Abstract Er3+/Yb3+ co-doped TeO2–ZnO–ZnF2–La2O3 (TZZL) glasses with different concentrations of Er3+ ions were fabricated. Strong green upconversion emission bands centered at 523 and 545 nm induced by 980 nm excitation were observed. The maximum emission intensity of the TZZL glasses was obtained at the Er3+ ion concentration of 0.2 mol%. High-temperature difference (ΔT = 131.8 °C) between the transition and onset crystallization temperatures was confirmed by differential thermal analysis curve. The relationship between fluorescence intensity ratio value and temperature was examined within 303–560 K. The maximum absolute sensitivity (Sa) and the maximum relative sensitivity (Sr) was 0.006 K−1 at 560 K and 0.012 K−1 at 303 K, respectively. A prototype of an all-fiber temperature sensor was designed, and its temperature-sensing performance within 293–383 K was evaluated. Results showed that the absolute errors were within ±1 K, and the largest value of relative standard deviation was approximately 0.2%, suggesting that Er3+/Yb3+ co-doped TZZL glasses have potential applications in optical-fiber temperature sensors.

中文翻译：

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用于全光纤温度传感器的具有高荧光强度比的 Er3+/Yb3+ 共掺杂 TeO2–ZnO–ZnF2–La2O3 玻璃

摘要 制备了具有不同浓度 Er3+ 离子的 Er3+/Yb3+ 共掺杂 TeO2-ZnO-ZnF2-La2O3 (TZZL) 玻璃。观察到由 980 nm 激发诱导的以 523 和 545 nm 为中心的强绿色上转换发射带。在 Er3+ 离子浓度为 0.2 mol% 时获得 TZZL 玻璃的最大发射强度。通过差热分析曲线证实了转变温度和开始结晶温度之间的高温差 (ΔT = 131.8 °C)。在 303-560 K 范围内检查荧光强度比值与温度之间的关系。最大绝对灵敏度 (Sa) 和最大相对灵敏度 (Sr) 在 560 K 和 303 K 时分别为 0.006 K-1 和 0.012 K-1 . 设计了全光纤温度传感器的原型，并对其在 293-383 K 范围内的温度传感性能进行了评估。结果表明，绝对误差在±1 K以内，相对标准偏差的最大值约为0.2%，表明Er3+/Yb3+共掺杂TZZL玻璃在光纤温度传感器中具有潜在应用。