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Proceedings Paper

Fiber loop ringdown strain sensor with photonic crystal fiber based Mach-Zehnder interferometer
Author(s): Wenjun Zhou; Wei Chang Wong; Chi Chiu Chan; Li-Yang Shao; Xinyong Dong
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Paper Abstract

A highly sensitive strain sensor is demonstrated by inserting a photonic crystal fiber (PCF) based Mach-Zehnder interferometer (MZI) in a cavity ringdown fiber loop as the lossy sensing element. The MZI consists of a piece of PCF spliced to single-mode fibers, in which the PCF air holes are collapsed over a short region at two splicing points for coupling the core and cladding modes. By measuring the decay constants of the fiber ringdown loop, a high strain sensitivity of ~0.21 μs-1/mε and a minimum detectable strain of ~3.6 με were obtained.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77530R (17 May 2011); doi: 10.1117/12.884985
Show Author Affiliations
Wenjun Zhou, China Jiliang Univ. (China)
Nanyang Technological Univ. (Singapore)
Wei Chang Wong, Nanyang Technological Univ. (Singapore)
Chi Chiu Chan, Nanyang Technological Univ. (Singapore)
Li-Yang Shao, China Jiliang Univ. (China)
Carleton Univ. (Canada)
Xinyong Dong, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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