[1] Hu Y L. Heterodyne detection technique for optical fiber sensors[J]. Journal of Geomatics, 15, 43-49(1990).
[2] Wu D, Zhu R H, Chen L et al. Heterodyne measurement and adaptive control for environmental micro-vibration in phase-shifting interferometer[J]. Acta Photonica Sinica, 33, 1493-1496(2004).
[3] 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).
[4] Song M P, Zhuang S W, Wang Y X. High-frequency vibration detection of phase-sensitive optical time-domain reflectometer[J]. Chinese Journal of Lasers, 47, 0506001(2020).
[6] Wang M, Yang P, He L B et al. Design of zero-crossing demodulation system for measurement of underwater acoustic pressure by optical method[J]. Acta Metrologica Sinica, 40, 315-318(2019).
[7] Zhang N. Study on several key technologies of interferometric fiber optic hydrophone array system based on heterodyne detection scheme[D], 13-21(2013).
[8] Zhang S J, Wang M K, Zhang Y L et al. Self-calibrated high-frequency analysis of high-speed optoelectronic devices by frequency-shifted heterodyne[J]. Journal of Applied Sciences, 38, 630-639(2020).
[12] Li Y, Xiangli B, Zhang W X et al. Detection of double acousto-optical modulators difference frequency based on spectrum correction[J]. Laser & Optoelectronics Progress, 52, 051205(2015).
[13] Zhao Y, Zhou T, Li D C. Influence of characteristics of an AOM on the measurement accuracy of a heterodyne interferometer[J]. Acta Optica Sinica, 19, 1368-1374(1999).
[14] Yang M, Cai C G, Wang Y. Review of acquisition and demodulation method of heterodyne interferometer signal[J]. Laser Magazine, 39, 20-24(2018).
[15] Zhang X D, Cui X W, Wang X Q[M]. Digital signal analysis and processing(2014).