中文摘要：

基于渐逝波光场对微纳粒子具有光吸附力的效应，提出了利用熔融拉锥光纤吸附沉积半导体量子点的实验研究。以波长为980nm的激光作为光源，在熔融拉锥光纤表面成功吸附沉积了高密度硫化铅（Pbs）量子点薄膜。通过光抽运，在吸附沉积PbS量子点的熔锥光纤中观测到PbS量子点光致发光光谱，并实现了在1550nm波段的光放大，增益达6．8dB。

英文摘要：

Based on the optical trapping micro-and nano-particles effect of the evanescent field, we propose to investigate the optical trapping technique for semiconductor quantum dots by using tapered optical fiber. With the laser at 980 nm wavelength as light source, the PbS quantum dots （QDs） are absorbed and deposited on the surface of the tapered fiber successfully. By optical pumping, the photoluminescence from the tapered fiber after trapping PbS QDs is observed, and a gain of 6.8 dB is obtained at 1550 nm wavelength band.