Optical fibers having high infrared transmittancy
AssigneeJenaer Glaswerk Schott & Gen.
InventorsGeorg Gliemeroth, Lothar Meckel
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Abstract
Optical fibers having high infrared transmittancies are produced by chemical vapor deposition of vitreous layers composed predominantly of anions S, Se and/or Te onto tubes or rods. Cations are Ge, Si, P, B, As, Sb and/or Ti. Conventional CVD techniques are employed to produce stepped-refractive index gradient profiles in the fibers except that an inert gas and/or a halogen(s) is used as the propellant gas.
Claims12
In an optical fiber having infrared transmittancy, and a refractive index gradient, and which is prepared by chemical vapor deposition, the improvement wherein in the vitreous, light-conducting region of the fiber, the anions are predominantly S, Se, Te or combinations thereof, and the cations are Ge, Si, P, B, Sb, Ti or combinations thereof.
In an optical fiber having infrared transmittancy, and a refractive index gradient, and which is prepared by chemical vapor deposition, the improvement wherein the anions in the vitreous, light-conducting region of the fiber are predominantly S, Se, Te or combinations thereof and the cations in the vitreous, light-conducting region are Ge, Si, P, B, As, Sb, Ti or combinations thereof;
- and wherein the relative amounts of cations and anions are limited in accordance with the boundary conditions shown in FIGS. 3a-3i.
Dependencies are inferred from the claim text.