Influence of stimulated Brillouin scattering on positioning accuracy of long-range dual Mach-Zehnder interferometric vibration sensors

Xiangge He; Shangran Xie; Shan Cao; Fei Liu; Xiaoping Zheng; Min Zhang; Han Yan; Guocai Chen

doi:10.1117/1.OE.55.11.116111

Influence of stimulated Brillouin scattering on positioning accuracy of long-range dual Mach-Zehnder interferometric vibration sensors

Xiangge He, Shangran Xie, Shan Cao, Fei Liu, Xiaoping Zheng, Min Zhang^*, Han Yan, Guocai Chen

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摘要

The properties of noise induced by stimulated Brillouin scattering (SBS) in long-range interferometers and their influences on the positioning accuracy of dual Mach-Zehnder interferometric (DMZI) vibration sensing systems are studied. The SBS noise is found to be white and incoherent between the two arms of the interferometer in a 1-MHz bandwidth range. Experiments on 25-km long fibers show that the root mean square error (RMSE) of the positioning accuracy is consistent with the additive noise model for the time delay estimation theory. A low-pass filter can be properly designed to suppress the SBS noise and further achieve a maximum RMSE reduction of 6.7 dB.

源语言	英语
文章编号	116111
期刊	Optical Engineering
卷	55
期	11
DOI	https://doi.org/10.1117/1.OE.55.11.116111
出版状态	已出版 - 1 11月 2016
已对外发布	是

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He, X., Xie, S., Cao, S., Liu, F., Zheng, X., Zhang, M., Yan, H., & Chen, G. (2016). Influence of stimulated Brillouin scattering on positioning accuracy of long-range dual Mach-Zehnder interferometric vibration sensors. Optical Engineering, 55(11), 文章 116111. https://doi.org/10.1117/1.OE.55.11.116111

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title = "Influence of stimulated Brillouin scattering on positioning accuracy of long-range dual Mach-Zehnder interferometric vibration sensors",

abstract = "The properties of noise induced by stimulated Brillouin scattering (SBS) in long-range interferometers and their influences on the positioning accuracy of dual Mach-Zehnder interferometric (DMZI) vibration sensing systems are studied. The SBS noise is found to be white and incoherent between the two arms of the interferometer in a 1-MHz bandwidth range. Experiments on 25-km long fibers show that the root mean square error (RMSE) of the positioning accuracy is consistent with the additive noise model for the time delay estimation theory. A low-pass filter can be properly designed to suppress the SBS noise and further achieve a maximum RMSE reduction of 6.7 dB.",

keywords = "distributed fiber vibration sensing, dual Mach-Zehnder interferometer, stimulated Brillouin scattering, time delay estimation",

author = "Xiangge He and Shangran Xie and Shan Cao and Fei Liu and Xiaoping Zheng and Min Zhang and Han Yan and Guocai Chen",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors.",

year = "2016",

month = nov,

day = "1",

doi = "10.1117/1.OE.55.11.116111",

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T1 - Influence of stimulated Brillouin scattering on positioning accuracy of long-range dual Mach-Zehnder interferometric vibration sensors

AU - He, Xiangge

AU - Xie, Shangran

AU - Cao, Shan

AU - Liu, Fei

AU - Zheng, Xiaoping

AU - Zhang, Min

AU - Yan, Han

AU - Chen, Guocai

PY - 2016/11/1

Y1 - 2016/11/1

N2 - The properties of noise induced by stimulated Brillouin scattering (SBS) in long-range interferometers and their influences on the positioning accuracy of dual Mach-Zehnder interferometric (DMZI) vibration sensing systems are studied. The SBS noise is found to be white and incoherent between the two arms of the interferometer in a 1-MHz bandwidth range. Experiments on 25-km long fibers show that the root mean square error (RMSE) of the positioning accuracy is consistent with the additive noise model for the time delay estimation theory. A low-pass filter can be properly designed to suppress the SBS noise and further achieve a maximum RMSE reduction of 6.7 dB.

AB - The properties of noise induced by stimulated Brillouin scattering (SBS) in long-range interferometers and their influences on the positioning accuracy of dual Mach-Zehnder interferometric (DMZI) vibration sensing systems are studied. The SBS noise is found to be white and incoherent between the two arms of the interferometer in a 1-MHz bandwidth range. Experiments on 25-km long fibers show that the root mean square error (RMSE) of the positioning accuracy is consistent with the additive noise model for the time delay estimation theory. A low-pass filter can be properly designed to suppress the SBS noise and further achieve a maximum RMSE reduction of 6.7 dB.

KW - distributed fiber vibration sensing

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KW - time delay estimation

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Influence of stimulated Brillouin scattering on positioning accuracy of long-range dual Mach-Zehnder interferometric vibration sensors

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