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Proceedings Paper

A positioning algorithm for two-wavelength dual Mach-Zehnder interferometry vibration sensing system
Author(s): Chunyu Ma; Tiegen Liu; Kun Liu; Junfeng Jiang; Qinnan Chen; Liang Pan; Tianjiao Chai; Chang He
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Paper Abstract

A positioning algorithm for two-wavelength dual Mach-Zehnder interferometry (TDMZI) vibration sensing system is proposed. We employ the reciprocal of the interval between neighboring zero-crossing (NZC) points to represent the frequency distribution of the interference signal in time domain. Meanwhile, these reciprocal points are used to fit a curve and we use cross correlation to estimate the time delay of the two fitted curves. Finally we analysis the positioning error caused by the proposed positioning algorithm and experimentally demonstrate that the algorithm can be used to locating with positioning error of ±50m. This algorithm has a promising potential in long distance two-wavelength vibration sensing system.

Paper Details

Date Published: 10 August 2015
PDF: 8 pages
Proc. SPIE 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 962010 (10 August 2015); doi: 10.1117/12.2193126
Show Author Affiliations
Chunyu Ma, Tianjin Univ. (China)
Tiegen Liu, Tianjin Univ. (China)
Kun Liu, Tianjin Univ. (China)
Junfeng Jiang, Tianjin Univ. (China)
Qinnan Chen, Tianjin Univ. (China)
Liang Pan, Tianjin Univ. (China)
Tianjiao Chai, Tianjin Univ. (China)
Chang He, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 9620:
2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Xuping Zhang; David Erickson; Xudong Fan; Zhongping Chen, Editor(s)

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