Study of Ge-doped glass films grown by RF-sputtering A.G. Rolo, Ch. Ricolleau, O. Conde, M.I. Vasilevskiy and M.J.M. Gomes “E-MRS Spring Meeting 2002, SYMPOSIUM S, Micro- and Nano- Structured Semiconductors”, 18 – 21 de Junho de 2002, Estrasburgo, França.