Dispersion Effects of High-Order-Mode Fiber on Temperature and Axial Strain Discrimination
A new approach utilizing effects of dispersion in the high-order-mode fibers (HOMFs) to effectively discriminate changes in environmental temperature and axial strain is proposed and experimentally demonstrated. Experimental characterization of a HOMF-based fiber modal interferometer with a sandwich fiber structure exhibits excellent agreements with numerical simulation results. A Fourier transform method of interferometry in the spatial frequency domain is adopted to distinguish mode coupling between different core-guided modes. Distinct phase sensitivities of multiple dispersion peaks are extracted by employing a novel phase demodulation scheme to realize dual-parameter sensing.
基金项目：The research is supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grants and Canada Research Chairs (CRC) Program. Ping Lu would like to acknowledge the Province of Ontario Ministry of Research and Innovation and the University of Ottawa for the financial support of the Vision 2020 Postdoctoral Fellowship.
Ping LU：Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Jia SONG：Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Ping LU：National Research Council Canada, Ottawa, ON K1A 0R6, Canada
Liang CHEN：Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Xiaoyi BAO：Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Xiaopeng DONG：Institute of Lightwave Technology, School of Information Science and Technology, Xiamen University, Xiamen, 361005, China
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Yanping XU,Ping LU,Jia SONG,Ping LU,Liang CHEN,Xiaoyi BAO,and Xiaopeng DONG. Dispersion Effects of High-Order-Mode Fiber on Temperature and Axial Strain Discrimination[J]. Photonic Sensors, 2015, 5(3): 224-234
Yanping XU,Ping LU,Jia SONG,Ping LU,Liang CHEN,Xiaoyi BAO,Xiaopeng DONG. Dispersion Effects of High-Order-Mode Fiber on Temperature and Axial Strain Discrimination[J]. Photonic Sensors, 2015, 5(3): 224-234