Investigation of the high sensitivity RI sensor based on SMS fiber structure

被引：71
|
作者：
Zhao, Yong [1 ,2 ,3 ]
Cai, Lu [1 ]
Li, Xue-Gang [1 ]
Meng, Fan-Chao [1 ]
Zhao, Zhao [1 ]
机构：
[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Peoples R China
[2] Stat Key Lab Integrated Automat Proc Ind Technol, Shenyang 110819, Peoples R China
[3] Res Ctr Natl Met Automat, Shenyang 110819, Peoples R China
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2014年 / 205卷
基金：
中国国家自然科学基金;
关键词：
Optical fiber sensor; SMS; Modal interference; Reflex index sensing; Wavelength shift measurement; REFRACTOMETER;
D O I：
10.1016/j.sna.2013.10.023
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 high sensitive refractive index (RI) sensor based on a Single-mode Multimode Single-mode (SMS) fiber structure was used and experimentally demonstrated. The dip in the measured spectrum signal caused by the modal interference shifted obviously when the surrounding RI changed. The approximate linear relationship between surrounding RI and spectrum dip wavelength shift was obtained experimentally. The measurement sensitivity up to 286.2 nm/RIU was showed with the surrounding RI range from 1.33 to 1.3775, which means the measurement resolution about 3.5 x 10(-6) could be implemented if the wavelength shift measurement resolution of the Optical Spectrum Analyzer is 1 pm. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：186 / 190
页数：5
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