Title :
All-fibre narrowband reflection gratings at 1500 nm
Author :
Kashyap, Rekha ; Armitage, J.R. ; Wyatt, R. ; Davey, S.T. ; Williams, D.L.
Author_Institution :
British Telecom Res. Labs., Ipswich, UK
fDate :
5/24/1990 12:00:00 AM
Abstract :
The first demonstration of reflection gratings at around 1500 nm written into germanosilicate fibres using an ultraviolet laser is reported. Grating reflection coefficients up to 10% with linewidths around 1 nm have been observed. By using one of these gratings, narrow linewidth operation of a 1500 nm Er3+ doped fibre laser has been achieved.
Keywords :
diffraction gratings; erbium; fibre optics; germanate glasses; solid lasers; 1500 nm; GeO 2-SiO 2 fibre; all-fibre narrowband reflection gratings; doped fibre laser; grating reflection coefficients; linewidths; narrow linewidth operation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900476
