Co-alkali doped optical fibers
AssigneeCorning Incorporated
InventorsSushmit Sunil Kumar Goyal, Rostislav Radiyevich Khrapko, Craig Daniel Nie, Benjamin Pelham Schrock, Samuel David Stewart, Pushkar Tandon
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Abstract
An optical fiber comprising a core region doped with a first alkali dopant and a second alkali dopant. The first alkali dopant has a first average core concentration of C1 and a first diffusivity D1. The second alkali dopant has a second average core concentration of C2 and a second diffusivity D2. An outer cladding region surrounds the core region. The diffusivities D1, D2 of the first and second alkali dopants satisfy the relation D1>D2. The average core concentrations C1, C2 of the first and second alkali dopants satisfy the relation 0.1≤C2/C1≤1.
Claims20
An optical fiber comprising:
- a core region comprising silica glass doped with a first alkali dopant and a second alkali dopant, the first alkali dopant having a first average core concentration C1 and a first diffusivity D1, the second alkali dopant having a second average core concentration C2 and a second diffusivity D2, the second diffusivity D2 less than the first diffusivity D1;
- and
- a cladding region surrounding the core region;
- wherein the first average core concentration C1 and the second average core concentration C2 satisfy a relation 0.10≤C2/C1≤1.00.
Dependencies are inferred from the claim text.