Raman spectra of hydrogen-treated optical fibres |
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| Authors: | Bibby G.W. Ross J.N. |
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| Affiliation: | Central Electricity Generating Board, Central Electricity Research Laboratories, Leatherhead, UK; |
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| Abstract: | Chemical reactions in a Ge-P-silicate optical fibre exposed to hydrogen at 100 bar and 150°C for times up to 120 h are studied by Raman spectroscopy. Hydride and hydroxyl groups are formed, as Si-H and P-OH. The reaction kinetics are consistent with a defect-related mechanism. The saturation concentration of hydroxyl is about 103 ppm. |
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