Title :
Raman spectra of hydrogen-treated optical fibres
Author :
Bibby, G.W. ; Ross, J.N.
Author_Institution :
Central Electricity Generating Board, Central Electricity Research Laboratories, Leatherhead, UK
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.
Keywords :
Raman spectra of inorganic solids; germanate glasses; optical fibres; optical glass; phosphosilicate glasses; spectrochemical analysis; Ge-P-silicate core; P-OH; Raman spectroscopy; Si-H; defect-related mechanism; hydride groups; hydrogen treatment; hydroxyl groups; optical fibre; reaction kinetics; saturation concentration;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840122
