High-sensitivity microfiber strain and force sensors

被引：36

作者：

Li, Wei ^{[1
]}

Hu, Zhifang ^{[1
]}

Li, Xiyuan ^{[1
]}

Fang, Wei ^{[1
]}

Guo, Xin ^{[1
]}

Tong, Limin ^{[1
]}

Lou, Jingyi ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Opt Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ Sci & Technol, Coll Sci, Hangzhou 310023, Zhejiang, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2014年 / 314卷

关键词：

Microfibers; Optical sensors; Strain sensors; Force sensors; REFRACTIVE-INDEX; SILICA; RESONATOR; INTERFEROMETER; FIBERS;

D O I：

10.1016/j.optcom.2013.09.072

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A microfiber biconically tapered from a standard optical fiber shows obvious sinusoidal oscillatory transmission spectrum due to the multimode interference, with evident blue-shifted peak wavelength when applying an axial force. Based on this force-induced spectral shift, here we experimentally demonstrate compact microfiber strain and force sensors with low optical power and high sensitivity. With a 15-mu W probing light, measured sensitivity of a 2.5-mu m-diameter microfiber for the strain and elongation sensing are 4.84 pm/mu epsilon and 404 pm/mu m respectively, with a force detection limit down to 50 mu N. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：28 / 30

页数：3

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