Title :
Highly Sensitive Curvature Sensor Using an In-Fiber Mach–Zehnder Interferometer
Author :
Ruohui Wang ; Jing Zhang ; Yinyan Weng ; Qiangzhou Rong ; Yue Ma ; Zhongyao Feng ; Manli Hu ; Xueguang Qiao
Author_Institution :
Dept. of Phys., Northwest Univ., Xi´an, China
Abstract :
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 * m.
Keywords :
Mach-Zehnder interferometers; curvature measurement; fibre optic sensors; highly sensitive curvature sensor; in-fiber Mach-Zehnder interferometer; short section; single-mode fiber; wavelength shift; Interference; Optical fiber couplers; Optical fiber polarization; Optical fiber sensors; Temperature measurement; Curvature measurement; Mach–Zehnder interferometer; optical fiber sensor;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2013.2243834
