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Er- and Sm-doped sodium-niobium phosphate glasses have been produced by melting technique. Their optical and spectroscopic properties have been fully characterized. Fluorescence lifetimes of the metastable states of Er3+ and Sm3+ ions are long enough to make these glasses suitable to be used in optical amplification devices. Waveguides have been produced by diluted Ag+/Na+ ion exchange and their properties are also described.
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B. J. Chen, Massimo Brenci, Stefano Pelli, Giancarlo C. Righini, Andrey A. Lipovskii, Dmitrii K. Tagantsev, "Niobium phosphate glasses doped with rare earths," Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.525877