High Sensitive Micro-Displacement Sensor Based on M-Z Interferometer by a Bowknot Type Taper

被引：40

作者：

Shen, Chang-Yu ^{[1
]}

Chu, Jin-Lei ^{[1
]}

Lu, Yan-Fang ^{[1
]}

Chen, De-Bao ^{[1
]}

Zhong, Chuan ^{[1
]}

Li, Yi ^{[1
]}

Dong, Xin-Yong ^{[1
]}

Jin, Shang-Zhong ^{[1
]}

机构：

[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2014年 / 26卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Micro-displacement; Mach-Zehnder interferometer; bowknot-type taper;

D O I：

10.1109/LPT.2013.2289320

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A simple, compact, and high sensitive optical fiber Mach-Zehnder interferometer (MZI) based micro-displacement sensor is presented. The MZI is fabricated by a core offset connecting of two single mode fibers and bowknot-type taper. The shifts of the MZI transmission spectrum correspond to the micro-displacements on the cross section of the core offset. For the micro-displacement ranging from 0 to 13 mu m, the proposed sensor shows a high sensitivity of -1.89 dB/mu m, which is almost 787 times higher than that of the current similar existing micro-displacement sensor. In addition by using the intensity demodulation method, the proposed sensor can overcome the temperature and displacement cross-sensitivity effects.

引用

页码：62 / 65

页数：4

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