Patent · US Active

Bend insensitive optical fibers

US7680381B1 · kind B1 · utility

11Cited by

0References

20Claims

0Family size

Assignee

CORNING INCORPORATED · US

Inventors

Dana Craig Bookbinder · Corning, US
Ming-Jun Li · Horseheads, US
Ji Wang · Corning, US

Key dates

Filing date	Nov 25, 2008
Grant date	Mar 16, 2010
Priority date	—
Expiry date	Nov 25, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/03633
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical fiber includes a core, an inner cladding and a low index ring of silica-based glass. The core comprises silica-based glass, an index of refraction n1, and a relative refractive index percent Δ1% relative to pure silica glass. The inner cladding surrounds the core and comprises an index of refraction n2 and a relative refractive index percent Δ2% relative to pure silica glass, wherein Δ1%>Δ2% and the difference between Δ1% and Δ2% is greater than about 0.1%. The low index ring surrounds the inner cladding and comprises silica glass co-doped with boron and fluorine, a radial thickness of less than about 20 μm, an index of refraction n3 and a third relative refractive index percent change Δ3% relative to pure silica glass, wherein Δ2%>Δ3% and Δ3% is less than about −1.0%.

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