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Proceedings Paper

Ultra-high sensitive temperature sensor based on multimode fiber Mach-Zehnder interferometer
Author(s): Ai Zhou; Yaxun Zhang; Yuanyuan Yang; Jun Yang; Zhihai Liu
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Paper Abstract

We propose an ultra-high sensitive temperature sensor based on multimode fiber (MMF) Mach-Zehnder interferometer (MZI). The multimode fiber MZI is composed of a short section of MMF inserting between another two pieces of MMFs with large lateral offset. The sensing head is packaged in a capillary which is filled with glycerol-water solution. At the offset splice interface, part of the light in the lead-in MMF is coupled into the glycerol-water solution around the sensing MMF and the remainder propagates along the cladding of the sensing MMF. Due to the large thermo-optic coefficient of the glycerol-water solution, the transmission spectrum of the MMF-based MZI shift quickly with temperature variation. Experimental results show that the temperature sensitivity is as high as 8.23 nm/°C.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91572A (2 June 2014); doi: 10.1117/12.2059534
Show Author Affiliations
Ai Zhou, Harbin Engineering Univ. (China)
Yaxun Zhang, Harbin Engineering Univ. (China)
Yuanyuan Yang, Harbin Engineering Univ. (China)
Jun Yang, Harbin Engineering Univ. (China)
Zhihai Liu, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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