Highly Sensitive Curvature Sensor Using an In-Fiber Mach-Zehnder Interferometer

被引:60
作者
Wang, Ruohui [1 ]
Zhang, Jing [1 ]
Weng, Yinyan [1 ]
Rong, Qiangzhou [1 ]
Ma, Yue [1 ]
Feng, Zhongyao [1 ]
Hu, Manli [1 ]
Qiao, Xueguang [1 ]
机构
[1] NW Univ Xian, Dept Phys, Xian 710069, Peoples R China
基金
中国国家自然科学基金;
关键词
Curvature measurement; Mach-Zehnder interferometer; optical fiber sensor; BENDING SENSOR; TILTED FIBER; LONG-PERIOD; TEMPERATURE; OFFSET;
D O I
10.1109/JSEN.2013.2243834
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 highly sensitive curvature sensor using an in-fiber Mach-Zehnder interferometer is proposed and experimentally demonstrated. The sensor has a simple configuration-a short section of single-mode fiber is sandwiched between two short sections of multimode fibers to achieve a compact in-fiber Mach-Zehnder interferometer. The wavelength shift of selected dip in the Mach-Zehnder interference spectrum responds linearly with curvature and shows a high sensitivity up to -14.40 +/- 0.02 nm * m.
引用
收藏
页码:1766 / 1770
页数:5
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