电子学报 ›› 2021, Vol. 49 ›› Issue (9): 1691-1700.DOI: 10.12263/DZXB.20200501

• 学术论文 • 上一篇    下一篇

基于电光聚合物缺陷光子晶体的脉冲电场测量技术

李仙丽1, 王冬冬2, 李向龙1, 赵校庆1, 张航1, 张崎2, 江云峰2   

  1. 1.西安电子科技大学电子装备结构设计教育部重点实验室,陕西 西安 710071
    2.中国舰船研究设计中心电磁兼容性国防科技重点实验室, 湖北 武汉 430064
  • 收稿日期:2020-05-27 修回日期:2020-12-04 出版日期:2021-10-21
    • 作者简介:
    • 李仙丽 女,1985年5月出生,山西临汾人.讲师、硕士生导师.2008和2015年分别毕业在天津大学和西安交通大学获工学学士和工学博士学位.主要从事光学检测、电磁测量等方面的研究工作.E-mail:lxlli@xidian.edu.cn
      王冬冬 男,1984年3月出生,河南临颍人.2011年毕业于复旦大学获博士学位.现就职于中国舰船研究设计中心工作,从事电磁兼容及防护技术方面的研究工作.
    • 基金资助:
    • 国家自然科学基金 (51607131); 中央高校基本科研业务费 (JB210406); 陕西省自然科学基金 (2021JM-120)

Photonic Crystal with Electro-optic Polymer Defect for a Pulse Electric Field Sensor

LI Xian-li1, WANG Dong-dong2, LI Xiang-long1, ZHAO Xiao-qing1, ZHANG Hang1, ZHANG Qi2, JIANG Yun-feng2   

  1. 1.Key Laboratory of Electronic Equipment Structure Design, Ministry of Education, Xidian University, Xi’an, Shaanxi 710071, China
    2.National Key Laboratory of Science and Technology, China Ship Development and Design Center, Wuhan, Hubei 430064, China
  • Received:2020-05-27 Revised:2020-12-04 Online:2021-10-21 Published:2021-09-25
    • Supported by:
    • National Natural Science Foundation of China (51607131); Fundamental Research Funds for the Central Universities (JB210406); Natural Science Foundation of Shaanxi Province, China (2021JM-120)

摘要:

针对幅值强、频带宽、持续时间短等脉冲电场测量需求,本文提出一种基于电光聚合物缺陷光子晶体的全介质脉冲电场传感器.在周期性分布的光子晶体中引入电光聚合物作为缺陷层,外界电场的作用下,电光聚合物的折射率发生改变,这将会引起光子晶体的谐振频率偏移,监测谐振频率的变化即可实现被测电场测量.本文通过理论分析与数值模拟光入射角度不同且入射波的偏振状态不同时,光子晶体的结构参数对光子晶体传输光谱特征的影响规律,验证了该传感器的电场敏感特性.仿真结果表明,通过合理设计传感器的结构参数,结合波长-光强解调系统,基于电光聚合物缺陷光子晶体的电场传感器的电场分辨力可以达到约30V/m,最高可测量场强则可达到兆V/m量级.

关键词: 电磁脉冲测量, 光子晶体, 光学传感

Abstract:

As for the measurement requirements of the pulse electric field with high intensity, wide frequency band and short duration, an all-dielectric electric field sensor based on photonic crystal with electro-optic polymer defect was proposed in this paper. The electro-optic polymer in the form of a defect layer was inserted in the periodic one-dimensional photonic crystal structure. The variations of refractive index of electro-optic polymer under the externally applied electric fields may induce the changes of the resonance wavelength of the defect mode. Accordingly, the applied electric field may be measured by monitoring the shift of the resonant wavelength. It is theoretically shown that the minimal detectable electric field of 30V/m can be achieved and the maximum detectable field could reach up to the order of MV/m.

Key words: electromagnetic pulse measurement, photonic crystal, optical sensor

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