An extrinsic Fabry–Pérot interference fiber sensorfor ultrasonic detection of partial discharge

IF 0.7 4区物理与天体物理 Q4 OPTICS

Optica Applicata Pub Date : 2023-01-01 DOI:10.37190/oa230203

Ximin Zhang, Sen Qian, Huixin Liu, Chuan Chen, Chuanlu Deng, Chengyong Hu, Yi Huang

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引用次数: 0

Abstract

An ultrasonic sensor based on extrinsic Fabry–Pérot interference (EFPI) has been designed and demonstrated to detect the ultrasonic wave signal. The sensitivity and natural frequency of fiber Fabry–Pérot (F-P) sensor with different structure parameter have been simulated by COMSOL. The simulation results illustrate that the sensitivity is up to 1.737 nm/kPa and the natural frequency is 2.1 MHz, when the silica diaphragm thickness is 2 μm, the radius is 90 μm, and the cavity length is 18 μm. The most suitable parameters have been selected and the F-P sensor has been fabricated. When the ultrasonic signals with the frequencies of 40 kHz and 1.2 MHz are respectively applied to the sensor, the frequencies detected by the EFPI ultrasonic sensor are 39 kHz and 1.21 MHz based on a partial discharge detection experiment for the designed demodulation system. The experimental results show that the sensor can accurately detect ultrasonic signals. As an excellent platform for ultrasonic signal sensing, this EFPI ultrasonic sensing system has great potential applications in partial discharge detection field.

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一种用于局部放电超声检测的外源性法布里-普氏干涉光纤传感器

设计并演示了一种基于外部法布里-帕氏干涉(EFPI)的超声波传感器，用于检测超声波信号。利用COMSOL软件对不同结构参数的F-P光纤传感器的灵敏度和固有频率进行了仿真。仿真结果表明，当硅膜厚度为2 μm，半径为90 μm，腔长为18 μm时，灵敏度可达1.737 nm/kPa，固有频率为2.1 MHz。选择了最合适的参数，制作了F-P传感器。当频率为40 kHz和1.2 MHz的超声波信号分别施加到传感器上时，通过对所设计的解调系统进行局部放电检测实验，EFPI超声波传感器检测到的频率分别为39 kHz和1.21 MHz。实验结果表明，该传感器能够准确地检测出超声波信号。该EFPI超声传感系统作为一种优秀的超声信号传感平台，在局部放电检测领域具有很大的应用潜力。

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

Optica Applicata 物理-光学

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

4 months

期刊介绍： Acoustooptics, atmospheric and ocean optics, atomic and molecular optics, coherence and statistical optics, biooptics, colorimetry, diffraction and gratings, ellipsometry and polarimetry, fiber optics and optical communication, Fourier optics, holography, integrated optics, lasers and their applications, light detectors, light and electron beams, light sources, liquid crystals, medical optics, metamaterials, microoptics, nonlinear optics, optical and electron microscopy, optical computing, optical design and fabrication, optical imaging, optical instrumentation, optical materials, optical measurements, optical modulation, optical properties of solids and thin films, optical sensing, optical systems and their elements, optical trapping, optometry, photoelasticity, photonic crystals, photonic crystal fibers, photonic devices, physical optics, quantum optics, slow and fast light, spectroscopy, storage and processing of optical information, ultrafast optics.