A Study on Evanescent Wave Humidity Sensor Based on PEG-PMMA Microspheres With Enhanced Performance

IF 2.4 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2025-03-19 DOI:10.1109/JPHOT.2025.3571489

Yuxin Chen;Yutong Qi;Bao Zhu;Xingchen Zhou;Xuefei Xiao;Zheyuan Gu;Jun Qian;Chuanyang He;Min Lai;Yan Ma;Bo Liu

引用次数: 0

Abstract

In this study, we demonstrate fabrication of an evanescent wave fiber optic humidity sensor based on PEG-PMMA microsphere film as moisture-sensitive material. A three dimensional stacking structure of PEG-PMMA microspheres is formed by dip coating method on fiber core. A simultaneous fast response and recovery is optimized with equilibrium time of 13 s and 8 s between 30% RH and 80% RH, respectively. The sensor possessed a maximum sensitivity of 157.143 lux/% RH in the range of 70–80% RH and a good linear relationship between the logarithm of output optical intensity and relative humidity with a correlation coefficient of 0.998. Moreover, the sensor exhibits low hysteresis, excellent repeatability, short-term and long-term stability and electromagnetic immunity. Modulation of intensity is primarily attributed to scattering of evanescent wave on polymer microspheres in humidity sensing.

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基于性能增强聚乙二醇- pmma微球的倏逝波湿度传感器研究

在这项研究中，我们展示了一种基于聚乙二醇聚甲基丙烯酸甲酯微球薄膜作为湿敏材料的倏逝波光纤湿度传感器的制造。采用浸涂法在纤维芯上形成聚乙二醇-聚甲基丙烯酸甲酯微球的三维堆积结构。在30% RH和80% RH条件下，平衡时间分别为13 s和8 s，可同时实现快速响应和恢复。该传感器在70 ~ 80% RH范围内的最大灵敏度为157.143 lux/% RH，输出光强的对数与相对湿度呈良好的线性关系，相关系数为0.998。此外，该传感器具有低迟滞、优异的重复性、短期和长期稳定性和电磁抗扰性。在湿度传感中，强度的调制主要是由倏逝波在聚合物微球上的散射引起的。

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

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.