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논문 기본 정보

자료유형
학술저널
저자정보
Ning Wang (China University of Petroleum (East China)) Yuhao Li (China University of Petroleum (East China)) Xiaolei Yin (China University of Petroleum (East China)) Wenting Liu (China University of Petroleum (East China)) Shiqi Liu (China University of Petroleum (East China)) Liang Xu (China University of Petroleum (East China)) Xuwei Zhao (China University of Petroleum (East China)) Yanxi Zhong (China University of Petroleum (East China))
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.7 No.1
발행연도
2023.2
수록면
21 - 27 (7page)

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초록· 키워드

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A highly sensitive optical-fiber humidity sensor is demonstrated in this paper. By using Nafion-PVA sol-gel and single-mode optical fibers, the Fabry-Perot humidity sensor is easily fabricated. In the humidity range of 29%–72%, humidity-response experiments are carried out with a cycle of rising and falling humidity to investigate humidity-response characteristics. The experimental results show 2.25 nm/%RH sensitivity and a 0.9997 linear correlation coefficient, with good consistency. The changes in optical-path difference (OPD) and free spectral range (FSR) with humidity are also discussed. The humidity sensitivities of a typical sensor are 80.3 nm/%RH (OPD) and 0.03 nm/%RH (FSR). Furthermore, many humidity sensors with different Nafion-PVA sol-gel concentration and initial cavity length are experimentally investigated for humidity response. The results show that the sensitivity increases with higher Nafion ratio of the Nafion-PVA sol-gel. The influence of changing cavity length on sensitivity is not obvious. These results are helpful to research on optical-fiber humidity sensors with good performance, easy fabrication, and low cost.

목차

I. INTRODUCTION
II. METHOD
III. RESULTS
IV. CONCLUSION
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