[1] Yang Y. Research on key technologies of distributed optical fiber hydrophone system[D](2018).

[2] Wu S, Huang J B, Liu W et al. Anti-noise UWFBG hydrophone array enhanced DAS system using optimising SVMD based on matched interferometric[J]. Optical Fiber Technology, 88, 104051(2024).

[3] Kilfoyle D B, Baggeroer A B. The state of the art in underwater acoustic telemetry[J]. IEEE Journal of Oceanic Engineering, 25, 4-27(2000).

[4] Yang Y. Research and development of ultra-low-frequency fiber optic hydrophone[D](2022).

[5] Gui C Y. Noise measurement conical vector array formation and constant beamwidth[D](2022).

[6] Sun H L. Study on noise characteristics and submarine parameter inversion methods in typical area of the South China Sea[D](2024).

[7] Saheban H, Kordrostami Z. Hydrophones, fundamental features, design considerations, and various structures: a review[J]. Sensors and Actuators A: Physical, 329, 112790(2021).

[8] Gorshkov B G, Yüksel K, Fotiadi A A et al. Scientific applications of distributed acoustic sensing: state-of-the-art review and perspective[J]. Sensors, 22, 1033(2022).

[9] Zhou C M, Pang Y D, Qian L et al. Demodulation of a hydroacoustic sensor array of fiber interferometers based on ultra-weak fiber Bragg grating reflectors using a self-referencing signal[J]. Journal of Lightwave Technology, 37, 2568-2576(2019).

[10] Yang Y, Luo Z C, Wang Z M et al. High-performance fiber optic interferometric hydrophone based on push–pull structure[J]. IEEE Transactions on Instrumentation and Measurement, 70, 9511313(2021).

[11] Meng Z, Chen W, Wang J F et al. Recent progress in fiber-optic hydrophones[J]. Photonic Sensors, 11, 109-122(2021).

[12] Antony T, Madhusoodanan K N, Kumar K R. Design optimization of an optical fiber air-backed concentric hybrid mandrel hydrophone by an iterative design and finite element analysis for submarine passive array applications[J]. Optical Fiber Technology, 78, 103325(2023).

[13] Wang W R, Pei Y Y, Ye L Y et al. High-sensitivity cuboid interferometric fiber-optic hydrophone based on planar rectangular film sensing[J]. Sensors, 20, 6422(2020).

[14] Dass S, Jha R. Underwater low acoustic frequency detection based on in-line Mach–Zehnder interferometer[J]. Journal of the Optical Society of America B, 38, 570-575(2021).

[15] Jiang T F, Ba D X, Dong Y K. Online distributed strain measurement of fiber Michelson hydrophones based on DPP-BOTDA with a pulsed-probe wave[J]. Optics Express, 27, 22375-22384(2019).

[16] Zhang W T, Liu Y L, Li F. An optimized design of a fiber optic hydrophone based on a flat diaphragm and multilayer fiber coils: a theoretical approach[J]. Measurement, 42, 171-174(2009).

[17] Tian J Z. Sagnac optical fiber hydrophone sensitization technology research[D](2015).

[18] Wang W D. Research on key technology of fiber grating hydrophone array based on matched interference[D](2019).

[19] Wang Z Y, Liu Y F, Chen Y C et al. Research and application progress of distributed fiber optic hydrophone technology[J]. Acta Optica Sinica, 44, 0106004(2024).

[20] Cole J H, Bucaro J A, Kirkendall C K et al. The origin, history and future of fiber-optic interferometric acoustic sensors for US Navy applications[C], 7753, 47-50(2011).

[21] Hoffman C, Giallorenzi T G, Slater L B. Optics research at the US naval research laboratory[J]. Applied Optics, 54, F268-F285(2015).

[22] Wang C, Shang Y, Liu X H et al. Distributed OTDR-interferometric sensing network with identical ultra-weak fiber Bragg gratings[J]. Optics Express, 23, 29038-29046(2015).

[23] Timoshenko S[M]. History of strength of materials: with a brief account of the history of theory of elasticity and theory of structures(1983).

