Review of research on Φ-OTDR system based on pulse modulation

Xiang Zhong; Shisong Zhao; Huaxia Deng; Jin Zhang; Mengchao Ma

doi:10.3788/IRLA20200166

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[18] T Zhu, X Xiao, Q He, et al. Enhancement of SNR and spatial resolution in Φ-OTDR system by using two-dimensional edge detection method. Journal of Lightwave Technology, 31, 2851-2856(2013).

[19] Y Muanenda, C J Oyoc, S Faralli, et al. A cost-effective distributed acoustic sensor using a commercial off-the-shelf DFB laser and direct detection phase-OTDR. IEEE Photonics Journal, 8, 1-10(2015).

[20] P G Juan, L R Cortes, M R Fernandez-Ruiz, et al. SNR enhancement in high-resolution phase-sensitive OTDR systems using chirped pulse amplification concepts. Optics Letters, 42, 1728-1731(2017).

[21] X Zhong, X C Gao, H X Deng, et al. Pulse-width multiplexing Φ-OTDR for nuisance-alarm rate reduction. Sensors, 18, 3509-3520(2018).

[22] X Zhong, S S Zhao, H X Deng, et al. Nuisance alarm rate reduction using pulse-width multiplexing Φ-OTDR with optimized positioning accuracy. Optics Communications, 456, 124571(2020).

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[26] M Zabihi, Y S Chen, T Zhou, et al. Continuous fading suppression method for Φ-OTDR systems using optimum tracking over multiple probe frequencies. Journal of Lightwave Technology, 37, 3602(2019).

[27] F Wang, Y Liu, T Wei, et al. Polarization fading elimination for ultra-weak FBG array-based Φ-OTDR using a composite double probe pulse approach. Optics Express, 27, 20468(2019).

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[31] B Lu, Z Q Pan, Z Y Wang, et al. High spatial resolution phase-sensitive optical time domain reflectometer with a frequency-swept pulse. Optics Letters, 42, 391-394(2017).

[33] T Zhu, Q He, X Xiao, et al. Modulated pulses based distributed vibration sensing with high frequency response and spatial resolution. Optics Express, 21, 2953(2013).

[34] Z Qin, L Chen, X Zou. Distributed vibration acoustic sensing with high frequency response and spatial resolution based on time-division multiplexing. Optics Communications, 331, 287-290(2014).

[35] Z Y Wang, Z Q Pan, Z Fang, et al. Ultra-broadband phase-sensitive optical time-domain reflectometry with a temporally sequenced multi-frequency source. Optics Letters, 40, 5192(2015).

[36] Jing Wu, Hanping Wu, Junbin Huang, et al. Research Progress in signal demodulation technology of fiber Bragg grating sensors. Chinese Optics, 7, 519-531(2014).

[37] Z N Wang, L Zhang, S Wang, et al. Coherent Φ-OTDR based on I/Q demodulation and homodyne detection. Optics Express, 24, 853-858(2016).

[38] L Zhou, F Wang, X C Wang, et al. Distributed strain and vibration sensing system based on phase-sensitive OTDR. IEEE Photonics Technology Letters, 27, 1884-1887(2015).

[39] J Pastor-Graells, H F Martins, A Garcia-Ruiz, et al. Single-shot distributed temperature and strain tracking using direct detection phase-sensitive OTDR with chirped pulses. Optics Express, 24, 13121(2016).

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[41] X G He, S R Xie, F Liu, et al. Multi-event waveform-retrieved distributed optical fiber acoustic sensor using dual-pulse heterodyne phase-sensitive OTDR. Optics Letters, 42, 442-445(2017).

[42] Y Muanenda, S Faralli, C J Oton, et al. Dynamic phase extraction in a modulated double-pulse Φ-OTDR sensor using a stable homodyne demodulation in direct detection. Optics Express, 26, 687(2018).

[43] Z Sha, H Feng, Z Zeng. Phase demodulation method in phase-sensitive OTDR without coherent detection. Optics Express, 25, 4831(2017).

[44] G Yang, X Fan, Q Liu, et al. Frequency response enhancement of direct-detection phase-sensitive OTDR by using frequency division multiplexing. Journal of Lightwave Technology, 36, 1197-1203(2018).