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:
May. 09, 2006
Filed:
May. 13, 2002
Phong Diep, Horseheads, NY (US);
James C. Fajardo, Painted Post, NY (US);
Ming-jun LI, Horseheads, NY (US);
Daniel A. Nolan, Corning, NY (US);
Gang Qi, Painted Post, NY (US);
Phong Diep, Horseheads, NY (US);
James C. Fajardo, Painted Post, NY (US);
Ming-Jun Li, Horseheads, NY (US);
Daniel A. Nolan, Corning, NY (US);
Gang Qi, Painted Post, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
Disclosed is a single mode optical waveguide fiber having a low cut off wavelength, and mode field diameter and bend resistance similar to step index single mode optical waveguide fiber designed for use at 1310 nm. By including a clad region of raised refractive index spaced apart from the core region of the single mode optical waveguide fiber, the cut off wavelength can be reduced to 850 nm. The single mode optical waveguide fiber in accord with the invention may also have a core region having a reduced refractive index on centerline surrounded by a region of higher refractive index and a clad region which is substantially uniform. The single mode optical waveguide fiber is thus ideally suited for use with the low cost, reliable VCSEL operating at 850 nm, a Fabry-Perot laser operating at 1310 nm, or a distributed feedback laser operating at 1550 nm thereby enabling low cost, easily installed, home access portions of the broadband telecommunications system.