本文旨在研制盖革模式电路并在两种紫外光照射下测试电路性能，为紫外通信提供数据参考。研制了适用于硅雪崩光电二极管（ APD）的主动、被动两种盖革模式电路，设计并实现了输出可调至300.0 V的高稳定直流高压偏置电源，实测纹波电压小于 20.4 mV，纹波系数小于 6.8×10－5。分别在可见盲和日盲两种紫外光照下，测试了被动盖革模式 APD的死时间、暗计数和光子计数，给出了被动盖革模式工作的较佳高压偏置范围；紫外光照下，被动盖革模式 APD的电路输出脉冲的死时间为 1.0 .s。基于被动盖革模式电路测试的参数，研制了主动盖革模式电路，实验结果表明：主动盖革模式电路输出脉冲的死时间为 102.0 ns，光子计数的上限由被动盖革模式的 1.0 MHz提高到主动盖革模式的 9.8 MHz。因此主动盖革模式电路在数据传输时有更高的传输带宽，预计可满足一些图像传输或者视频通信的基本要求。

This paper aims to develop a Geiger mode circuit that is tested under two kinds of ultraviolet light, providing a data reference for ultraviolet communication. Active and passive Geiger mode circuit systems are designed based on silicon APD and given the solution of high-voltage APD bias. High-stability, high-voltage DC bias power was designed that can supply output to 300 V. The measured ripple of the high-voltage DC solution is less than 20.4 mV, and the ripple coefficient is less than 6.8×10－5. The passive Geiger mode circuit system with visible-blind UV and solar-blind UV(two ultraviolet LED light sources) is tested, and the counts and dead time are obtained. The operating range of the optimal bias voltage VG in the passive Geiger mode circuit under two kinds of UV light sources is given. The output pulse dead time of the passive Geiger mode circuit that used a UV light source is 1.s. The output pulse dead time of the active Geiger mode circuit with a solar-blind UV light source is 102 ns. Theoretically, the active Geiger mode circuit has a higher transmission bandwidth with respect to the passive Geiger mode circuit, and the upper limit of the count rate is increased from 1.0 MHz to 9.8 MHz. This meets the requirements for UV image transmission and video communication.