Abstract
Optical-pulse-coding (OPC) phase-sensitive optical time-domain reflectometry (Φ-OTDR) sends a train of pulses into a fiber, and has high spatial resolution decided by the duration of a subpulse while achieving signal-to-noise ratio (SNR) enhancement. OPC Φ-OTDR with a shorter measurement time is favorable. However, the scan rate, which is the reciprocal of the measurement time, is not easy to optimize. In this paper, mismatched filtering is introduced into OPC Φ-OTDR for the first time, which can reach the theoretical limit of scan rate determined by the fiber length. Also, the initial phase of each subpulse can be set arbitrarily, showing the capacity for controlling the location of interference fading. Although the design of the mismatched filter is based on the least-squares criterion, satisfactory decoding results are obtained, indicating that more advanced mismatched filter designs are worthy of further investigation to achieve higher performance.
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References
Fernández-Ruiz M R, Soto M A, Williams E F, et al. Distributed acoustic sensing for seismic activity monitoring. APL Photon, 2020, 5: 030901
Huang M F, Ji P, Wang T, et al. First field trial of distributed fiber optical sensing and high-speed communication over an operational telecom network. J Lightwave Technol, 2020, 38: 75–81
Kowarik S, Hussels M T, Chruscicki S, et al. Fiber optic train monitoring with distributed acoustic sensing: conventional and neural network data analysis. Sensors, 2020, 20: 450
Liang J J, Wang Z Y, Lu B, et al. Distributed acoustic sensing for 2D and 3D acoustic source localization. Opt Lett, 2019, 44: 1690–1693
Wang Z, Yang J, Gu J, et al. Multi-source aliasing suppression for distributed fiber acoustic sensing with directionally coherent enhancement technology. Opt Lett, 2020, 45: 5672–5675
Wang Y, Lv Y, Jin B, et al. Co-processing parallel computation for distributed optical fiber vibration sensing. Appl Sci, 2020, 10: 1747
Muanenda Y, Oton C J, Faralli S, et al. A cost-effective distributed acoustic sensor using a commercial off-the-shelf DFB laser and direct detection phase-OTDR. IEEE Photon J, 2016, 8: 1–10
Xiong J, Wang Z, Wu Y, et al. Long-distance distributed acoustic sensing utilizing negative frequency band. Opt Express, 2020, 28: 35844–35856
Martins H F, Shi K, Thomsen B C, et al. Real time dynamic strain monitoring of optical links using the backreflection of live PSK data. Opt Express, 2016, 24: 22303–35856
Shiloh L, Levanon N, Eyal A, et al. Highly-sensitive distributed dynamic strain sensing via perfect periodic coherent codes. In: Proceedings of the 26th International Conference on Optical Fiber Sensors, Lausanne, 2018. TuE25
Mompo J J, Shiloh L, Arbel N, et al. Distributed dynamic strain sensing via perfect periodic coherent codes and a polarization diversity receiver. J Lightwave Technol, 2019, 37: 4597–4602
Sagues M, Piñeiro E, Cerri E, et al. Two-wavelength phase-sensitive OTDR sensor using perfect periodic correlation codes for measurement range enhancement, noise reduction and fading compensation. Opt Express, 2021, 29: 6021–6035
Dorize C, Awwad E, Renaudier J. High Sensitivity φ-OTDR over long distance with polarization multiplexed codes. IEEE Photon Technol Lett, 2019, 31: 1654–1657
Wang Z, Zhang B, Xiong J, et al. Distributed acoustic sensing based on pulse-coding phase-sensitive OTDR. IEEE Internet Things J, 2019, 6: 6117–6124
Wu Y, Wang Z, Xiong J, et al. Bipolar-coding Φ-OTDR with interference fading elimination and frequency drift compensation. J Lightwave Technol, 2020, 38: 6121–6128
Ackroyd M, Ghani F. Optimum mismatched filters for sidelobe suppression. IEEE Trans Aerosp Electron Syst, 1973, AES-9: 214–218
Zejak A J, Zentner E, Rapajic P B. Doppler optimised mismatched filters. Electron Lett, 1991, 27: 558–560
Blunt S D, Gerlach K. Adaptive pulse compression via MMSE estimation. IEEE Trans Aerosp Electron Syst, 2006, 42: 572–584
de Maio A, Piezzo M, Iommelli S, et al. Design of Pareto-optimal radar receive filters. Int J Electron Telecommun, 2011, 57: 477–481
Xu L L, Liu H W, Yin K Y, et al. Joint design of phase coded waveform and mismatched filter. In: Proceedings of 2015 IEEE Radar Conference, Johannesburg, 2015. 32–36
Tan U, Rabaste O, Adnet C, et al. A sequence-filter joint optimization. In: Proceedings of the 26th European Signal Processing Conference (EUSIPCO), Rome, 2018. 2335–2339
Jing Y, Liang J L, Vorobyov S A, et al. Joint design of radar transmit waveform and mismatched filter with low sidelobes. In: Proceedings of the 28th European Signal Processing Conference (EUSIPCO), Amsterdam, 2021. 1936–1940
Wu Y, Wang Z, Xiong J, et al. Interference fading elimination with single rectangular pulse in Phi-OTDR. J Lightwave Technol, 2019, 37: 3381–3387
Fan X, Yang G, Wang S, et al. Distributed fiber-optic vibration sensing based on phase extraction from optical reflectometry. J Lightwave Technol, 2017, 35: 3281–3288
Blunt S D, Mokole E L. Overview of radar waveform diversity. IEEE Aerosp Electron Syst Mag, 2016, 31: 2–42
Xiong J, Jiang J, Wu Y, et al. Chirped-pulse coherent-OTDR with predistortion. J Opt, 2018, 20: 034001
Jiang J, Wang Z, Wang Z, et al. Coherent Kramers-Kronig receiver for boldsymbol Φ-OTDR. J Lightwave Technol, 2019, 37: 4799–4807
Wang X, Lu B, Wang Z, et al. Interference-fading-free Φ-OTDR based on differential phase shift pulsing technology. IEEE Photon Technol Lett, 2019, 31: 39–42
Zhang Y X, Zhou T, Ding Z W, et al. Classification of interference-fading suppressed Φ-OTDR signal using optimal peak-seeking and machine learning. In: Proceedings of Optoelectronic Devices and Integration IX, 2020. 6
Wang Z, Zhang L, Wang S, et al. Coherent Φ-OTDR based on I/Q demodulation and homodyne detection. Opt Express, 2016, 24: 853–858
Acknowledgements
This work was supported by National Natural Science Foundation of China (Grant Nos. 62075030, 61731006), Sichuan Provincial Project for Outstanding Young Scholars in Science and Technology (Grant No. 2020JDJQ0024), and the 111 Project (Grant No. B14039).
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Liang, Y., Wang, Z., Lin, S. et al. Optical-pulse-coding phase-sensitive OTDR with mismatched filtering. Sci. China Inf. Sci. 65, 192303 (2022). https://doi.org/10.1007/s11432-021-3329-6
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DOI: https://doi.org/10.1007/s11432-021-3329-6