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:
Jun. 28, 2005
Filed:
Mar. 25, 2004
Yasutake Ohishi, Nagoya, JP;
Koichi Nakagawa, Tomobe-machi, JP;
Terutoshi Kanamori, Mito, JP;
Yousuke Hiraki, Hitachinaka, JP;
Yasutake Ohishi, Nagoya, JP;
Koichi Nakagawa, Tomobe-machi, JP;
Terutoshi Kanamori, Mito, JP;
Yousuke Hiraki, Hitachinaka, JP;
NTT Electronics Corporation, Tokyo, JP;
Abstract
An ASE light source offers high outputs even in a wavelength band of 1,490 to 1,525 nm. The ASE light source outputs spontaneous emission light generated from Tm-doped optical fibers. Then, the ASE light source outputs amplified light obtained by using Er-doped optical fibers to amplify the output from the Tm-doped optical fibers and spontaneous emission light generated from the Er-doped optical fibers so that the amplified light and the spontaneous emission light are superimposed on each other.