Experimental demonstration of offset-induced sensitivity enhancement in SMS-based temperature and strain sensing

被引：5
|
作者：
Wang, Kun [1 ]
Mizuno, Yosuke [2 ]
Lee, Heeyoung [3 ]
Dong, Xingchen [1 ]
Kurz, Wolfgang [1 ]
Fink, Maximilian [1 ]
Jakobi, Martin [1 ]
Koch, Alexander W. [1 ]
机构：
[1] Tech Univ Munich, Inst Measurement Syst & Sensor Technol, Sch Computat Informat & Technol, Theresienstr 90, D-80333 Munich, Germany
[2] Yokohama Natl Univ, Fac Engn, 79-5 Tokiwadai,Hodogaya Ku, Yokohama 2408501, Japan
[3] Shibaura Inst Technol, Coll Engn, 3-7-5 Toyosu,Koto Ku, Tokyo 1358548, Japan
来源：
APPLIED PHYSICS EXPRESS | 2023年 / 16卷 / 05期
基金：
日本学术振兴会;
关键词：
multimode fiber; single-mode-multimode-single-mode fiber sensor; fiber sensor; core-offset; REFRACTIVE-INDEX; FIBER; SENSOR;
D O I：
10.35848/1882-0786/acd046
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A simple, inexpensive, and high-sensitivity temperature and strain sensor based on a single-mode-multimode-single-mode (SMS) structure with core offset is developed and experimentally characterized. This sensor does not require specialty fibers and can be fabricated using a standard fiber fusion splicer. The dependencies of the temperature and strain sensitivities on the core-offset amplitudes at the input and output single-mode/multimode fiber boundaries are investigated. The results indicate that the maximum temperature and strain sensitivities are two times and eight times higher than those of the standard SMS structure, respectively. The limit of the sensitivity enhancement by core offset is also revealed.
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收藏
页数：5
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