A high performance distributed sensor system with multi-intrusions simultaneous detection capability based on phase sensitive OTDR

• Autorzy: Zhan, Y. , Yu, Q. , Wang, K. , Yang, F. , Kong, Y. , Zhao, X.
• Języki publikacji: EN

Abstrakty

EN

A high performance distributed sensor system with multi-intrusions simultaneous detection capability based on phase sensitive OTDR (Φ-OTDR) has been proposed and demonstrated. To improve system performance, three aspects have been investigated. Firstly, a model of one-dimensional impulse response of backscattered light and a Monte Carlo method have been used to study how the laser line width affects the system performance. Theoretical and experimental results show that the performances of the system, especially the signal-noise-ratio (SNR), decrease with the broadening of laser linewidth. Secondly, a temperature-compensated fibre Bragg grating with a 3 dB linewidth of 0.05 nm and a wavelength stability of 0.1 pm has been applied as an optical filter for effective denoising. Thirdly, a novel interrogation method for multi-intrusions simultaneous detection is proposed and applied in data denoising and processing. Consequently, benefiting from the three-in-one improvement, a high performance Φ-OTDR has been realized and four simultaneous applied intrusions have been detected and located at the same time along a 14 km sensing fibre with a spatial resolution of 6m and a high SNR of 16 dB. To the best of our knowledge, this is the most multifunctional Φ-OTDR up to now and it can be used for perimeter and/or pipeline intrusion real-time monitoring.

Słowa kluczowe

EN

distributed optical sensor; optical time-domain reflectometer; phase sensitive; multi-intrusion detection; interrogation method; Rayleigh backscattering

• Czasopismo: Opto-Electronics Review
• Rocznik: 2015
• Tom: Vol. 23, No. 3
• Strony: 187-194
• Opis fizyczny: Bibliogr. 15 poz., wykr.

Twórcy

autor

Zhan, Y.

• The Key Laboratory of High-Performance Fibre and Product, Ministry of Education, Donghua University, Shanghai, 201620, P.R. China,
• College of Science, Donghua University, Shanghai, 201620, P.R. China

autor

Yu, Q.

• College of Science, Donghua University, Shanghai, 201620, P.R. China

autor

Wang, K.

• College of Science, Donghua University, Shanghai, 201620, P.R. China

autor

Yang, F.

• College of Science, Donghua University, Shanghai, 201620, P.R. China

autor

Kong, Y.

• College of Science, Donghua University, Shanghai, 201620, P.R. China

autor

Zhao, X.

• College of Science, Donghua University, Shanghai, 201620, P.R. China

Bibliografia

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• 4. Y.L Lu, T. Zhu, L. Chen, and X. Bao, “ Distributed vibration sensor based on coherent detection of phase-OTDR[J]”. J. Lightwave Technol. 28, 3243-3249 (2010).
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• 6. J. Park, W. Lee, and H.F. Taylor, “A fibre optic intrusion sensor with the configuration of an optical time domain reflectometer using coherent interference of Rayleigh scattering”, Proc. SPIE 3555, 49-56 (1998).
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• 9. X. Kongli, R. Yunjiang, and R. Zengling, “Distributed optical fibre sensing system based of rayleigh scattering light - OTDR using single-mode fibre laser with high power and narrow linewidth”, Acta Opt. Sinica 28, 569-72 (2008).
• 10. T. Zhu, X.H. Xiao, Q. He, and D.M. Diao, “Enhancement of SNR and spatial resolution in Ф-OTDR System by using two-dimensional edge detection method”. J. Lightwave Technol. 31, 2851-2856 (2013).
• 11. Y. Koyamada, M. Imahama, K. Kubota, and K. Hogari, “Fibre-optic distributed strain and temperature sensing with very high measurand resolution over long range using coherent OTDR”, J. Lightwave Technol. 27, 1142-146 (2009).
• 12. L.D. Lu, Y.J. Song, F. Zhu, and X.P. Zhang., “Dual frequency probe based coherent optical time domain reflectometry”, Opt. Commum. 285, 2492-2495 (2012).
• 13. L.E. Richter, H.I. Mandelberg, M. Kruger, and P. McGrath, “Linewidth determination from self-heterodyne measurements with subcoherence delay time”, IEEE J. Quantum Elect. 22, 2070-2074 (1986).
• 14. J.C. Juarez and H.F. Taylor, “Polarization discrimination in a phase-sensitive optical time-domain reflectometer intrusion-sensor system”, Opt. Lett. 30, 3284-3286 (2005).
• 15. J.C. Juarez, “Distributed fibre optic intrusion sensor system for monitoring long perimeters”, PhD Dissertation, Texas A&M University, 2005.

Identyfikatory

DOI

10.1515/oere-2015-0032