Abstract
The principle andstructure of a novel fiber optic nuclear radiation sensor (mainly measuthig gamma ray) based on the principle of radiation-induced loss are presented in this paper. Its great advantages over conventional nuclear radiation sensors are discussed as well. Experiment results about radiation-induced losses of different doped elements and different doped concentration of the same element in sensitive fibers as well as iniluences of different read-out wavelengths on experiment results are presented and analyzed. Experiment results and analyses show that this kind of fiber optic nuclear radiation sensor has a vast range ofprospects in many application fields ofnuclear radiation detection.
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