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Er3+/Ce3+ co-doped and B2O3 modified tellurite glasses with initial composition of TeO2–GeO2–Li2O–Nb2O5 were prepared using melt-quenching technique for potential applications in Er3+-doped fiber amplifiers (EDFAs) and lasers. The absorption spectra, fluorescence spectra, up-conversion spectra, Raman spectra and differential scanning calorimeter (DSC) curves of glass samples were measured to evaluate...
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