Title :
Hydroxyl group formation caused by hydrogen diffusion into optical glass fibre
Author :
Tanaka, Shoji ; Kyoto, M. ; Watanabe, Manabu ; Yokota, Hideo
Author_Institution :
Sumitomo Electric Industries Ltd., Yokohama, Japan
Abstract :
Transmission loss increase of optical glass fibre caused by hydrogen diffusion is measured as a function of temperature and partial pressure of hydrogen gas. The activation energy of hydroxyl group formation from the diffused molecular hydrogen was found to be 15.9 kcal/mole. Also the hydroxyl absorption loss increase at 200°C was found to be proportional to the square root of the partial pressure of hydrogen gas.
Keywords :
losses; optical fibres; H2 diffusion; activation energy; hydroxyl absorption loss; hydroxyl group formation; multimode graded index fibre; optical glass fibre; partial pressure; transmission loss;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840193
