基于迈克尔逊干涉仪涂覆复合膜的光纤湿度传感器

2022 20th International Conference on Optical Communications and Networks (ICOCN) Pub Date : 2022-08-12 DOI:10.1109/ICOCN55511.2022.9900931

Chenglong Wu, Minya Xu, Ye Lu, H. Gong

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引用次数: 0

摘要

提出了一种基于湿敏复合材料包覆薄芯光纤迈克尔逊干涉仪的湿度传感器。研究了涂覆不同比例HA/PVA薄膜的光纤迈克尔逊干涉仪的湿度传感特性。实验结果表明，采用1:2 HA/PVA涂层的干涉仪具有最佳的综合性能，在50%RH—80%RH范围内波长灵敏度为0.1679nm/%RH，温度交叉灵敏度为0.07% RH/°C。所提出的光纤湿度传感器具有灵敏度高、线性度好、迟滞低等优点。

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Fiber Optic Humidity Sensor Based on Michelson Interferometer Coated with Composite Film

A humidity sensor based on a thin-core fiber Michelson interferometer coated with humidity-sensitive composite material is proposed. The humidity sensing characteristics of fiber Michelson interferometer coated with different proportions of HA/PVA films are investigated. The experimental results show that the interferometer coated with 1:2 $HA/PVA$ has the best overall performance, and the wavelength sensitivity is 0.1679nm/%RH in the range of 50%RH--80%RH and the temperature cross sensitivity is O.07%RH/°C. The proposed optical fiber humidity sensor has the merits of high sensitivity, good linearity and low hysteresis.

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2022 20th International Conference on Optical Communications and Networks (ICOCN)

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