提出了基于溶胶-凝胶(Sol-Gel)法制备掺铈石英闪烁光纤,将其作为辐射传感头,搭建了对伽马辐射敏感的光纤传感系统。通过改变溶胶-凝胶中铈元素掺杂浓度,分别拉制出Ce与Si的摩尔分数分别为0.14%和0.22%的闪烁石英光纤。利用137Cs伽马辐射源,研究了闪烁光纤涂覆层、铈元素掺杂浓度及闪烁光纤长度等参量对辐射传感特性的影响。 The sol-gel-based quartz scintillation fiber is proposed as a radiation sensor, and a fiber sensing system sensitive to gamma radiation is proposed. By changing the doping concentration of cerium in the sol-gel, the scintillation silica fibers with Ce and Si molar fractions of 0.14% and 0.22% were drawn respectively. The effects of parameters such as scintillation fiber coating, doping concentration of cerium and length of scintillation fiber on the radiation sensing characteristics were investigated by using 137Cs gamma radiation source.