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Proceedings Paper

Removal Of Fe, Co, Ni, And Cu From Zr For 0.01-Db/Km Fluoride Optical Fibers
Author(s): Philipp H. Klein; Paul E.R. Nordquist; Arnold Singer
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Paper Abstract

For attainment of 0.01-dB/km absorption losses in the 2-4 micrometer range, iron, cobalt, nickel, and copper concentrations in fluoride fibers must lie in the 0.2-10 range. (1 PPB = 1 mol/109 mol glass.) Commercial grades of zirconium salts tend to form colloids and to contain hundreds or thousands of times more than the tolerable concentrations. We have found filtration to be partially effective for colloid removal. Working with rela-tively concentrated (2 molar, about 17% by weight) solutions of Zr salts, we have introduced about 7000 PPB each of Fe, Co, Ni, and Cu. We have determined that all of these metals can readily be removed, by laboratory-scale ion-exchange methods, to meet the absorption stan-dards for 0.01-dB/km absorption.

Paper Details

Date Published: 16 October 1984
PDF: 3 pages
Proc. SPIE 0484, Infrared Optical Materials and Fibers III, (16 October 1984); doi: 10.1117/12.943147
Show Author Affiliations
Philipp H. Klein, Naval Research Laboratory (United States)
Paul E.R. Nordquist, Naval Research Laboratory (United States)
Arnold Singer, Naval Research Laboratory (United States)

Published in SPIE Proceedings Vol. 0484:
Infrared Optical Materials and Fibers III
Paul Klocek, Editor(s)

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