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Proceedings Paper

Intensity-modulated strain sensor based on fiber Mach-Zehnder interferometer employing core-offset
Author(s): Jiangtao Zhou; Changrui Liao; Yiping Wang; Kaiming Yang; Xiaoyong Zhong; Zhengyong Li; Yingjie Liu; Guangjun Wang
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Paper Abstract

A novel intensity-modulated strain sensor based on a fiber in-line Mach-Zehnder interferometer is proposed and demonstrated, which is constructed by splicing a thin core fiber between two single mode fibers with a core offset. Such an interferometer exhibits a large fringe visibility of more than 15 dB. When used in axial strain sensing from 0 to 400 με, the interferometer operates at intensity mode of detection with a high sensitivity of -0.023 dB/μεwithout the cross sensitivity between temperature and strain. Its ease of fabrication, high strain sensitivity and intensity mode of detection makes it a low-cost alternative to existing sensing applications.

Paper Details

Date Published: 15 October 2013
PDF: 4 pages
Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89240X (15 October 2013); doi: 10.1117/12.2034250
Show Author Affiliations
Jiangtao Zhou, Shenzhen Univ. (China)
Changrui Liao, Shenzhen Univ. (China)
Yiping Wang, Shenzhen Univ. (China)
Kaiming Yang, Shenzhen Univ. (China)
Xiaoyong Zhong, Shenzhen Univ. (China)
Zhengyong Li, Shenzhen Univ. (China)
Yingjie Liu, Shenzhen Univ. (China)
Guangjun Wang, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 8924:
Fourth Asia Pacific Optical Sensors Conference
Minghong Yang; Dongning Wang; Yun-Jiang Rao, Editor(s)

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