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:
Feb. 28, 2006
Filed:
May. 26, 2004
Lionel Provost, Marcoussis, FR;
Gilles Melin, Orsay, FR;
Andre Le Sauze, Bures sur Yvette, FR;
Anne Fleureau, Loing, FR;
Christian Simonneau, Antony, FR;
Xavier Rejeaunier, Mandelieu la Napole, FR;
Lionel Provost, Marcoussis, FR;
Gilles Melin, Orsay, FR;
Andre Le Sauze, Bures sur Yvette, FR;
Anne Fleureau, Loing, FR;
Christian Simonneau, Antony, FR;
Xavier Rejeaunier, Mandelieu la Napole, FR;
Draka Comteo, , NL;
Abstract
The invention relates to the field of amplifying or emitting optical fibers. It comprises an amplifying optical fiber doped with a rare earth comprising a plurality of successive segments (), presenting a monomode core and a multimode core, presenting at the periphery of the multimode core a peripheral segment () of low index so as to increase the numerical aperture of the optical fiber, outer cladding () being situated at the periphery of the low index peripheral segment (), the multimode core being at least in part above the outer cladding (), the peripheral segment () presenting a decreasing gradient shape.