Patent · US Expired

Method of processing high purity low-OH vitreous silica fibers

US4685945A · kind A · utility

19Cited by
2References
8Claims
0Family size

Inventor

Key dates

Filing dateApr 21, 1986
Grant dateAug 11, 1987
Priority date—
Expiry dateApr 21, 2006

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S65/90
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

A method of achieving long-term stability in the transmission properties of high purity low-hydroxyl vitreous silica optical waveguide fibers having preexisting peroxy linkages disposed therein in which the peroxy linkages are exposed to deuterium molecules and the reaction between the deuterium molecules and the peroxy linkages to form deuteroxyl group is substantially enhanced by simultaneously or sequentially exposing the permeated fibers to a light source having an intensity of at least 10 Lambert Units and a wave length of from the short wave length absorption edge of vitreous silica up to about 650 nanometers until the absorption at 1.7 micrometers reaches saturation.

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