Wang Shaofeng, Xiang Xiao, Zhou Conghua, Zhai Yiwei, Quan Runai, Wang Mengmeng, Hou Feiyan, Zhang Shougang, Dong Ruifang, Liu Tao
Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Science, Xi'an 710600, China.
Rev Sci Instrum. 2017 Jan;88(1):013107. doi: 10.1063/1.4973853.
In this paper, a model for simulating the optical response and noise performances of photodetectors with L-C coupling and transimpedance amplification circuit is presented. To verify the simulation, two kinds of photodetectors, which are based on the same printed-circuit-board (PCB) designing and PIN photodiode but different operational amplifiers, are developed and experimentally investigated. Through the comparisons between the numerical simulation results and the experimentally obtained data, excellent agreements are achieved, which show that the model provides a highly efficient guide for the development of a high signal to noise ratio photodetector. Furthermore, the parasite capacitances on the developed PCB, which are always hardly measured but play a non-negligible influence on the photodetectors' performances, are estimated.
本文提出了一种用于模拟具有L-C耦合和跨阻放大电路的光电探测器的光学响应和噪声性能的模型。为了验证该模拟，开发并实验研究了两种基于相同印刷电路板（PCB）设计和PIN光电二极管但运算放大器不同的光电探测器。通过数值模拟结果与实验获得的数据之间的比较，取得了良好的一致性，这表明该模型为高信噪比光电探测器的开发提供了高效的指导。此外，还估计了所开发PCB上的寄生电容，这些寄生电容一直难以测量，但对光电探测器的性能有不可忽视的影响。
