Acoustic vibration sensor based on nonadiabatic tapered fibers

被引：65

作者：

Xu, Ben ^{[1
]}

Li, Yi ^{[1
]}

Sun, Miao ^{[1
]}

Zhang, Zhen-Wei ^{[1
]}

Dong, Xin-Yong ^{[1
]}

Zhang, Zai-Xuan ^{[1
]}

Jin, Shang-Zhong ^{[1
]}

机构：

[1] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China

来源：

OPTICS LETTERS | 2012年 / 37卷 / 22期

基金：

中国国家自然科学基金;

关键词：

ULTRASOUND DETECTION; SENSING SYSTEM; ACCELEROMETER; INTERFEROMETER;

D O I：

10.1364/OL.37.004768

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple and low-cost vibration sensor based on single-mode nonadiabatic fiber tapers is proposed and demonstrated. The environmental vibrations can be detected by demodulating the transmission loss of the nonadiabatic fiber taper. Theoretical simulations show that the transmission loss is related to the microbending of the fiber taper induced by vibrations. Unlike interferometric sensors, this vibration sensor does not need any feedback loop to control the quadrature point to obtain a stable performance. In addition, it has no requirement for the coherence of the light source and is insensitive to temperature changes. Experimental results show that this sensing system has a wide frequency response range from a few hertz to tens of kilohertz with the maximal signal to noise ratio up to 73 dB. (C) 2012 Optical Society of America

引用

页码：4768 / 4770

页数：3

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