具有锥形天线的宽带铌酸锂光波导电场传感器的设计与分析

Design and Analysis of Broadband LiNbO Optical Waveguide Electric Field Sensor with Tapered Antenna.

作者信息

Lu Haiying, Li Yingna, Zhang Jiahong

机构信息

Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Jingming South Road No.727, Chenggong District, Kunming 650500, China.

Yunnan Key Laboratory of Computer Technology Applications, Kunming 650500, China.

出版信息

Sensors (Basel). 2021 May 25;21(11):3672. doi: 10.3390/s21113672.

DOI:10.3390/s21113672

PMID:34070507

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8198437/

Abstract

The three-dimensional (3D) simulation model of a lithium niobate (LiNbO, LN) optical waveguide (OWG) electric field sensor has been established by using the full-wave electromagnetic simulation software. The influences of the LN substrate and the packaging material on the resonance frequency of the integrated OWG electric field sensor have been simulated and analyzed. The simulation results show that the thickness of the LN substrate has a great influence on the resonant frequency of the sensor (≈33.4%). A sensor with a substrate thickness of 1 mm has been designed, fabricated, and experimentally investigated. Experimental results indicate that the measured resonance frequency is 7.5 GHz, which nearly coincides with the simulation results. Moreover, the sensor can be used for the measurement of the nanosecond electromagnetic impulse (NEMP) in the time domain from 1.29 kV/m to 100.97 kV/m.

摘要

利用全波电磁仿真软件建立了铌酸锂（LiNbO₃，LN）光波导（OWG）电场传感器的三维（3D）仿真模型。对LN衬底和封装材料对集成OWG电场传感器谐振频率的影响进行了仿真和分析。仿真结果表明，LN衬底的厚度对传感器的谐振频率有很大影响（约33.4%）。设计、制作并实验研究了一种衬底厚度为1mm的传感器。实验结果表明，测得的谐振频率为7.5GHz，与仿真结果基本吻合。此外，该传感器可用于测量1.29 kV/m至100.97 kV/m时域内的纳秒电磁脉冲（NEMP）。