Dynamic strain measurement using small gain stimulated Brillouin scattering in STFT-BOTDR
Dynamic strain measurement using small gain stimulated Brillouin scattering in STFT-BOTDR
A distributed dynamic strain measurement is demonstrated using small gain stimulated Brillouin scattering (SBS) in Brillouin optical time domain reflectometry based on the short-time Fourier transform algorithm. The input power limits, frequency uncertainties for given pulse durations, fiber lengths, and the number of averaging are calculated. The output signal power and the signal-to-noise ratio of the system output are enhanced by SBS. It is found that the signal processing is faster and requires fewer averaging to achieve dynamic sensing performance along the fiber under test. A 60-Hz vibration on a 6-m fiber section at the end of a 935-m fiber is detected with the spatial resolution of 4 m with a sampling rate of 2.5 kS/s.
2718-2724
Li, Bo
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Luo, Linqing
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Yu, Yifei
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Soga, Kenichi
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Yan, Jize
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1 May 2017
Li, Bo
6e652d92-66f9-4bee-83be-21d7d6f4c86f
Luo, Linqing
e4ea964d-ab97-42f6-93a8-846a19007a1e
Yu, Yifei
5796fabf-53ec-4312-a5c0-93c172023d88
Soga, Kenichi
e43028e3-af4d-4ea4-a747-6cc6dacc849b
Yan, Jize
786dc090-843b-435d-adbe-1d35e8fc5828
Li, Bo, Luo, Linqing, Yu, Yifei, Soga, Kenichi and Yan, Jize
(2017)
Dynamic strain measurement using small gain stimulated Brillouin scattering in STFT-BOTDR.
IEEE Sensors Journal, 17 (09), , [7837678].
(doi:10.1109/JSEN.2017.2657119).
Abstract
A distributed dynamic strain measurement is demonstrated using small gain stimulated Brillouin scattering (SBS) in Brillouin optical time domain reflectometry based on the short-time Fourier transform algorithm. The input power limits, frequency uncertainties for given pulse durations, fiber lengths, and the number of averaging are calculated. The output signal power and the signal-to-noise ratio of the system output are enhanced by SBS. It is found that the signal processing is faster and requires fewer averaging to achieve dynamic sensing performance along the fiber under test. A 60-Hz vibration on a 6-m fiber section at the end of a 935-m fiber is detected with the spatial resolution of 4 m with a sampling rate of 2.5 kS/s.
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07837678
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Accepted/In Press date: 12 January 2017
e-pub ahead of print date: 31 January 2017
Published date: 1 May 2017
Organisations:
Nanoelectronics and Nanotechnology, Electronics & Computer Science
Identifiers
Local EPrints ID: 410737
URI: http://eprints.soton.ac.uk/id/eprint/410737
ISSN: 1530-437X
PURE UUID: 2ed54f0b-ed8b-455b-85d8-2fdfe2dfed99
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Date deposited: 09 Jun 2017 09:32
Last modified: 16 Mar 2024 04:23
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Author:
Bo Li
Author:
Linqing Luo
Author:
Yifei Yu
Author:
Kenichi Soga
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