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. 23, 2015
Filed:
Nov. 22, 2011
César Jauregui Misas, Jena, DE;
Fabian Stutzki, Jena, DE;
Jens Limpert, Jena, DE;
Florian Jansen, Jena, DE;
Andreas Tuennermann, Weimar, DE;
César Jauregui Misas, Jena, DE;
Fabian Stutzki, Jena, DE;
Jens Limpert, Jena, DE;
Florian Jansen, Jena, DE;
Andreas Tuennermann, Weimar, DE;
Abstract
The invention relates to a double-sheath fiber having a core region () and a sheath region, the sheath region having an inner region () and an outer region (), which comprises a refractive index that is lower with respect to that of the inner region () and the core region (), wherein the outer region () surrounds the inner region (). The invention proposes an internal structure () of the inner region () which effects a spatial overlap of modes of higher order with the core region (), which is lower than the spatial overlap of a fundamental mode with the core region ().