[1] [1] LIU T G, YU Zh, JIANG J F, et al. Advances of some critical technologies in discrete and distributed optical fiber sensing research［J］. Acta Physica Sinica, 2017, 66(7): 070705(in Chinese).

[2] [2] RAO Y J. Research progress of long-distance distributed optical fiber sensing technology［J］. Acta Physica Sinica, 2017, 66(7): 074207 (in Chinese).

[3] [3] ZHOU F, ZHOU H, DIAO Y L. Development of intelligent perception key technology in the ubiquitous internet of things in electricity ［J］. Proceedings of the CSEE, 2020, 40(1): 70-82(in Chinese).

[4] [4] LIANG Y X, HUANG Y H, WANG Sh, et al. Fiber optical sensor demodulation research based on asymmetric 3×3 coupler［J］. Laser Technology, 2021, 45(1): 25-30 (in Chinese).

[5] [5] ZHANG Y R, LIAO Q Y, DONG Zh D, et al. Fiber Bragg grating rhombic strain sensor［J］.Laser Technology, 2021, 45(6): 799-805(in Chinese).

[6] [6] BAO X, CHEN L. Recent progress in distributed fiber optic sensors［J］. Sensors, 2012, 12(7): 8601-8639.

[7] [7] BARRIAS A, CASAS J R, VILLALBA S. A review of distributed optical fiber sensors for civil engineering applications［J］. Sensors, 2016, 16(5): 748.

[8] [8] CHAI Q, LUO Y, REN J, et al. Review on fiber-optic sensing in health monitoring of power grids［J］. Optical Engineering, 2019, 58(7): 072007.

[9] [9] MOTIL A, BERGMAN A, TUR M. State of the art of Brillouin fiber-optic distributed sensing ［J］. Optics & Laser Technology, 2016, 78: 81-103.

[10] [10] BAO X, CHEN L. Recent progress in Brillouin scattering based fiber sensors ［J］. Sensors, 2011, 11(4): 4152-4187.

[11] [11] ZHU T, ZHENG H, ZHANG J D. Progress in research of Brillouin optical time domain analysis for dynamic strain sensing ［J］. Journal of Applied Sciences—Electronics and Information Engineering, 2020, 38(2): 197-214(in Chinese).

[12] [12] LIU W, SHANG Q F. 2-D lifting wavelet de-noising method for Rayleigh BOTDA system ［J］. Laser Technology, 2018, 42(3): 346-350 (in Chinese).

[13] [13] XU Zh N, ZHAO L J, QIN H. Selection of spectrum model in estimation of Brillouin frequency shift for distributed optical fiber sensor ［J］. Optik, 2019, 199: 163355.

[14] [14] LI J, LIU W, LIU J, et al. Simultaneous measurement of strain and temperature with fiber Bragg grating sensor based on artificial neural network［J］. Laser & Optoelectronics Progress, 2010, 47(6): 118-121 (in Chinese).

[15] [15] SUI Y. Research on data processing of Brillouin optical fiber sensing system based on neural network［D］. Changchun: Jilin University, 2019: 32-37 (in Chinese).

[16] [16] SUI Y, MENG Ch N, DONG W, et al. Method for direct temperature extraction of Brillouin scattering spectra based on radial basis function neural network［J］. Acta Optica Sinica, 2018, 38(12): 1229001 (in Chinese).

[17] [17] YAN P F, ZHANG Ch Sh. Artificial neural network and simulated evolutionary computation［M］.2nd ed. Beijing: Tsinghua University Press, 2005: 13-15 (in Chinese).

[18] [18] LI X J. Theoretical and experimental research on methods for performance improvement of BOTDR sensing system ［D］. Beijing: North China Electric Power University, 2017: 59-60 (in Chinese).

[19] [19] TU X B. Distributed fiber sensing technique employing vector Bri-llouin optical time domain analyzer ［D］. Changsha: National University of Defense Technology, 2015: 36 (in Chinese).

[20] [20] CHEN B L. Optimized theory and its algorithm［M］.2nd ed. Beijing: Tsinghua University Press, 2005: 389-391 (in Chinese).