一种用于电磁脉冲场的高灵敏度微型光纤传感器。

A Highly Sensitive and Miniature Optical Fiber Sensor for Electromagnetic Pulse Fields.

作者信息

Zhao Min, Zhou Xing, Chen Yazhou

机构信息

National Key Laboratory on Electromagnetic Environment Effects, Army Engineering University, No. 97 Heping West Road, Shijiazhuang 050003, China.

出版信息

Sensors (Basel). 2021 Dec 6;21(23):8137. doi: 10.3390/s21238137.

DOI:10.3390/s21238137

PMID:34884141

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8662446/

Abstract

The detection of an electromagnetic pulse (EMP) field is of great significance in determining the field environment of tested equipment in small spaces. Finger-shaped miniature optical fiber sensors for electromagnetic pulse field measurement were designed. The antenna of a weak field sensor was integrated with a shielding shell, and the wire welded at the direct electro-optic converting circuit connected to an optical fiber through special structure and circuit design was taken as the antenna of a strong field sensor. Measurements in the time domain and frequency domain had been carried out for the two sensors. Experiment results demonstrate that the weak field sensor and the strong field sensor have flat responses from 100 kHz to 1 GHz with a variation of 2.3 dB and 2.9 dB, respectively, and the EMP waveform detected by the sensors agrees well with the applied standard square wave. Moreover, the strong field sensor exhibits linear responses from 645 V/m to 83 kV/m. The resolution of the weak field sensor is as low as 13 V/m. The result indicated that the designed sensors had good performance.

摘要

检测电磁脉冲（EMP）场对于确定小空间内被测设备的场环境具有重要意义。设计了用于电磁脉冲场测量的指状微型光纤传感器。弱场传感器的天线与屏蔽壳集成在一起，通过特殊的结构和电路设计，将连接到光纤的直接电光转换电路上焊接的导线作为强场传感器的天线。对这两种传感器进行了时域和频域测量。实验结果表明，弱场传感器和强场传感器在100 kHz至1 GHz范围内具有平坦的响应，变化分别为2.3 dB和2.9 dB，并且传感器检测到的EMP波形与施加的标准方波吻合良好。此外，强场传感器在645 V/m至83 kV/m范围内呈现线性响应。弱场传感器的分辨率低至13 V/m。结果表明所设计的传感器具有良好的性能。