Fiber Taper-Based Mach-Zehnder Interferometer for Ethanol Concentration Measurement

被引:16
作者
Liao, Changrui [1 ,2 ]
Zhu, Feng [1 ,2 ]
Zhou, Peng [1 ,2 ]
Wang, Ying [1 ,2 ]
机构
[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Guangdong & Hong Kong Joint Res Ctr Opt Fibre Sen, Shenzhen 518060, Guangdong, Peoples R China
[2] Shenzhen Univ, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
optical fiber sensor; Mach-Zehnder interferometer; ethanol concentration measurement; femtosecond laser micromachining; FABRY-PEROT-INTERFEROMETER; INNER AIR-CAVITY; OPTICAL-FIBER; CURVATURE; STRAIN;
D O I
10.3390/mi10110741
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
We present a new type of fiber Mach-Zehnder interferometer based on a fiber taper and a pair of inner air bubbles for highly sensitive ethanol concentration measurement. The experimental results show there is a nonlinear relationship between the wavelength shift of the dip located near 1485 nm and the ethanol concentration but in the concentration range from 0.3 to 0.7 it can be seen as a linear response with a sensitivity of 28 nm/vol.
引用
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页数:7
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