Low bend loss optical fiber

US8891925B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Scott Robertson Bickham · Corning, US
• Dana Craig Bookbinder · Corning, US
• Jeffrey Coon · Dalton, US
• Ming-Jun Li · Horseheads, US
• Snigdharaj Kumar Mishra · Wilmington, US
• Pushkar Tandon · Corning, US
• James Andrew West · Corning, US

Key dates

• Filing date: Aug 17, 2012
• Grant date: Nov 18, 2014
• Expiry date: Mar 1, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/02266
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical fiber having both low macrobend loss and low microbend loss. The fiber has a first inner cladding region having an outer radius r2>8 microns and refractive index Δ2 and a second outer cladding region surrounding the inner cladding region having refractive index Δ4, wherein Δ1>Δ4>Δ2. The difference between Δ4 and Δ2 is greater than 0.002 percent. The fiber exhibits a 22 m cable cutoff less than or equal to 1260 nm, and r1/r2 is greater or equal to 0.25.