[24] Miah K, Potter D. A review of hybrid fiber-optic distributed simultaneous vibration and temperature sensing technology and its geophysical applications[J]. Sensors, 17, 2511(2017).

[25] Waagaard O H, Havsgard G B, Wang G. An investigation of the pressure-to-acceleration responsivity ratio of fiber-optic mandrel hydrophones[J]. Journal of Lightwave Technology, 19, 994-1003(2001).

[26] Li Z Y, Wang C J, Gui X et al. A high-performance fiber-optic hydrophone for large scale arrays[J]. Journal of Lightwave Technology, 41, 4201-4210(2023).

[27] Shang Y, Yang Y H, Wang C et al. Study on demodulated signal distribution and acoustic pressure phase sensitivity of a self-interfered distributed acoustic sensing system[J]. Measurement Science and Technology, 27, 065201(2016).

[28] Liu X H, Wang C, Shang Y et al. Distributed acoustic sensing with Michelson interferometer demodulation[J]. Photonic Sensors, 7, 193-198(2017).

[29] Lu B, Wu B Y, Gu J F et al. Distributed optical fiber hydrophone based on Φ-OTDR and its field test[J]. Optics Express, 29, 3147-3162(2021).

[30] Liu Y F, Li C, Chen Y C et al. Voiceprint and position information detection of non-cooperative ship with Φ-OTDR and suspended sensitized optical cable[J]. Optics Express, 32, 17362-17372(2024).

[31] Yan G F, Wang D L, Long J Q et al. High-performance towing cable hydrophone array with an improved ultra-sensitive fiber-optic distributed acoustic sensing system[J]. Optics Express, 31, 25545-25556(2023).

[32] Long J Q, Jiang L, Xiao C et al. Large-scale distributed fiber-optic hydrophone towing array and lake trial performance test[J]. Acta Optica Sinica, 44, 0106019(2024).

[33] He T, Ran Y L, Liu T et al. Distributed temperature/vibration fiber optic sensor with high precision and wide bandwidth[J]. IEEE Photonics Journal, 11, 7104811(2019).

[34] Chen J F, Li H, Liu T et al. Fully distributed hydroacoustic sensing based on lightweight optical cable assisted with scattering enhanced fiber[C], W7C.3(2021).

[35] Chen J F, Li H, Xiao X P et al. Fully distributed hydroacoustic sensing based on ultra-highly sensitive and lightweight fiber-optic hydrophone cable[J]. Optics and Lasers in Engineering, 169, 107734(2023).

[36] Zhu S L, Chen J F, Ai K et al. Fully distributed fiber-optic hydrophone cable for acoustic source azimuth estimation[C], 1-5(2024).

[37] Shang Y, Yang Y H, Wang C et al. Quasi-distributed acoustic sensing based on identical low-reflective fiber Bragg gratings[J]. Measurement Science and Technology, 28, 015202(2017).

[38] Okawara C, Saijyou K. Fiber optic interferometric hydrophone using fiber Bragg grating with time division multiplexing[J]. Acoustical Science and Technology, 28, 39-42(2007).

[39] Okawara C, Saijyou K. Fiber optic interferometric hydrophone using fiber Bragg grating with wavelength division multiplexing[J]. Acoustical Science and Technology, 29, 232-234(2008).

[40] Yang W. Research and implementation of on-line quality monitoring system for large-scale weak fiber Bragg grating array[D](2019).

[41] Bian Y J, Hu Q H, Ma L N et al. Analysis on Rayleigh parasitic interference noise of the leading fiber in interferometric fiber grating hydrophone[J]. Chinese Journal of Lasers, 51, 2306004(2024).

[42] Guo Z, Gao K, Yang H et al. 20-mm-diameter interferometric hydrophone towed array based on fiber Bragg gratings[J]. Acta Optica Sinica, 39, 1106003(2019).

[43] Luo Z H, Ding S, Tan C et al. Low-frequency fiber optic hydrophone based on ultra-weak fiber Bragg grating[J]. IEEE Sensors Journal, 23, 11635-11641(2023).

