Temperature-insensitive Mach-Zehnder interferometric strain sensor based on concatenating two waist-enlarged fiber tapers

被引：28
|
作者：
Xu, Feng [1 ]
Li, Can [1 ]
Ren, Dongxu [1 ]
Lu, Lu [1 ]
Lu, Weiwei [1 ]
Feng, Fei [1 ]
Yu, Benli [1 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2012年 / 10卷 / 07期
基金：
中国国家自然科学基金;
关键词：
PHOTONIC CRYSTAL FIBER; OPTICAL-FIBER; GRATINGS;
D O I：
10.3788/COL201210.070603
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel temperature-insensitive strain sensor, based on an in-line Mach-Zehnder interferometer, is fabricated by concatenating two waist-enlarged fiber tapers separated by a short piece of photonic crystal fiber. The interference spectrum of the proposed sensor is analyzed in detail. Experimental results demonstrate that this sensor has a strain sensitivity of 3.02 pm/mu epsilon and maintains the temperature insensitivity feature. The proposed sensor has great potential in diverse sensing applications due to its advantages, such as its compact size, low cost, and simple fabrication process.
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页数：4
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