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:
Oct. 29, 2013
Filed:
May. 26, 2010
Kensuke Shima, Sakura, JP;
Kensuke Shima, Sakura, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
[Object] An object of the invention is to provide a fiber laser device capable of stabilizing intensity of laser light output therefrom. [Means to attain the object] A fiber laser deviceincludes: an pumping light sourceconfigured to output pumping light; a rare earth-doped fiberto which the pumping light is input; and a first FBGformed on one side of the rare earth-doped fiberand a second FBGformed on the other side of the rare earth-doped fiberthat are configured to reflect light amplified in the rare earth-doped fiber, wherein the second FBGhas a reflectance lower than that of the first FBG, a reflection wavelength band in that of the first FBG, and Bragg wavelength on short wavelength side of Bragg wavelength of the first FBG