[44] Lavrov V S, Plotnikov M Y, Aksarin S M et al. Experimental investigation of the thin fiber-optic hydrophone array based on fiber Bragg gratings[J]. Optical Fiber Technology, 34, 47-51(2017).

[45] Wang Z, Wang C J, Li Z Y et al. Thin cable fiber hydrophones for large-scale arrays[J]. Proceedings of SPIE, 13183, 1318310(2024).

[46] Wu S, Huang J B, Pang Y D et al. Direction-finding study of a 1.7 mm diameter towed hydrophone array based on UWFBG[J]. Sensors, 24, 4300(2024).

[47] Masoudi A, Newson T P. Contributed review: distributed optical fibre dynamic strain sensing[J]. Review of Scientific Instruments, 87, 011501(2016).

[48] Li C L, Tang J G, Cheng C et al. FBG arrays for quasi-distributed sensing: a review[J]. Photonic Sensors, 11, 91-108(2021).

[49] He H, Shao L Y, Luo B et al. Multiple vibrations measurement using phase-sensitive OTDR merged with Mach-Zehnder interferometer based on frequency division multiplexing[J]. Optics express, 24, 4842-4855(2016).

[50] Li C L, Mei Z H, Cheng C C et al. Draw tower grating-based distributed acoustic sensing system and its applications[C], 1-3(2019).

[51] Becker M W, Ciervo C, Cole M et al. Fracture hydromechanical response measured by fiber optic distributed acoustic sensing at millihertz frequencies[J]. Geophysical Research Letters, 44, 7295-7302(2017).

[52] Yuan Q, Wang F, Liu T et al. Using an auxiliary Mach-Zehnder interferometer to compensate for the influence of laser-frequency-drift in Φ-OTDR[J]. IEEE Photonics Journal, 11, 7100209(2019).

[53] Zuo J C, Zhang Y, Xu H X et al. Pipeline leak detection technology based on distributed optical fiber acoustic sensing system[J]. IEEE Access, 8, 30789-30796(2020).

[54] Yang G Y, Fan X Y, Wang S et al. Long-range distributed vibration sensing based on phase extraction from phase-sensitive OTDR[J]. IEEE Photonics Journal, 8, 6802412(2016).

[55] Yuan Q, Wang F, Liu T et al. Compensating for influence of laser-frequency-drift in phase-sensitive OTDR with twice differential method[J]. Optics Express, 27, 3664(2019).

[56] Fernández-Ruiz M R, Costa L, Martins H F. Distributed acoustic sensing using chirped-pulse phase-sensitive OTDR technology[J]. Sensors, 19, 4368(2019).

[57] Loranger S, Gagné M, Lambin-Iezzi V et al. Rayleigh scatter based order of magnitude increase in distributed temperature and strain sensing by simple UV exposure of optical fibre[J]. Scientific Reports, 5, 11177(2015).

[58] Alekseev A E, Vdovenko V S, Gorshkov B G et al. Fading reduction in a phase optical time-domain reflectometer with multimode sensitive fiber[J]. Laser Physics, 26, 095101(2016).

[59] Hicke K, Eisermann R, Chruscicki S. Enhanced distributed fiber optic vibration sensing and simultaneous temperature gradient sensing using traditional C-OTDR and structured fiber with scattering dots[J]. Sensors, 19, 4114(2019).

[60] Li H, Sun Q Z, Liu T et al. Ultra-high sensitive quasi-distributed acoustic sensor based on coherent OTDR and cylindrical transducer[J]. Journal of Lightwave Technology, 38, 929-938(2020).

[61] Mei Z H, Tang J G, Li C L et al. Distributed vibration and temperature measurement for oil well based on continuous fiber Bragg grating array[M]. Lin J E, 1965-1973(2019).

[62] Li C L, Tang J G, Jiang Y S et al. An enhanced distributed acoustic sensor with large temperature tolerance based on ultra-weak fiber Bragg grating array[J]. IEEE Photonics Journal, 12, 7202211(2020).

