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:
Nov. 12, 2013
Filed:
May. 27, 2010
Valentin Gapontsev, Worcester, MA (US);
Vladimir Grigoriev, Burbach, DE;
Volodia Sergueev, Siegen, DE;
Ilia Zaytsev, Burbach, DE;
Valentin Gapontsev, Worcester, MA (US);
Vladimir Grigoriev, Burbach, DE;
Volodia Sergueev, Siegen, DE;
Ilia Zaytsev, Burbach, DE;
IPG Photonics Corporation, Oxford, MA (US);
Abstract
A twin fiber laser arrangement is configured with active and passive fibers supporting respective signal and pump lights and a reflective coating surrounding the fibers along a section of the arrangement. The passive fiber has regions covered by respective protective layer and coating-free regions alternating with the layer covered regions, wherein the reflective coating is configured to overlap the protective layer which shields the end of the reflective coating from high power pump light.