High-sensitivity strain sensor based on in-fiber rectangular air bubble

被引：125

作者：

Liu, Shen ^{[1
]}

Yang, Kaiming ^{[1
]}

Wang, Yiping ^{[1
]}

Qu, Junle ^{[1
]}

Liao, Changrui ^{[1
]}

He, Jun ^{[1
]}

Li, Zhengyong ^{[1
]}

Yin, Guolu ^{[1
]}

Sun, Bing ^{[1
]}

Zhou, Jiangtao ^{[1
]}

Wang, Guanjun ^{[1
]}

Tang, Jian ^{[1
]}

Zhao, Jing ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

中国国家自然科学基金;

关键词：

FABRY-PEROT-INTERFEROMETER; TEMPERATURE; GRATINGS;

D O I：

10.1038/srep07624

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We demonstrated a unique rectangular air bubble by means of splicing two sections of standard single mode fibers together and tapering the splicing joint. Such an air bubble can be used to develop a promising high-sensitivity strain sensor based on Fabry-Perot interference. The sensitivity of the strain sensor with a cavity length of about 61 mm and a wall thickness of about 1 mu m was measured to be up to 43.0 pm/mu epsilon and is the highest strain sensitivity among the in-fiber FPI-based strain sensors with air cavities reported so far. Moreover, our strain sensor has a very low temperature sensitivity of about 2.0 pm/degrees C. Thus, the temperature-induced strain measurement error is less than 0.046 mu epsilon/degrees C.

引用

页数：7

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