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:
Aug. 23, 2022
Filed:
Jun. 29, 2018
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite DE Lille, Villeneuve d'Ascq, FR;
Jean-Baptiste Trinel, Loison Sous Lens, FR;
Guillaume Le Cocq, Lambersart, FR;
Laurent Bigot, Hellemmes-Lille, FR;
GĂ©raud Bouwmans, Cysoing, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
UNIVERSITE DE LILLE, Villeneuve d'Ascq, FR;
Abstract
According to one aspect, a few-mode amplifying fiber in a given spectral band of use is provided. The few-mode amplifying fiber comprises a cladding having a given refractive index (n) and at least one core of refractive index and of dimensions suited to the propagation of a finite number of spatial modes in the spectral band of use of the fiber, a spatial propagation mode corresponding to a channel for transporting information. The core comprises a first solid material having a given first refractive index (n) strictly greater than the refractive index of the cladding (n), and, within said first material, inclusions spatially separated from one another, formed by longitudinal bars comprising a second solid material having a second refractive index (n) strictly greater than the first refractive index (n), at least one of said inclusions being actively doped.