[63] Wang C, Shang Y, Zhao W A et al. Distributed acoustic sensor using broadband weak FBG array for large temperature tolerance[J]. IEEE Sensors Journal, 18, 2796-2800(2018).

[64] Zhang X P, Sun Z H, Shan Y Y et al. A high performance distributed optical fiber sensor based on Φ‍-OTDR for dynamic strain measurement[J]. IEEE Photonics Journal, 9, 6802412(2017).

[65] Pan Z Q, Liang K Z, Zhou J et al. Interference-fading-free phase-demodulated OTDR system[J]. Proceedings of SPIE, 8421, 842129(2012).

[66] Wang X, Lu B, Wang Z Y et al. Interference-fading-free Φ-OTDR based on differential phase shift pulsing technology[J]. IEEE Photonics Technology Letters, 31, 39-42(2019).

[67] Zabihi M, Chen Y S, Zhou T et al. Continuous fading suppression method for Φ-OTDR systems using optimum tracking over multiple probe frequencies[J]. Journal of Lightwave Technology, 37, 3602-3610(2019).

[68] Wu Y, Wang Z N, Xiong J et al. Bipolar-coding Φ-OTDR with interference fading elimination and frequency drift compensation[J]. Journal of Lightwave Technology, 38, 6121-6128(2020).

[69] Qin Z G, Zhu T, Chen L et al. High sensitivity distributed vibration sensor based on polarization-maintaining configurations of phase-OTDR[J]. IEEE Photonics Technology Letters, 23, 1091-1093(2011).

[70] Ren M Q, Lu P, Chen L et al. Theoretical and experimental analysis of Φ-OTDR based on polarization diversity detection[J]. IEEE Photonics Technology Letters, 28, 697-700(2016).

[71] Wang F, Liu Y, Wei T et al. Polarization fading elimination for ultra-weak FBG array-based Φ-OTDR using a composite double probe pulse approach[J]. Optics Express, 27, 20468-20478(2019).

[72] Wang X F, Zhao C, Wu H et al. Fading-free polarization-sensitive optical fiber sensing[J]. Optics Express, 28, 37334-37342(2020).

[73] Fu X L, Deng Z Y, Wei Q et al. Polarization fading suppression in distributed interferometric sensing by matched interference between polarization-switched pulses[J]. Optics Express, 30, 19705-19715(2022).

[74] Alekseev A E, Tezadov Y A, Potapov V T. Intensity noise limit in a phase-sensitive optical time-domain reflectometer with a semiconductor laser source[J]. Laser Physics, 27, 055101(2017).

[75] 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[J]. IEEE Photonics Journal, 8, 6800210(2016).

[76] Loayssa A, Sagues M, Eyal A. Phase noise effects on phase-sensitive OTDR sensors using optical pulse compression[J]. Journal of Lightwave Technology, 40, 2561-2569(2022).

[77] Ma H Y, Wang X X, Ma F et al. Research progress of Φ-OTDR distributed optical fiber acoustic sensor[J]. Laser & Optoelectronics Progress, 57, 130005(2020).

[78] Li J, Zhang Z T, Gan J L et al. Influence of laser linewidth on phase-OTDR system based on heterodyne detection[J]. Journal of Lightwave Technology, 37, 2641-2647(2019).

[79] Liang K Z, Pan Z Q, Zhou J et al. Multi-parameter vibration detection system based on phase sensitive optical time domain reflectometer[J]. Chinese Journal of Lasers, 39, 0805004(2012).

[80] Tu G J, Zhang X P, Zhang Y X et al. The development of an Φ-OTDR system for quantitative vibration measurement[J]. IEEE Photonics Technology Letters, 27, 1349-1352(2015).

[81] Zhu F, Zhang X P, Xia L et al. Active compensation method for light source frequency drifting in Φ-OTDR sensing system[J]. IEEE Photonics Technology Letters, 27, 2523-2526(2015).

