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提出一种用于强电场测量的集成光波导电场传感器天线电极设计方案。给出了传感器等效电路,计算分析了天线、电极的各个参数对传感器半波电场的影响。结果表明:当传感器电极长度、天线长度由4mm减少到0.5mm时,传感器半波电场由230kV/m分别增加到2 400kV/m和1 100kV/m,提高了943.5%和378.3%;当电极间距、电极宽度由20μm增加到200μm时,传感器半波电场由400kV/m分别增加为2 300kV/m和730kV/m,提高了475.0%和82.5%;当天线底部宽度由50μm增加到600μm时,传感器半波电场由460kV/m减小到242kV/m,减小了47.4%。因此,合理设计传感器电极、天线尺寸可使其半波电场达到几百kV/m至几千kV/m,使它能够应用于强电场测量领域。
A design scheme of integrated optical waveguide electric field sensor antenna electrode for strong electric field measurement is proposed. The equivalent circuit of the sensor is given. The influence of the parameters of the antenna and the electrode on the half-wave electric field of the sensor is calculated and analyzed. The results show that the half-wave electric field of the sensor increases from 230kV / m to 2 400kV / m and 1 100kV / m respectively, increasing by 943.5% and 378.3% when the length of the sensor electrode and the antenna length decrease from 4mm to 0.5mm. When the width of the antenna increases from 20μm to 200μm, the half-wave electric field increases by 475.0% and 82.5% from 400kV / m to 2 300kV / m and 730kV / m, respectively. When the width of the bottom of the antenna increases from 50μm to 600μm, The half-wave electric field decreases from 460kV / m to 242kV / m, a decrease of 47.4%. Therefore, the reasonable design of the sensor electrode, the antenna size can make its half-wave electric field reach several hundred kV / m to several thousands of kV / m, making it can be applied to the field of strong electric field measurement.