Title :
Changes in spatial distribution of UV-excited luminescence in Ge-doped fibre preforms during UV exposure
Author :
Stepanov, D.Yu. ; Ouellette, F. ; Atkins, G.R.
Author_Institution :
Dept. de Genie Electr., Laval Univ., Que., Canada
Abstract :
The spatial distribution of the blue luminescence associated with the 240 nm absorption band, measured in Ge-doped optical fibre preforms using a wide range of 266 nm excitation power, is presented. The distribution was found to change during the UV exposure, implying a dependence of the absorption band bleaching on the Ge concentration.
Keywords :
luminescence of inorganic solids; optical fibre fabrication; photoluminescence; radiation effects; ultraviolet spectra of inorganic solids; 240 nm; 266 nm; Ge concentration; Ge-doped fibre preforms; GeO 2-SiO 2; UV exposure; UV spectra; UV-excited luminescence; absorption band; absorption band bleaching; blue luminescence; excitation power; optical fibre fabrication; spatial distribution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19931315
