Study of Degradation of Optical Fiber in Copper Coating

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Abstract

It has been shown that the strength of copper-coated optical fiber in air at elevated temperatures decreases over time, primarily due to degradation of the copper coating due to oxidation, which leads to the appearance and growth of point defects on the surface of silica glass. In this case, the optical fibers remain operational at 600°C for ~1.5 hours, and at 500°C for ~16 hours. The activation energy of the process is in the range of 120–123 kJ/mol. The results obtained make it possible to predict the stability of the optical fibers in air at 300°C for ~1.5 years, and at 250°C for ~17 years.

About the authors

M. I. Bulatov

Perm National Research Polytechnic University; Perm Scientific-Industrial Instrument-Making Company

Email: sls@fo.gpi.ru
Russian Federation, Perm; Perm

N. S. Grigoryev

Perm Scientific-Industrial Instrument-Making Company

Email: sls@fo.gpi.ru
Russian Federation, Perm

A. V. Fofanov

Perm Scientific-Industrial Instrument-Making Company

Email: sls@fo.gpi.ru
Russian Federation, Perm

A. F. Kosolapov

Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center

Email: sls@fo.gpi.ru
Russian Federation, Moscow

S. L. Semyonov

Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center

Author for correspondence.
Email: sls@fo.gpi.ru
Russian Federation, Moscow

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