High absorption erbium doped amplifying optical fiber

US6819846B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Rachel S. Mozdy · Elmira, US
• Atul Pradhan · Pittsford, US
• Frances M. Smith · Elmira, US
• William Allen Wood · Corning, US

Key dates

• Filing date: Jul 26, 2002
• Grant date: Nov 16, 2004
• Expiry date: Apr 29, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/1608
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical waveguide fiber amplifier comprising a core region comprises at least in part between 1300 wt.ppm and 3600 wt.ppm Er2O3, between 6.0 wt. % to 10.0 wt. % Al2O3 and between 9.0 wt. % and 20.0 wt. % GeO2. The amplifier also comprising 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 2.0%; the relative refractive index percent of the inner clad within the range of from about 0.0% to about 0.4%; the outer radius of the core region within the range of from about 0.7 &mgr;m to about 1.5 &mgr;m; and, the outer radius of the inner clad within the range of from about 4.3 &mgr;m to about 18.8 &mgr;m.