Keywords: 
• 碲铋酸盐玻璃Er^3+/Ce^3+共掺 /
• 1．53μm波段荧光 /
• 光谱特性

Abstract: A series of 80TeO2-10Bi2O3-10TiO2-0.5Er2O3-χCe2O3 （χ = 0, 0.25, 0.5, 0.75, 1.0 mol%） and （80-y） TeO2-10Bi2O3-10TiO2- yWO3-0.5Er2O3-0.75Ce2O3 （y = 3, 6, 9, 12 mol%） tellurite-bismuth glasses are prepared by the conventional high-temperature melt- ing and annealing method. The absorption spectra of 400----1700 nm, upconversion spectra and 1.53μm band fluorescence spectra under the excitation of 975 nm, the 4Ⅰll/2 and 4Ⅰ13/2 level fluorescence lifetimes of Era＋ under the excitation of 808 nm, and the Ra- man spectra of doping-free glass samples are measured. Meanwhile, the spectroscopic parameters of Er^3＋ are calculated and analyzed with the help of Judd-Ofelt theory and McCumber theory. The results indicate that the upconversion fluorescence can be suppressed efficiently and the 1.53 μm band fluorescence can be enhanced evidently, owing to the energy transfer from Er^3＋： 4Ⅰ11/2→Ce^3＋： 2^F5/2 levels when the Cea＋ ions are introduced into the Er^3＋-doped tellurite-bismuth glasses. Moreover, the 1.53 μm band fluores- cence intensity can be improved and the fluorescence spectral width can be broadened further when an appropriate amount of WO3 component is introduced. The above research results are of theoretical significance for obtaining the tellurite-bismuth glasses with excellent spectroscopic properties, which are used for the 1.53 μm broadband Erbium-doped optical fiber amplifier.