Title :
Efficiency and thermal behaviour of cerium-doped fluorozirconate glass fibre Bragg gratings
Author :
Poignant, Hubert ; Boj, S. ; Delevaque, E. ; Monerie, M. ; Taunay, T. ; Niay, P. ; Bernage, P. ; Xie, W.X.
Author_Institution :
LDMP, Univ. des Sci. et Tech. de Lille Flandres Artois, Villeneuve d´Ascq
fDate :
8/4/1994 12:00:00 AM
Abstract :
1.55 μm Bragg gratings have been written in cerium-doped fluorozirconate glass singlemode fibres through UV illumination at 246 nm. Photoinduced refractive index changes up to 4×10-4 have been achieved, leading to grating efficiencies close to 100%. Preliminary results on the thermal behaviour of the gratings and realisation of a tunable laser including such a grating are also reported. The ZBLALi (ZrF4-BaF2-LaF3-AlF3-LiF:Ce) glass composition was shown to be the most efficient
Keywords :
aluminium compounds; barium compounds; cerium; diffraction gratings; fibre lasers; fluoride glasses; lanthanum compounds; laser tuning; lithium compounds; refractive index; zirconium compounds; 1.55 micron; UV illumination; ZBLALi glass composition; ZrF4-BaF2-LaF3-AlF3 -LiF:Ce; fibre Bragg gratings; grating efficiencies; photoinduced refractive index changes; singlemode fibres; thermal behaviour; tunable laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940886