利用动态化学腐蚀法制备锥尖型光纤端面，以提拉法镀溶胶凝胶敏感膜，组装了基于荧光猝灭的直径仅1.5 mm的光纤氧传感探头。探头锥面的长径比可通过调控腐蚀参数(温度、腐蚀液面下降速度)调控。构建相移测量系统，优化参数后进行0~21%范围内的氧含量测定，工作曲线呈现良好的线性特征(R2=0.9996)，偏差小于测量值的5%。%Conical tapered tip was prepared by dynamic chemical etching method,on which sensitive membrane was plated through sol-dipping coating.Then,fiber optical oxygen sensor probe of 1.5 millimeters based on fluorescence quenching was fabrica-ted.The geometrical parameters could be regulated etch parameters,such as temperature and descent velocity.Phase shift measuring system was set to evaluate the performance of the probe.After parameters optimized,the oxygen content was tested within the scope of 0% ~21%.The working curve shows favorable linearity (R2 = 0.999 6),and the deviation is less than 5% of measured value.
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