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:
Jul. 22, 2014
Filed:
Nov. 07, 2008
Christian Simonneau, Nozay, FR;
Ekaterina Burov, Boulogne-Billancourt, FR;
Sébastien Fevrier, Limoges, FR;
Christian Simonneau, Nozay, FR;
Ekaterina Burov, Boulogne-Billancourt, FR;
Sébastien Fevrier, Limoges, FR;
Alcatel Lucent, Boulogne Billancourt, FR;
Abstract
Device for the emission or amplification of a signal, comprising an optical fiber () having a solid core () of refractive index n, made of a silica glass doped with a rare earth, such as erbium, ytterbium or neodymium, said core being surrounded by an optical cladding () comprising at least a pair of silica layers composed of a first, inner layer (), having a refractive index greater than the refractive index nof the core (), covered by a second, outer layer (). The optical fiber () comprises several pairs of silica layers () around the core (), each pair comprising an inner layer () of refractive index nand an outer layer () of refractive index n, the refractive index nof the outer layer being lower that the refractive index nof the inner layer of the same pair.