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:
Apr. 08, 2014
Filed:
Mar. 14, 2012
Scott Robertson Bickham, Corning, NY (US);
Ming-jun LI, Horseheads, NY (US);
Daniel Aloysius Nolan, Corning, NY (US);
Ji Wang, Painted Post, NY (US);
Scott Robertson Bickham, Corning, NY (US);
Ming-Jun Li, Horseheads, NY (US);
Daniel Aloysius Nolan, Corning, NY (US);
Ji Wang, Painted Post, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A few mode optical fiber suitable for use in a mode division multiplexing (MDM) optical transmission system is disclosed. The optical fiber has a graded-index core with a radius Rin the range from 8 μm to 14 μm, an alpha value greater than or equal to about 2.3 and less than about 2.7 at a wavelength of 1550 nm, and a maximum relative refractive index Δfrom about 0.3% to about 0.6% relative to the cladding. The optical fiber also has an effective area greater than about 90 μmand less than about 160 μm. The core and cladding support only the LPand LPmodes at wavelengths greater than 1500 nm. The cladding has a maximum relative refractive index Δsuch that Δ>Δ, and the differential group delay between the LPand LPmodes is less than about 0.5 ns/km at a wavelength of 1550 nm.