Stability of fiber Bragg gratings fabricated using UV Ar + and ArF excimer in Bismuth-Aluminum-co-doped silica fibers

Continuous annealing of fiber Bragg gratings fabricated using cw and pulsed laser irradiation in Bi-Al-co-doped fibers of different concentrations show activation energy spectra linked to Bi-Al. Thermal stability maps were obtained by their analytical representation.