高精度纳秒强电磁脉冲集成光学电场传感器性能分析

Performance Analysis on Integrated Optical Electric Field Sensor for High-Accuracy Nanosecond Intense Electromagnetic Pulse Measurement

摘要:

基于铌酸锂(LiNbO₃)结构研制了一种采用马赫-曾德尔干涉仪与领结天线的、可用于纳秒强电磁脉冲测量的高精度电场传感器。通过实验对传感器性能进行了验证,结果表明:该传感器在对纳秒电磁脉冲上升时间、下降时间与脉冲宽度的测量中,最大误差分别仅为3.9%、4.3%与0.3%,测量数据线性度达到0.9991,最小/最大可测电场强度分别达到3kV/m和50kV/m。

Abstract:

A lithium niobate (LiNbO₃)-based high-accuracy integrated optical sensor with Mach-Zehnder interferometer and bow-tie antenna was designed and fabricated for nanosecond intense electromagnetic pulse detection. Experimental results demonstrate that the maximum relative deviations of raise time, fall time and pulse-width are only 3.9%, 4.3% and 0.3%, respectively. Moreover, the linearity between the measurement and fitting data is 0.9991, and the minimum and maximum detectable electric fields reach 3kV/m and 50kV/m, respectively.