摘要
针对兆伏每米(MV/m)强脉冲电场的测量需求,设计并研制了基于集成光学的共路干涉仪(CPI)小体积宽带脉冲电场传感器。基于电光效应及电光调制原理,建立了传感器的幅度和频率响应传递函数,分析了集成光学探头的接收特性,并推导了探头灵敏度和带宽随波导长度的关系。设计了适用于MV/m量级脉冲电场测量的纯光学非金属CPI传感器,提出了利用晶体宽度对测量灵敏度调控的方法,使得设计的半波电场提高了2倍以上。研制的无源探头体积小于20 mm×10 mm×5 mm、理论带宽大于4 GHz、最大测量幅度大于1.2 MV/m。研制的传感器在高空电磁脉冲(HEMP)、雷电电磁脉冲(LEMP)及脉冲功率等领域具有应用前景。
To meet the requirements of MV/m intensity pulse electric field measurement,a single optical path type small volume broadband pulse electric field measurement system based on integrated optics is designed and developed.Based on electro-optical effect and electro-optic modulation principle,the amplitude and frequency response transfer function of the measuring system is established,the reception characteristics of the integrated optical probe are analyzed,the relationship between its sensitivity and bandwidth with the length of the waveguide is derived.The pure optical non-metallic single-optical waveguide structure is designed,and a method of adjusting the measurement sensitivity using crystal width is proposed,which raised the designed half-wave electric field more than 3 times.The passive probe size is less than 20 mm×10 mm×5 mm,the theoretical bandwidth is more than 4 GHz,and the maximum measurement range is more than 1.2 MV/m.The developed measurement system has applications in the fields of high-altitude electromagnetic pulse(HEMP),lightning(LEMP)and pulsed power technology.
作者
石跃武
陈伟
聂鑫
王伟
苗建国
吴伟
陈志强
谢霖燊
吴刚
贾伟
Shi Yuewu;Chen Wei;Nie Xin;Wang Wei;Miao Jianguo;Wu wei;Chen Zhiqiang;Xie Linshen;Wu Gang;Jia Wei(National Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi’an 710024,China)
出处
《强激光与粒子束》
CAS
CSCD
北大核心
2024年第4期81-88,共8页
High Power Laser and Particle Beams
关键词
共路干涉仪
脉冲电场
集成光学
传感器
电光效应
common path interferometer
pulsed electric field
integrated optics
sensor
electro-optical effect
