[1] 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).

[2] Kumar S S, Khansa C A, Praveen T V et al. Assessment of dynamic range in interferometric fiber optic hydrophones based on homodyne PGC interrogator[J]. IEEE Sensors Journal, 20, 13418-13425(2020).

[3] Ni M, Hu Y M, Meng Z et al. Dynamic range of fiber optic hydrophone using digitized phase generated carrier[J]. Laser & Optoelectronics Progress, 42, 33-37(2005).

[4] Wang Q, Lyu W M, Cheng Z et al. Noninvasive measurement of vital signs with the optical fiber sensor based on deep learning[J]. Journal of Lightwave Technology, 41, 4452-4462(2023).

[5] Lenner M, Frank A, Yang L et al. Long-term reliability of fiber-optic current sensors[J]. IEEE Sensors Journal, 20, 823-832(2020).

[6] 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).

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

[8] 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).

[9] Huang Y, Zhao Z L, Cai B T et al. Phase demodulation algorithm based on multi-harmonic mixing and nonlinear curve fitting[J]. Acta Optica Sinica, 44, 2106002(2024).

[10] Li Y, Gao H, Zhao L G et al. Improved PGC demodulation algorithm to eliminate modulation depth and intensity disturbance[J]. Applied Optics, 61, 5722-5727(2022).

[11] Jiang Y, Chen S F. Direct demodulation for signal from fiber grating sensors by interferometer based on 3×3 coupler[J]. Acta Optica Sinica, 24, 1487-1490(2004).

[12] Pan W, Feng X J, Liu X Y et al. Micro-displacement measurement system based on optical fiber Mach-Zehnder interferometry[J]. Laser & Optoelectronics Progress, 62, 0312008(2025).

[13] Wang L, He J, Li F et al. Ultra low frequency phase generated carrier demodulation technique for fiber sensors[J]. Chinese Journal of Lasers, 38, 0405001(2011).

[14] Lin G H, Ma J, Li M et al. Large dynamic range in acoustic detection realized by a dual-diaphragm based sensing system with IQ-PGC phase demodulation[J]. IEEE Sensors Journal, 22, 8996-9004(2022).

[15] Shi Q P, Zhang H Y, Wang L W et al. A new phase generated carrier demodulation method based on fixed phase delay[J]. Chinese Journal of Lasers, 38, 0805002(2011).

[16] Chen B Y, Jiang J C, Lou Y T et al. Active linearized PGC demodulation with fusion of PGC-Arctan and PGC-DCM schemes for nonlinear error elimination in SPM interferometer[J]. Optics Express, 30, 22999-23010(2022).

[17] Wang K, Zhang M, Duan F J et al. Measurement of the phase shift between intensity and frequency modulations within DFB-LD and its influences on PGC demodulation in a fiber-optic sensor system[J]. Applied Optics, 52, 7194-7199(2013).

[18] Huang C, Cai H W, Geng J X et al. Wavelength interrogation based on a Mach-Zehnder interferometer with a 3×3 fiber coupler for fiber Bragg grating sensors[J]. Chinese Journal of Lasers, 32, 1397-1400(2005).

[19] Liu T T, Cui J, Chen D S et al. A new demodulation technique for optical fiber interferometric sensors with [3×3] directional couplers[J]. Chinese Optics Letters, 6, 12-15(2008).

[20] Liu F, Xie S R, Qiu X K et al. Efficient common-mode noise suppression for fiber-optic interferometric sensor using heterodyne demodulation[J]. Journal of Lightwave Technology, 34, 5453-5461(2016).

[21] Ke Z L, Huang W T. Frequency shift quadrature demodulation method for interferometric fiber-optic hydrophone[J]. Optical Fiber & Electric Cable and Their Applications, 1-5(2022).

[22] Wang Y L, He F, Hou Z H et al. Displacement monitoring for radiotherapy patients using in vitro markers[J]. Laser & Optoelectronics Progress, 60, 0217004(2023).

[23] Higham N J. Cholesky factorization[J]. Wiley Interdisciplinary Reviews: Computational Statistics, 1, 251-254(2009).

[24] Thompson B J, Wolf E. Two-beam interference with partially coherent light[J]. Journal of the Optical Society of America, 47, 895-902(1957).