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:
May. 12, 2015
Filed:
Apr. 19, 2013
Valentin I Gapontsev, Worcester, MA (US);
Mikhail Vyatkin, Fryazino, RU;
Vladimir Sergueev, Burbach, DE;
Dan Myasnikov, Moscow, RU;
Ilya Zaytsev, Burbach, DE;
Valentin I Gapontsev, Worcester, MA (US);
Mikhail Vyatkin, Fryazino, RU;
Vladimir Sergueev, Burbach, DE;
Dan Myasnikov, Moscow, RU;
Ilya Zaytsev, Burbach, DE;
IPG Photonics Corporation, Oxford, MA (US);
Abstract
An optical active fiber is configured with an asymmetrically-shaped core having at least one long axis and a shortest axis which extends transversely to the long axis. The outmost cladding of the active fiber is configured with a marking indicating the orientation of the short axis. The marking allows for bending the fiber so that the shortest axis extends along and lies in the plane of the bend thereby minimizing distortion of a mode which is guided by the asymmetrically-shaped core as light propagates along the bend.