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Proceedings Paper

High-sensitivity Mach-Zehnder interferometer for temperature and strain measurements based on an embedded microcavity
Author(s): Zhao Zhang; Zhigang Cao; Tao Shui; Chenchen Yin; Hao Yin; Haiyu Tang; Benli Yu
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Paper Abstract

A novel all-fiber Mach-Zehnder modal interferometer (MZMI) for temperature and strain measurements is demonstrated. The interference between the core and the cladding modes in the single mode fiber (SMF) is utilized. To excite the cladding modes, a microcavity is embedded in the SMF. After propagating a distance in the cladding, the cladding modes will couple back to the core mode at the other point fabricated by core-offset splicing. The MZMI exhibits a high temperature sensitivity (<0.1nm/ °C) in the range of 200-600 (°C). The strain response of the MZMI is also investigated. This compact, simple and cost-effective MZMI owns potential applications in temperature and strain measurements.

Paper Details

Date Published: 20 December 2013
PDF: 8 pages
Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 90441E (20 December 2013); doi: 10.1117/12.2037731
Show Author Affiliations
Zhao Zhang, Anhui Univ. (China)
Zhigang Cao, Anhui Univ. (China)
Tao Shui, Anhui Univ. (China)
Chenchen Yin, Anhui Univ. (China)
Hao Yin, Anhui Univ. (China)
Haiyu Tang, Anhui Univ. (China)
Benli Yu, Anhui Univ. (China)


Published in SPIE Proceedings Vol. 9044:
2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Brian Culshaw; Xuping Zhang; Anbo Wang, Editor(s)

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