Multimode optical fibers for attenuators

US10162109B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Kevin Wallace Bennett · Hammondsport, US
• Scott Robertson Bickham · Corning, US
• Dana Craig Bookbinder · Corning, US
• Robert Arnold Knowlton · Wellsboro, US
• Ming-Jun Li · Horseheads, US
• Pushkar Tandon · Corning, US

Key dates

• Filing date: Jan 26, 2018
• Grant date: Dec 25, 2018
• Expiry date: Jan 26, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/0365
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

According to embodiments, an optical fiber may include a core portion comprising a radius rC, a centerline CL, a numerical aperture NA greater than or equal to 0.15 and less than or equal to 0.25, a graded relative refractive index profile having a maximum relative refractive index ΔCmax and an α value greater than or equal to 1 and less than or equal to 3. The core portion may include an up-dopant with a graded concentration from the radius rC to the centerline CL and an attenuation dopant with a constant concentration from the centerline CL of the core portion to the radius rC of the core portion. The optical fiber is multi-moded for wavelengths of light within a range from 800 nm to 1350 nm and an attenuation of the optical fiber wavelengths between 800 nm and 1000 nm is greater than or equal to 0.5 dB/m.