Author(s)

Siyu Xu, Hui Huang, and Jianwei Zhang

Corresponding Author

Siyu Xu

ABSTRACT

A broadband-response fiber-optic hydrophone based on Au-coated stainless steel diaphragm and an encoded narrowband filtering function based on the Fourier transform and matrix multiplication are demonstrated. Sensitivity of 0.13mV⁄Pa, 0.19mV⁄Pa, 0.11mV⁄Pa and 0.17mV⁄Pa can be achieved at 8 KHz, 25 KHz, 200 KHz and 1 MHz, respectively. The advantages of simple fabrication, broadband-response, low-cost, and linear response make our fiber-optic hydrophone a perfect candidate for enormous economical manufacturing.

KEYWORDS

fiber-optic hydrophone, broadband-response, filtering function