Simple and stable gas-liquid two-phase optical fiber sensor for acetone based on cholesteric liquid crystal

被引：11

作者：

Liu, Xiujuan ^{[1
]}

Qu, Chaofeng ^{[1
]}

Zhou, Sijie ^{[1
]}

Cao, Wenzhu ^{[1
]}

Xu, Minxing ^{[1
]}

Liu, Yongjun ^{[1
,2
]}

机构：

[1] Harbin Engn Univ, Key Lab Infiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2023年 / 526卷

基金：

美国国家科学基金会;

关键词：

Optical fiber sensing; Liquid crystal; Temperature compensation; SENSING PROPERTIES; INCREASE; BREATH; URINE;

D O I：

10.1016/j.optcom.2022.128890

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose an optical fiber sensor based on cholesteric liquid crystals (CLCs) for monitoring the concentration of acetone in a gas-liquid two-phase environment. The sensor consists of two optical fiber probes, which can compensate the temperature when detecting the acetone concentration. The results showed that the temperature sensitivity of the two cholesteric liquid crystals are 2.44 nm/? and 5.08 nm/?, respectively. In gas-phase and liquid-phase environments, the sensitivities of cholesteric liquid crystals to acetone are 46.95 nm/mmol L-1 and 8.43 nm/%, respectively. In addition, when the temperature fluctuates greatly, the sensor can perform temperature compensation. The proposed sensor has the advantages of small size, simple manufacture and convenient measurement method, providing convenience for the monitoring of acetone leakage in industrial production.

引用

页数：7

共 28 条

[1] Nano particulate SnO2 based resistive films as a hydrogen and acetone vapour sensor [J].