Calibration of fiber optic hydrophone based on heterodyne demodulation technology

Wenjing Li; Yi Chen; Jun Zhang

doi:10.1117/12.2645770

15 August 2022 Calibration of fiber optic hydrophone based on heterodyne demodulation technology

Wenjing Li, Yi Chen, Jun Zhang

Proceedings Volume 12308, International Conference on Optoelectronic Information and Computer Engineering (OICE 2022); 1230807 (2022) https://doi.org/10.1117/12.2645770
Event: International Conference on Optoelectronic Information and Computer Engineering (OICE2022), 2022, ONLINE, China

Abstract

In order to realize the automatic calibration of fiber optic hydrophone with wide frequency, the principle of heterodyne method is studied in this paper. And combined with the standing wave field and free field calibration methods, a fiber optic hydrophone phase-shifted sensitivity calibration device is developed, which realizes the accurate calibration of the fiber optic hydrophone in the frequency range of 20 Hz to 50 kHz. The measurement uncertainty of the calibration device is 1.5 dB (k = 2).

Citation Download Citation

Wenjing Li, Yi Chen, and Jun Zhang "Calibration of fiber optic hydrophone based on heterodyne demodulation technology", Proc. SPIE 12308, International Conference on Optoelectronic Information and Computer Engineering (OICE 2022), 1230807 (15 August 2022); https://doi.org/10.1117/12.2645770

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