[82] Liu T, Wang F, Zhang X P et al. Interrogation of ultra-weak FBG array using double-pulse and heterodyne detection[J]. IEEE Photonics Technology Letters, 30, 677-680(2018).

[83] Xiong J, Wang Z N, Wu Y et al. Single-shot COTDR using sub-chirped-pulse extraction algorithm for distributed strain sensing[J]. Journal of Lightwave Technology, 38, 2028-2036(2020).

[84] Tang J G, Wang G D, Lv W H et al. Distributed acoustic sensing system based on inserting-zero golay coding with ultra-weak fiber Bragg gratings[J]. IEEE Sensors Journal, 22, 15985-15990(2022).

[85] Zabihi M, Krebber K. Laser source frequency drift compensation in Φ-OTDR systems using multiple probe frequencies[J]. Optics Express, 30, 19990-19998(2022).

[86] Zhao M Y, Mao Y, Wang Z X et al. Laser frequency noise correction in LFM-based interferometric fiber-optic hydrophone array[J]. Optics Express, 31, 27482-27493(2023).

[87] Wu M S, Fan X Y, Liu Q W et al. Highly sensitive quasi-distributed fiber-optic acoustic sensing system by interrogating a weak reflector array[J]. Optics Letters, 43, 3594-3597(2018).

[88] Tang J G, Liu Y Z, Li C L et al. Distributed vibration sensing system with high signal-to-noise ratio based on ultra-weak fiber Bragg grating[J]. Acta Optica Sinica, 41, 1306014(2021).

[89] Wang C J, Gui X, Fu X L et al. CFBG enhanced distributed acoustic sensing covering millihertz to kilohertz band[J]. Optics & Laser Technology, 184, 112448(2025).

[90] Tang J G, Cai L B, Li C L et al. Distributed acoustic sensors with wide frequency response based on UWFBG array utilizing dual-pulse detection[J]. Optical Fiber Technology, 61, 102452(2021).

[91] Gui X, He S Q, Wang Y M et al. Anti-noise UWFBG-array enhanced DAS system using double-pulse-based time-domain adaptive delay interference[J]. Optics Letters, 48, 1814-1817(2023).

[92] Fu X L, Wu J, Li Z Y et al. Fiber-based large dynamic range vibration sensing with dual-wavelength phase unwrapping[J]. Journal of Lightwave Technology, 37, 6090-6096(2019).

[93] Fan C Z, Li H, He T et al. Large dynamic range optical fiber distributed acoustic sensing (DAS) with differential-unwrapping-integral algorithm[J]. Journal of Lightwave Technology, 39, 7274-7280(2021).

[94] Wu Y C, Cao Z H, Zhang S Q et al. Dynamic range enlargement of distributed acoustic sensing based on temporal differential and weighted-gauge approach[J]. Journal of Lightwave Technology, 40, 3038-3045(2022).

[95] Li Z Y, Wang C J, Fu X L et al. A phase unwrapping algorithm for high dynamic range distributed acoustic sensing with signal fidelity[J]. Measurement Science and Technology, 36, 035116(2025).

[96] Liang J J, Wang Z Y, Lu B et al. Distributed acoustic sensing for 2D and 3D acoustic source localization[J]. Optics Letters, 44, 1690-1693(2019).

[97] Li W M, Chen Y, Liang Y et al. Directivity dependence of a distributed fiber optic hydrophone on array structure[J]. Sensors, 22, 6297(2022).

[98] Muñoz F, Soto M A. Enhancing fibre-optic distributed acoustic sensing capabilities with blind near-field array signal processing[J]. Nature Communications, 13, 4019(2022).

[99] Cao W H, Cheng G L, Xing G X et al. Near-field target localisation based on the distributed acoustic sensing optical fibre in shallow water[J]. Optical Fiber Technology, 75, 103198(2023).

[100] Paap B, Vandeweijer V, van Wees J D et al. Leveraging distributed acoustic sensing for monitoring vessels using submarine fiber-optic cables[J]. Applied Ocean Research, 154, 104422(2025).