Optical waveguide article including a fluorine-containing zone

US6690868B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Mark T. Anderson · Woodbury, US
• Craig R. Schardt · Saint Paul, US
• James Onstott · Beldenville, US
• Lawrence J. Donalds · Windom, US
• Alessandra Chiareli · Saint Paul, US

Key dates

• Filing date: Aug 21, 2001
• Grant date: Feb 10, 2004
• Expiry date: Mar 27, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/06754
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical article including a core; at least one cladding layer; and a narrow fluorine reservoir between the core and the cladding layer. The fluorine reservoir has a higher concentration of fluorine than either the cladding layer or the core. One particular embodiment includes a core including a halide-doped silicate glass that comprises approximately the following in cation-plus-halide mole percent 0.25-5 mol % Al2O3, 0.05-1.5 mol % La2O3, 0.0005-0.75 mol % Er2O3, 0.5-6 mol % F, 0-1 mol % Cl.