A laser powered EO sensor for measurement of EMP  

作　　者：ZHANG Jiahong MA Chao WANG Zhuo 

机构地区：[1]Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China

出　　处：《Optoelectronics Letters》2024年第12期709-713,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62162034);Yunnan Fundamental Research Projects(No.202201AT070189)。

摘　　要：This article presents an active electro-optic(EO)modulation electromagnetic pulse(EMP)sensor powered by laser.The sensor simulation model is established,and the temporal response characteristics of the sensor are analyzed based on finite element method(FEM).The laser powered supply circuit and receiving modulation circuit are designed and implemented.A monopole antenna is designed and used to revive the EMP.By integrating the supply circuit,the receiving modulation circuit and the antenna together,the sensor is finally fabricated and encapsulated.Experimental results indicate that with the designed laser powered supply circuit,the sensor can operate continuously and stably.The measured standard 1.2/50μs lightning electromagnetic pulse(LEMP)in the time domain agrees well with the input LEMP voltage waveform.The linear maximum and minimum measurable electric fields of the sensor are 20.8 kV/m and 221 V/m,respectively.All the results demonstrate that the sensor can provide an effective technical means for the measurement of EMP in the time domain.

关 键 词：EMP SENSOR ANTENNA 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]