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:
Feb. 17, 2009
Filed:
Dec. 22, 2006
Almantas Galvanauskas, Ann Arbor, MI (US);
Donald J. Harter, Ann Arbor, MI (US);
Martin E. Fermann, Ann Arbor, MI (US);
Ferenc Raksi, Ann Arbor, MI (US);
Almantas Galvanauskas, Ann Arbor, MI (US);
Donald J. Harter, Ann Arbor, MI (US);
Martin E. Fermann, Ann Arbor, MI (US);
Ferenc Raksi, Ann Arbor, MI (US);
Aisin Seiki Co., Ltd., Aichi, JP;
Abstract
A fiber amplifier includes at least one coreless end used for the input or extraction of optical energy. The coreless end has a transverse cross section which differs from the transverse cross section of the core at fiber locations remote from the end, so that the diameter of the input or extracted optical beam at the coreless end can be larger than the diameter of the fiber core, to increase an optical damage threshold of the fiber amplifier.