Temperature-compensated optical fiber sensor for volatile organic compound gas detection based on cholesteric liquid crystal

doi:10.1364/OL.427606

CIOMP OpenIR

	Temperature-compensated optical fiber sensor for volatile organic compound gas detection based on cholesteric liquid crystal
	J. Hu; Y. Chen; Z. Ma; L. Zeng; D. Zhou; Z. Peng; W. Sun and Y. Liu
	2021
发表期刊	Optics Letters
ISSN	1469592
卷号	46 期号:14 页码:3324-3327
摘要	External temperature variations inevitably affect the accuracy of a liquid crystal sensor. Therefore, we propose a novel temperature-compensated fiber volatile organic compound (VOC, using acetone as a model compound) gas sensor. The proposed sensor consists of a short segment of hollow-core fiber (HCF), which is spliced on a multimode fiber. Cholesteric liquid crystal (CLC) is sealed into HCF to sense the temperature, and another type of CLC is coated on the end face of HCF for VOC gas detection. The VOC gas concentration and ambient temperature can be simultaneously measured by monitoring the wavelength shifts of two Bragg reflection peaks caused by two types of CLCs. The effects of the CLC thickness on the sensitivities of temperature and acetone concentration are investigated, and optimal parameters are chosen. An optimal sensor can reach a temperature sensitivity of 2.53 nm/C and acetone concentration sensitivity of 48.46 nm L/mmol at 8-44C. In addition, temperature compensation capability, repeatability, response time, and stability are also researched. The experimental results prove this sensor has great application potential in high-precision real-time VOC gas monitoring and detection. 2021 Optical Society of America.
DOI	10.1364/OL.427606
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65683
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J. Hu,Y. Chen,Z. Ma,et al. Temperature-compensated optical fiber sensor for volatile organic compound gas detection based on cholesteric liquid crystal[J]. Optics Letters,2021,46(14):3324-3327.
APA	J. Hu.,Y. Chen.,Z. Ma.,L. Zeng.,D. Zhou.,...&W. Sun and Y. Liu.(2021).Temperature-compensated optical fiber sensor for volatile organic compound gas detection based on cholesteric liquid crystal.Optics Letters,46(14),3324-3327.
MLA	J. Hu,et al."Temperature-compensated optical fiber sensor for volatile organic compound gas detection based on cholesteric liquid crystal".Optics Letters 46.14(2021):3324-3327.

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