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. 06, 2004
Filed:
Dec. 19, 2002
Leonard R. Kent, Corning, NY (US);
Gregory G. Luther, W. Hartford, CT (US);
William A. Wood, Painted Post, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
An optical waveguide amplifier fiber comprises a core region at least in part comprises Er O , Al O , GeO and Ga O . The amplifier fiber also comprises an inner clad surrounding the core region, and an outer clad surrounding the inner clad. The relative refractive index percentages and radii of the core region, inner clad and outer clad are chosen from the following ranges: the relative refractive index percent of the core segment within the range of from about 0.5% to about 1.2%; the relative refractive index percent of the inner clad within the range of from about 0.0% to about 0.3%; the outer radius of the core region within the range of from about 2.0 &mgr;m to about 5.0 &mgr;m; and, the outer radius of the inner clad within the range of from about 3.8 &mgr;m to about 10.2 &mgr;m. The amounts of Er O , Al O , GeO and Ga O within the core region, and the relative refractive index percentages in the radii of the core region, inner clad and outer clad are selected to provide an effective area of greater than or equal to about 38.6 &mgr;m at a wavelength of 1590 nm.