Highly sensitive fiber-optic direct current electric field sensor using Michelson interferometry and constant strain cantilever beam

IF 2.7 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-07-09 DOI:10.1016/j.yofte.2025.104339

Houren Pan , Wenlin Feng , Xiaozhan Yang , Xiangzhi Liu , Zhixian Zhang , Xiaopan Mu , Hongchao Lan , Taiming Luo

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Abstract

A fiber-optic direct current (DC) electric field sensor based on a Michelson interferometer and a constant-strain cantilever beam is proposed and fabricated. It addresses the limitations of DC electric field sensor, including low sensitivity, slow response, electromagnetic interference, and temperature sensitivity. The sensor’s structural design is optimized through both theoretical simulations and experimental analysis. Under the DC electric field, the metal hemispheres within the sensor experience electrostatic forces, resulting in bending and deformation of the cantilever beam and optical fiber. This deformation leads to fluctuations in light intensity loss. By analyzing the intensity variations in the interferometric spectrum, the DC electric field strength is determined. Experimental results demonstrate that the proposed sensor accurately measures DC electric field strengths ranging from 0.4 to 1 kV/mm. The output optical intensity exhibits a linear dependence on the DC electric field intensity, with a high fitting degree of 0.99501 and a sensitivity of 18.41365 dBm/(kV/mm). The sensor exhibits excellent stability and repeatability, addressing the challenges associated with signal demodulation. Moreover, this work provides a robust solution for DC electric field monitoring in high-voltage infrastructure and electrostatic-sensitive environments.

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采用迈克尔逊干涉法和恒应变悬臂梁的高灵敏度光纤直流电场传感器

提出并制作了一种基于迈克尔逊干涉仪和恒应变悬臂梁的光纤直流电场传感器。它解决了直流电场传感器灵敏度低、响应慢、电磁干扰和温度敏感等缺点。通过理论模拟和实验分析，优化了传感器的结构设计。在直流电场作用下，传感器内部的金属半球受到静电力，导致悬臂梁和光纤弯曲变形。这种变形导致光强损失的波动。通过分析干涉光谱的强度变化，确定了直流电场强度。实验结果表明，该传感器能准确测量0.4 ~ 1 kV/mm范围内的直流电场强度。输出光强与直流电场强度呈线性关系，拟合度为0.99501，灵敏度为18.41365 dBm/(kV/mm)。该传感器具有出色的稳定性和可重复性，解决了与信号解调相关的挑战。此外，该工作为高压基础设施和静电敏感环境中的直流电场监测提供了可靠的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.