@article {oh1999analysis, title = {Analysis of spectroscopic properties of erbium doped Ta 2 O 5{\textendash}Al 2 O 3{\textendash}SiO 2 optical fiber}, journal = {Journal of non-crystalline solids}, volume = {259}, number = {1}, year = {1999}, pages = {10{\textendash}15}, publisher = {North-Holland}, author = {Oh, Kyunghwan and Kilian, A and Morse, TF} }