Hydrogen permeation in optical fibres with hermetic carbon coatings

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Hydrogen permeation in optical fibres with hermetic carbon coatings

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© The Institution of Electrical Engineers
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Hydrogen permeation has been measured for optical fibres with hermetic carbon coatings. Data obtained at elevated temperatures and high hydrogen pressures lead to predictions of extremely low permeation rates at typical operating conditions. In situ loss measurements have shown the existence of a lag time, during which no hydrogen reaches a fibre's interior.

Inspec keywords: seals (stoppers); optical fibres; protective coatings

Other keywords: optical fibres; permeation rates; H2; operating conditions; loss measurements; lag time; hermetic carbon coatings; C

Subjects: Optical fibre fabrication, cladding, splicing, joining; Fibre optics

References

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      • Lemaire, P.J., Kranz, K.S., Walker, K.L., Huff, R.G., Dimarcello, F.V.: `Hydrogen permeation in hermetically coated optical fibers', Proceedings of 14th European Conference on Optical Communication, 1988, Brighton, UK.
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      • Huff, R.G., Dimarcello, F.V., Hart, A.C.: `Amorphous carbon hermetically coated optical fibres', Paper TU-G2, Technical digest for optical Fibre Communication Conference, 1988, New Orleans.
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      • A. Tomita , P.J. Lemaire . Hydrogen-induced loss increases in germanium doped single-mode optical fibres: long term predictions. Electron. Lett. , 71 - 72
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      • J. Stone , A.R. Chraplyvy , C.A. Burrus . Gas-in-glass—a new Raman-gain medium: molecular hydrogen in solid-silica optical fibers. Opt. Lett. , 297 - 299
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      • J. Crank . (1956) , The mathematics of diffusion.
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