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. 02, 2017
Filed:
Sep. 20, 2013
Draka Comteq Bv, Amsterdam, NL;
DRAKA COMTEQ BV, Amsterdam, NL;
Abstract
The invention relates to an optical fiber comprising an optical core and an optical cladding surrounding the optical core, the optical core having a single α graded-index profile with α≧1, and the optical core having a radius R1 and a maximal refractive index n, said optical cladding having a refractive index n. Said optical cladding comprises a region of depressed refractive index n, having an inner radius R, with R≧R, and an outer radius R3, with R3>R2. According to embodiments of the invention, the α-value of said graded index profile and the optical core radius Rare chosen such that R≧13.5 μm and so as to satisfy a criterion C of quality. Thus, the invention provides a few-mode optical fiber, which allow guiding an increased number of LP modes as compared to prior art FMFs, while reaching the lowest Differential Mode Group Delay. The system reach is thus increased over prior art.