光子探测技术是弱光探测领域的热点，介绍了SPM(硅光电倍增管阵列)探测器件的工作原理、基本结构、性能特点，为了验证SPM探测器的光子探测性能以及光子分辨能力，利用高速跨导放大器设计了SPM光子探测电路，并进行了光子探测实验研究。根据实验结果可以得出结论，SPM探测器具有较好的光子分辨特性。

The photon detection technology is a hot area in the low light detection. The working principle, basic structure and performance characteristics of SPM (silicon photo multipliers) detector are introduced, in order to verify the photon detection performance and photon resolution ability of SPM detector, SPM photon detection circuit using high speed transconducance amplifier is designed, and the photon detection experiment is studied. The experimental results show that SPM detector has a better photon resolution property.