Affiliation:
1. Anhui Polytechnic University
2. Anhui University
Abstract
A fiber optic temperature and strain sensor using dual Mach–Zehnder interferometers (MZIs) is proposed. The dual MZIs were fabricated by fusion splicing of two different fibers between two single-mode fibers. The two fibers of thin-core fiber and small-cladding polarization maintaining fiber were fusion spliced with a core offset. As the responses of the two MZIs are different in terms of temperature and strain, simultaneous temperature and strain measurement were experimentally validated by selecting two resonant dips in the transmission spectrum to construct a matrix. Experimental results show that the proposed sensors had the maximum temperature sensitivity of 66.67 pm/°C and the maximum strain sensitivity of −2.0pm/µε. The minimum discriminated temperature and strain of the two proposed sensors were 0.20°C and 0.71 µε, and 0.33°C and 0.69 µε, respectively. The proposed sensor has promising application prospects due to the merits of ease of fabrication, low costs, and good resolution.
Funder
Natural Science Foundation of Anhui Provincial Higher Education
Open Fund of Information Materials and Intelligent Sensing Laboratory of Anhui Province
Research Start-up Fund of Anhui Polytechnic University
University Synergy Innovation Program of Anhui Province
National Innovation and Entrepreneurship Training Program for College Students
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
1 articles.
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