A U-shaped-wound fiber macro-bending loss crack sensor improved by an optical splitter

被引：14

作者：

Cheng, Lin ^{[1
]}

Song, Fubin ^{[1
]}

Zhang, Kai ^{[1
]}

Li, Yanlong ^{[1
]}

Yang, Jie ^{[1
]}

机构：

[1] Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Peoples R China

来源：

OPTICAL FIBER TECHNOLOGY | 2020年 / 58卷 / 58期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Fiber crack sensor; Fiber macro-bending loss; Optical splitter; U-shaped-wound sensor; Butterfly-shaped sensor;

D O I：

10.1016/j.yofte.2020.102259

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：

In traditional fiber macro-bending loss crack sensors, temperature can affect the light source and the fiber link between the light source and the optical splitter, thereby reducing the measurement accuracy of the sensor. In this study, by combining a U-shaped-wound fiber bending loss crack sensor and an optical splitter on the fiber link, we reduce the effect of temperature on the light source and the fiber link. Furthermore, the sensing mechanism of the improved fiber crack sensor is analyzed. Additionally, a comparison between the U-shaped-wound sensor and a butterfly-shaped sensor is carried out to compare both fiber crack sensors. The experimental results indicate that the optical splitter efficiently reduce the effect of temperature on the light source and the fiber link between the light source and the optical splitter and the U-shaped-wound fiber bending loss crack sensor has a better measurement accuracy.

引用

页数：10