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US 6,772,611 B2Granted
Making a glass rod with a step of measuring an incremental weight gain
AssigneeSandia National Laboratories
InventorsDahv A. V. Kliner, Jeffery P. Koplow
Life of this patent
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Abstract
The present invention provides a simple method for fabricating fiber-optic glass preforms having complex refractive index configurations and/or dopant distributions in a radial direction with a high degree of accuracy and precision. The method teaches bundling together a plurality of glass rods of specific physical, chemical, or optical properties and wherein the rod bundle is fused in a manner that maintains the cross-sectional composition and refractive-index profiles established by the position of the rods.
Claims4
A method for providing a high purity glass rod, comprising the steps of:
- providing one or more reactant materials;
- separately reacting each of said one or more reactant materials by separately heating each of said one or more reactant materials in the presence of oxygen contained in a flowing gas stream to provide one or more oxides;
- collecting said one or more oxides as dispersed powders in a silica ampule, wherein the step of collecting includes collecting a predetermined quantity of said one or more oxide powders by measuring an incremental weight gain of said silica ampule as said one or more oxide powders are collected;
- melting said one or more collected oxide powders and said silica ampule to form a substantially uniform glass boule;
- and
- drawing said boule into said glass rods.
3 more elements
Dependencies are inferred from the claim text.