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. 19, 2012
Filed:
Oct. 28, 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 apparatus, comprising an optical fiber having a wavelength of operation, the optical fiber comprising an inner core, the inner core supporting a fundamental mode and at least first and second higher order modes (HOMs) at the wavelength of operation; a first ring-shaped core region spaced from and disposed about the inner core; a second ring-shaped core region spaced from and disposed about the ring-shaped core region; and wherein the optical fiber is configured and arranged such that the first HOM optically interacts with the first ring-shaped core region and the second HOM optically interacts with the second ring-shaped core region.