Transparent Ni2+-doped MgOAl2O3TiO2SiO2 glass ceramics were prepared, and the optical properties of Ni2+-doped glass ceramics were investigated. Broadband emission centered at 1320nm was observed by 980nm excitation. The longer wavelength luminescence compared with Ni2+-doped Li2OGa2O3SiO2 glass ceramics is ascribed to the low crystal field hold by Ni2+ in MgOAl2O3TiO2SiO2 glass ceramics. The change in optical signals at the telecommunication bands with or without 980nm excitation was also measured when the seed beam passes through the bulk gain host.
