Intensity detection scheme of sensors based on the modal interference effect of few mode fiber

被引：17
作者：
Su, Juan [1 ]
Dong, Xiaopeng [1 ]
Lu, Chenxu [1 ]
机构：
[1] Xiamen Univ, Sch Informat Sci & Technol, Inst Lightwave Technol, Xiamen 361005, Fujian, Peoples R China
来源：
MEASUREMENT | 2016年 / 79卷
基金：
中国国家自然科学基金;
关键词：
Optic fiber sensor; Modal interference; Few mode fiber; STRAIN;
D O I：
10.1016/j.measurement.2015.09.049
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The transmission spectrum and power of the few mode fiber (FMF) under different strain/temperature are studied theoretically and experimentally. Significant shift of the critical wavelength of FMF can be produced when the measurement range is large. An intensity detection scheme with broadband source is proposed to overcome the problem encountered by the traditional measurement methods such as peaks shifts detection and transmission detection at a fixed single wavelength. And the scheme show larger dynamic range and larger linear operating range when the length of FMF is shorter, which can make the sensor more compact. The experimental result agrees well with the theoretical calculation. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：182 / 187
页数：6
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