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:
Jun. 14, 2016
Filed:
Mar. 04, 2013
Ofs Fitel, Llc, Norcross, GA (US);
Lars Gruner-Nielsen, Copenhagen, DK;
Soren Herstrom, Ballerup, DK;
Dan Peter Jakobsen, Copenhagen, DK;
Bera Palsdottir, Copenhagen, DK;
OFS FITEL, LLC, Norcross, GA (US);
Abstract
A highly nonlinear optical fiber having an improved stimulated Brillouin scattering threshold is provided. The fiber includes a central core region made substantially from silica doped with aluminum, a trench region surrounding the central core region, and a silica cladding surrounding the trench region. The refractive index profile of the fiber is optimized. A refractive index difference of the central core region relative to the cladding (Δn+) is less than 26×10, and more preferably at or near 21×10. A refractive index difference of the trench region relative to the cladding (Δn−) is less than −5×10. The trench region is preferably doped with fluorine. The aluminum doping level of the central core region is preferably less than 14 wt % Al. A fiber doped with aluminum having this refractive index profile exhibits a significantly higher figure of merit (PγL) than conventional germanium-doped fibers.