The thermal quenching effect has been systematically investigated in bismuth (Bi)-doped phosphogermanosilicate fiber with varying thermal conditions. For the first time, to the best of our knowledge, the activation of phosphor-related Bi active center (BAC-P) is achieved by thermal quenching at 400°C with a heating time of 10 min, evidenced by the enhanced luminescence of BAC-P (${\sim}{1.3}$∼1.3 times) at 1300 nm. The experimental results reveal that a relatively low heating temperature with prolonged heating time stimulates the growth of BAC-P, whereas higher operating temperatures ($ {\ge} 500^\circ $≥500∘C) result in the irreversible destruction of BAC-P. The underlying mechanism for the thermally stimulated BAC-P process is also analyzed and discussed.

中文翻译：

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铋掺杂的磷酸锗锗硅酸盐纤维中BAC-P的热诱导发光增强。

已经在具有变化的热条件的掺铋（Bi）的磷酸锗锗硅酸盐纤维中系统地研究了热猝灭效果。据我们所知，这是第一次通过在400°C加热10分钟的时间进行热淬灭来实现磷光体相关的Bi活性中心（BAC-P）的活化，这证明了BAC的发光增强-P（$ {\ sim} {1.3} $〜1.3倍）在1300 nm。实验结果表明，较低的加热温度和较长的加热时间会刺激BAC-P的生长，而较高的工作温度（$ {ge} 500 ^ \ circ $≥500∘C）会导致BAC-P的不可逆破坏。 P. 还分析和讨论了热刺激BAC-P过程的潜在机理。