Title :
Photoluminescence of Bragg germanosilicate fibres excited at 488 nm
Author :
Bucholtz, F. ; Ewing, K.J. ; Putnam, M. ; Askins, C.G.
Author_Institution :
Div. of Opt. Sci., Naval Res. Lab., Washington, DC, USA
fDate :
6/6/1996 12:00:00 AM
Abstract :
The authors have observed photoluminescence peaked near 667 nm from Bragg gratings written in germanosilicate fibres upon excitation by 488 nm radiation. The observed luminescence spectrum Is consistent with the 1.9 eV spectrum owing to nonbridging oxygen hole centres in silica and germanium doped silica glasses. The strength of the luminescence appears to vary significantly depending on the fibre composition, but did not depend strongly on hydrogen content in one type of fibre studied
Keywords :
diffraction gratings; germanate glasses; optical fibres; photoluminescence; silicon compounds; 1.9 eV; 488 nm; 667 nm; Bragg germanosilicate fibres; Bragg gratings; GeO2-SiO2; fibre composition; grating writing process; nonbridging hole centres; photoluminescence;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960737
