Fiber micro-tip temperature sensor based on cholesteric liquid crystal

doi:10.1364/ol.402473

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	Fiber micro-tip temperature sensor based on cholesteric liquid crystal
	J. Y. Hu,D. Zhou,Y. M. Su,S. Q. Liu,P. X. Miao,Y. C. Shi,W. M. Sun and Y. J. Liu
刊名	Optics Letters
	2020
卷号	45 期号:18 页码:5209-5212
ISSN号	0146-9592
DOI	10.1364/ol.402473
英文摘要	This Letter proposes and demonstrates a novel, miniature fiber-tip temperature sensor with a tapered hollow capillary tube (HCT) filled with glycerin and dye-doped cholesteric liquid crystal (CLC). The function of glycerin is to provide a surface anchoring force to control the uniform orientation of CLC molecules, so that the CLC in the tapered HCT can be considered as a mirrorless photonic bandgap (PBG) microcavity. An unambiguously identifiable PBG mode single peak appears in the emission spectra of the sensor. The CLC-based fiber-tip temperature sensor has a temperature sensitivity of -9.167 nm/degrees C, and the figure of merit can reach 67.4 degrees C-1. This sensor offers key features and advantages, including compactness, unambiguous identifiability, and biocompatibility, which can satisfy requirements of temperature measurement in various temperature sensing application fields and has great potential for biochemical detection at cell level. In addition, the CLC was integrated into the optical fiber terminal, and the PBC mode is excited, collected and transmitted by the multimode fiber coupler, which is reported for the first time, to the best of our knowledge. (C) 2020 Optical Society of America
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64526]
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. Y. Hu,D. Zhou,Y. M. Su,S. Q. Liu,P. X. Miao,Y. C. Shi,W. M. Sun and Y. J. Liu. Fiber micro-tip temperature sensor based on cholesteric liquid crystal[J]. Optics Letters,2020,45(18):5209-5212.
APA	J. Y. Hu,D. Zhou,Y. M. Su,S. Q. Liu,P. X. Miao,Y. C. Shi,W. M. Sun and Y. J. Liu.(2020).Fiber micro-tip temperature sensor based on cholesteric liquid crystal.Optics Letters,45(18),5209-5212.
MLA	J. Y. Hu,D. Zhou,Y. M. Su,S. Q. Liu,P. X. Miao,Y. C. Shi,W. M. Sun and Y. J. Liu."Fiber micro-tip temperature sensor based on cholesteric liquid crystal".Optics Letters 45.18(2020):5209-5212.