
Kazuya Saito, Nagoya, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Toyota School Foundation, Aichi, JP;
Abstract
An optical fiber laser, according to the present invention, has an optical fiber including a core to which a rare earth element is added and a clad disposed around the core, and also has an excitation light source for emitting excitation light incident on a side of the optical fiber. The optical fiber has a corrugated shape on the outer circumference of the clad along the longitudinal direction thereof; and the optical fiber is wound in a spiral form and is bundled in such a way that adjacent sides of the clad are brought into contact with one another.