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:
Mar. 18, 2014
Filed:
Nov. 11, 2010
David Boivin, Longjumeau, FR;
Alain Pastouret, Massy, FR;
Ekaterina Burov, Boulogne-Billancourt, FR;
Cedric Gonnet, Paris, FR;
David Boivin, Longjumeau, FR;
Alain Pastouret, Massy, FR;
Ekaterina Burov, Boulogne-Billancourt, FR;
Cedric Gonnet, Paris, FR;
Draka Comteq, B.V., Amsterdam, NL;
Abstract
The present invention embraces an amplifying optical fiber having a central core adapted to convey and amplify an optical signal and a cladding that surrounds the central core to confine the optical signal conveyed in the central core. The central core is formed of a core matrix in which nanoparticles are present. The nanoparticles themselves include a nanoparticle matrix and rare-earth-dopant elements. The core matrix may also include one or more additional dopants (i.e., in addition to nanoparticles). The amplifying optical fiber possesses a small numerical aperture and is suitable for use in high-pump-power applications without a degraded gain shape.