强激光与粒子束2016，Vol.28Issue(10)：101004-1-101004-5,5.DOI:10.11884/HPLPB201628.160021
双平衡式探测在激光测速仪中的应用研究
Application of dual-balanced detection in laser velocimeter
摘要
Abstract
To increase the measurement distance and sensitivity of laser Doppler velocimeter,the dual-balanced detection re-ceiving system was designed based on Mach-Zehnder ring structure.The SNR expression of balanced detection system based on the balanced light current is derived and simulated.The simulation shows that the SNR of balanced detection is higher than that of the heterodyne detection when quantum conversion efficiency ratio of two detectors ranges from 0.236 to 1,and the signal-to-noise ratio is the highest when the ratio is 1.The simulation results were demonstrated by experiments.关键词
平衡探测/数值仿真/探测器/信噪比Key words
dual-balanced detection/numerical simulation/detector/signal-to-noise ratio分类
信息技术与安全科学引用本文复制引用
李玉,张澍,周健,金世龙..双平衡式探测在激光测速仪中的应用研究[J].强激光与粒子束,2016,28(10):101004-1-101004-5,5.基金项目
国家自然科学基金项目(61308060) （61308060）
