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Proceedings Paper

Experimental research on the effect of Young's modulus on optical fiber microbend strain sensor
Author(s): Ruichen Tao; Min Li
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Paper Abstract

By investigation of the theoretical model of fiber microbend sensor, and derivative of the basic function of microbend with respect to applied external force F then Young's modulus E, we get an expression of sensor's output signal as a function of E which shows that the output of the microbend sensor decreases with the Young's modulus of the gripper increasing, and the change is nonlinear. To verify the accuracy of the theoretical derivation, we design and make four optical fiber microbend grippers of different materials, including stainless steel, Polyvinyl Chloride (PVC), polypropylene (PPR) and bamboo, with the same geometric parameters of grippers such as a mechanical period derived for the maximal sensitivity from the well-known microbend interval equation, and carry out the demonstration experiments under the same initial testing conditions. The initial testing condition has been adjusted during the process of manufacturing and installing the fiber microbend gripper. The experimental data based on our design testing systems showed that the outputs of the microbend sensors match our theoretical simulation curves well to the applied external force F. The conclusion might be useful for future reference of microbend strain sensors design.

Paper Details

Date Published: 9 November 2010
PDF: 8 pages
Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78533N (9 November 2010); doi: 10.1117/12.871631
Show Author Affiliations
Ruichen Tao, Wuhan Univ. of Technology (China)
Min Li, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7853:
Advanced Sensor Systems and Applications IV
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan; Lin Zhang, Editor(s)

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