Optical fiber sensor based on a cholesteric liquid crystal film for mixed VOC sensing

doi:10.1364/oe.405627

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Optical fiber sensor based on a cholesteric liquid crystal film for mixed VOC sensing
	Y. H. Yang,D. Zhou,X. J. Liu,Y. J. Liu,S. Q. Liu,P. X. Miao,Y. C. Shi and W. M. Sun
刊名	Optics Express
	2020
卷号	28 期号:21 页码:31872-31881
ISSN号	1094-4087
DOI	10.1364/oe.405627
英文摘要	This paper proposes a novel cholesteric liquid crystal (CLC) film-based dual-probe fiber sensor to monitor volatile organic compound (VOC) gas. The sensor consists of a 2x2 multimode fiber coupler, in which the two output fiber ends are covered by two types of CLC films (CLCF) with different pitches. It can be observed that the reflection peak wavelengths of CLCs shift to the red side as the VOC gas concentration increases. The sensitivities of the two CLCFs are 8.435 nm.L/mmol and 14.867 nm.L/mmol to acetone, 14.586 nm.L/mmol and 29.303 nm.L/mmol to ethanol, respectively. In addition, the dependence of the peak wavelength shift of CLCF on the total concentration of the acetone and ethanol mixed gas at different mixing ratios is measured. The linear relationships between the peak shift of CLCFs, the total mixed gas concentration and acetone/ethanol ratio are calculated using the least-squares method. Therefore, this proposed dual-probe fiber optic sensor can distinguish the concentrations of acetone and ethanol in a mixed gas of acetone and ethanol. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64749]
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	Y. H. Yang,D. Zhou,X. J. Liu,Y. J. Liu,S. Q. Liu,P. X. Miao,Y. C. Shi and W. M. Sun. Optical fiber sensor based on a cholesteric liquid crystal film for mixed VOC sensing[J]. Optics Express,2020,28(21):31872-31881.
APA	Y. H. Yang,D. Zhou,X. J. Liu,Y. J. Liu,S. Q. Liu,P. X. Miao,Y. C. Shi and W. M. Sun.(2020).Optical fiber sensor based on a cholesteric liquid crystal film for mixed VOC sensing.Optics Express,28(21),31872-31881.
MLA	Y. H. Yang,D. Zhou,X. J. Liu,Y. J. Liu,S. Q. Liu,P. X. Miao,Y. C. Shi and W. M. Sun."Optical fiber sensor based on a cholesteric liquid crystal film for mixed VOC sensing".Optics Express 28.21(2020):31872-31881.