Removal Of Fe, Co, Ni, And Cu From Zr For 0.01-Db/Km Fluoride Optical Fibers

Philipp H. Klein; Paul E.R. Nordquist Jr.; Arnold Singer

doi:10.1117/12.943147

16 October 1984 Removal Of Fe, Co, Ni, And Cu From Zr For 0.01-Db/Km Fluoride Optical Fibers

Philipp H. Klein, Paul E.R. Nordquist Jr., Arnold Singer

Proceedings Volume 0484, Infrared Optical Materials and Fibers III; (1984) https://doi.org/10.1117/12.943147
Event: 1984 Technical Symposium East, 1984, Arlington, United States

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.

Citation Download Citation

Philipp H. Klein, Paul E.R. Nordquist Jr., and Arnold Singer "Removal Of Fe, Co, Ni, And Cu From Zr For 0.01-Db/Km Fluoride Optical Fibers", Proc. SPIE 0484, Infrared Optical Materials and Fibers III, (16 October 1984); https://doi.org/10.1117/12.943147

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