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. 09, 2012
Filed:
Oct. 15, 2009
Valentin P Gapontsev, Worcester, MA (US);
Nikolai Platonov, Worcester, MA (US);
Roman Yagodkin, Worcester, MA (US);
Volodia Sergueev, Burbach, DE;
Valentin P Gapontsev, Worcester, MA (US);
Nikolai Platonov, Worcester, MA (US);
Roman Yagodkin, Worcester, MA (US);
Volodia Sergueev, Burbach, DE;
IPG Photonics Corporation, Oxford, MA (US);
Abstract
Optical fiber apparatus having a wavelength of operation, that comprises an optical fiber including a core comprising an active material for providing light having the operating wavelength responsive to the optical apparatus receiving pump optical energy having a pump wavelength; a cladding disposed about the core; at least one region spaced from the core; and wherein the optical fiber is configured and arranged such that at the wavelength of operation the optical fiber can propagate a plurality of modes and wherein the optical fiber comprises a fundamental mode that is primarily a mode of the core and at least one higher order mode (HOM) that is a mixed mode of a selected mode of the core and of a selected mode of the at least one region.