%0 Journal Article %J Journal of non-crystalline solids %D 1999 %T Analysis of spectroscopic properties of erbium doped Ta< sub> 2 O< sub> 5–Al< sub> 2 O< sub> 3–SiO< sub> 2 optical fiber %A Oh, Kyunghwan %A Kilian, A %A Morse, TF %B Journal of non-crystalline solids %I Elsevier %V 259 %P 10–15 %G eng