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. 24, 2013
Filed:
Sep. 18, 2012
Fujikura Ltd., Tokyo, JP;
Tomoharu Kitabayashi, Sakura, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
An optical fiber amplifier () includes: a first pumping source (); a second pumping source (); an amplification optical fiber () in which an active element is doped; a first optical filter () coupled to the first pumping source () and one end of the amplification optical fiber (), the first optical filter () transmitting a light at a wavelength the same as the wavelength of a first pumping light and reflecting a light at a wavelength the same as the wavelength of a second pumping light; and a second optical filter () coupled to the second pumping source () and the other end of the amplification optical fiber (), the second optical filter () transmitting a light at a wavelength the same as the wavelength of the second pumping light and reflecting a light at a wavelength the same as the wavelength of the first pumping light.