Simultaneous measurement of strain and temperature with a long-period fiber grating inscribed Sagnac interferometer

被引：33
|
作者：
Kang, Juan [1 ,2 ]
Dong, Xinyong [1 ]
Zhao, Chunliu [1 ]
Qian, Wenwen [1 ]
Li, Mengchao [2 ]
机构：
[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China
[2] Shanghai Univ Sci & Technol, Sch Opt Elect & Comp Engn, Shanghai 200093, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2011年 / 284卷 / 08期
关键词：
Sagnac interferometer; Strain and temperature measurements; Polarization maintains fiber; Long-period fiber grating; SENSOR;
D O I：
10.1016/j.optcom.2011.01.002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A Sagnac interferometer with a long-period fiber grating (LPG) inscribed in the polarization-maintaining fiber (PMF) is proposed and experimentally demonstrated for simultaneous measurement of strain and temperature. Due to the different responses of the LPG and the Sagnac interferometer to strain and temperature, simultaneous measurement can be achieved by monitoring the wavelength shifts and the intensity changes of a resonance dip of the sensor setup. The experimental results show that the achieved sensitivities to strain and temperature are 6.4 x 10(-3) dB/mu epsilon and 0.65 nm/degrees C, respectively. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：2145 / 2148
页数：4
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