High sensitivity all-fiber Sagnac interferometer temperature sensor using a selective ethanol-filled photonic crystal fiber

被引：28

作者：

Li, Xue-Gang ^{[1
]}

Zhao, Yong ^{[1
,2
]}

Zhou, Xue ^{[1
]}

Cai, Lu ^{[1
]}

机构：

[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China

[2] Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Liaoning, Peoples R China

来源：

INSTRUMENTATION SCIENCE & TECHNOLOGY | 2018年 / 46卷 / 03期

基金：

中国国家自然科学基金;

关键词：

All-fiber Sagnac interferometer; ethanol selective-filling photonic crystal fiber; optical fiber; temperature sensor; STRAIN;

D O I：

10.1080/10739149.2017.1380038

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An all-fiber Sagnac temperature sensor based on 3dB tapered coupling and ethanol selective-filled photonic crystal fiber was demonstrated theoretically and experimentally. The ethanol selectivity-filled photonic crystal fiber has noncircular symmetry and thus exhibits birefringence. The ethanol selective-filled photonic crystal fiber, acting as the sensing element, was inserted in a Sagnac loop interferometer to measure temperature. The output spectra of Sagnac interferometer applied different temperatures were measured and analyzed. Experimental results have shown the temperature sensitivity of the Sagnac interferometer is 1.65nm/degrees C in the range of 25-33 degrees C.

引用

页码：253 / 264

页数：12

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