Simple capillary-based extrinsic Fabry-Perot interferometer for strain sensing

被引：7

作者：

Zhang, Xiaobei ^{[1
]}

Shao, Haiyang ^{[1
]}

Pan, Haiyang ^{[1
]}

Yang, Yong ^{[1
]}

Bai, Huawen ^{[1
]}

Pang, Fufei ^{[1
]}

Wang, Tingyun ^{[1
]}

机构：

[1] Shanghai Univ, Sch Commun & Informat Engn, Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2017年 / 15卷 / 07期

基金：

中国国家自然科学基金;

关键词：

PHOTONIC CRYSTAL FIBER; REFRACTIVE-INDEX; TEMPERATURE; SENSITIVITY; PRESSURE;

D O I：

10.3788/COL201715.070601

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple capillary-based extrinsic Fabry-Perot structure is presented and fabricated, using the manual welding method with the strain sensing characteristics investigated in detail. Strain sensitivities of 4.2, 2.8, and 2.4 pm/mu epsilon are obtained experimentally with the interferometer length around 50 mu m and the inner diameter of 75, 50, and 25 mu m, respectively. The underlying physics of the strain sensitivity of this device is negatively correlated with the interferometer length and positively correlated with the capillary inner diameter, which provides two simple parameters to tailor the strain sensitivity.

引用

页数：4

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