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US 2011/0211796 A1Published application
Low bend loss optical fiber
AssigneeCorning Incorporated
InventorsDana Craig Bookbinder, Ming-Jun Li, Pushkar Tandon
Life of this patent
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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 Δ3, wherein Δ1>Δ3>Δ2. The difference between Δ3 and Δ2 is greater than 0.01. 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.
Claims17
An optical fiber comprising:
- a germania doped central core region having outer radius r1 and refractive index Δ1 a cladding region comprising 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 and comprising refractive index Δ3, wherein Δ1>Δ3>Δ2, and wherein the difference between Δ3 and Δ2 is greater than 0.01, said fiber exhibits a 22 m cable cutoff less than or equal to 1260 nm, and r1/r2 is greater or equal to 0.25.
A single mode optical fiber comprising
- a central core region having outer radius r1 and refractive index Δ1
- a cladding region comprising fluorine doped silica, said cladding comprising a first inner cladding region having outer radius r2 and refractive index Δ2 and a second outer cladding region having refractive index Δ3, wherein r1/r2 is greater than 0.25.
Dependencies are inferred from the claim text.