Patent · US Active

Large effective area low attenuation optical fiber

US8218929B2 · kind B2 · utility

241Cited by

2References

19Claims

0Family size

Assignee

CORNING INCORPORATED · US

Inventors

Scott Robertson Bickham · Corning, US
Ming-Jun Li · Horseheads, US

Key dates

Filing date	Jan 21, 2010
Grant date	Jul 10, 2012
Priority date	—
Expiry date	Aug 15, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/02266
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Optical waveguide fiber that has large effective area and low loss characteristics, such as low attenuation and low bend loss. The optical waveguide fiber includes a dual trench design wherein an annular region closer to the core is preferably doped with at least one downdopant such as fluorine, which annular region is surrounded by another annular region that preferably includes closed, randomly dispersed voids.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.