Photonic Sensors, Volume. 4, Issue 3, 193(2014)
Temperature Insensitive Bending Sensor Based on In-Line Mach-Zehnder Interferometer
A simple and compact fiber bending sensor based on the Mach-Zehnder interferometer was proposed. A photonic crystal fiber (PCF) with a length of 10 mm was spliced by collapsing air holes with two conventional single mode fibers to consist of an all fiber bending sensor. The sensitivity of 0.53 nm/m-1 was obtained at 1586 nm for the curvature range from 0 to 8.514 m-1. The temperature sensitivity was very low. The measurement error due to the temperature effect was about 8.68×10-3 m-1/℃, and the temperature effect in the curvature measurement could be ignored. This device can avoid the cross sensitivity of the temperature in the curvature measurement.
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Xue CHEN, Yongqin YU, Xiaomei XU, Quandong HUANG, Zhilong OU, Jishun WANG, Peiguang YAN, and Chenlin DU. Temperature Insensitive Bending Sensor Based on In-Line Mach-Zehnder Interferometer[J]. Photonic Sensors, 2014, 4(3): 193
Received: Nov. 26, 2013
Accepted: Dec. 11, 2013
Published Online: Jul. 10, 2014
The Author Email: YU Yongqin (yuyq@szu.edu.cn)
CSTR:32186.14.