Highly Sensitive Optical Fiber Humidity Sensor Employing SiO2 Coated ZnO Nanoparticle Doped PVA

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-10-14 DOI:10.1109/LPT.2024.3480313

Manish Singh Negi;Sunil Mohan

引用次数: 0

Abstract

This letter describes the development and characterization of an optical fiber humidity sensor employing intensity modulation via evanescent wave (EW) absorption technique. For the development of the sensor, humidity-sensitive SiO2-coated ZnO nanoparticle doped PVA film was synthesized over the centrally decladded plastic cladding silica (PCS) fiber. In order to achieve optimal response, rigorous experimental investigations were conducted by varying the film thickness and composition. The optimized sensing probe demonstrated a linear response over 45.5-94.4% RH, with a linear sensitivity of 0.0137RH−1 (47.6mV/%RH). The response and recovery times were observed to be 1s and 1.25s during humidification and dehumidification, respectively. Additionally, the proposed sensor demonstrates a very high degree of repeatability, reversibility, and stability.

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采用二氧化硅涂层氧化锌纳米粒子掺杂 PVA 的高灵敏度光纤湿度传感器

这封信介绍了一种光纤湿度传感器的开发和特性分析，该传感器采用了通过蒸发波（EW）吸收技术进行强度调制的方法。为开发该传感器，在中心包层的塑料包层二氧化硅（PCS）光纤上合成了湿度敏感的二氧化硅涂层 ZnO 纳米粒子掺杂 PVA 薄膜。为了获得最佳响应，通过改变薄膜厚度和成分进行了严格的实验研究。优化后的传感探头在 45.5-94.4%RH 范围内呈线性响应，线性灵敏度为 0.0137RH-1（47.6mV/%RH）。据观察，在加湿和除湿过程中，响应时间和恢复时间分别为 1 秒和 1.25 秒。此外，该传感器还具有极高的可重复性、可逆性和稳定性。

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 Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.