A Highly Accurate Curvature Sensor Based on a Rough Side-Polished Single-Mode Fiber

被引：3

作者：

Yang Yang ^{[1
]}

Zhu Xiaotong ^{[1
]}

Yan Liangjun ^{[1
]}

Cheney Xuze ^{[1
]}

Song Zhangqi ^{[1
]}

机构：

[1] Southern Univ Sci & Technol, Coll Innovat & Entrepreneurship, Shenzhen 518060, Guangdong, Peoples R China

来源：

ACTA OPTICA SINICA | 2020年 / 40卷 / 14期

关键词：

fiber optics; side-polished fiber; curvature measurement; optical fiber sensing; intensity demodulation; BENDING SENSOR; TEMPERATURE; GRATINGS;

D O I：

10.3788/AOS202040.1406004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this study, a fiber curvature sensor was proposed based on a rough side-polished single-mode fiber with a sensitizing technology. In addition, the transmittance of sensitive area in case of the fiber curvature sensor was accurately measured using the pulse self-reference demodulation technique. The experimental results obtained based on the cantilever beam denote the linear response coefficient of the sensor sensitive area is 0.593 and that the noise amplitude in the measurement system is 5. 9 x 10(-3). The curvature resolution of the system can become 9.95 x 10(-3) m(-1) when the cantilever beam displacement is converted to curvature. Furthermore, the curvature sensor has a simple structure and a wide response bandwidth and can be used in a time-division multiplexing system.

引用

页数：5