An optimized design of a fiber optic hydrophone based on side-hole packaged

Nuan Jiang; Hong Luo; Zhizhong Li; Huayong Yang; Yongming Hu

doi:10.1117/12.907081

22 November 2011 An optimized design of a fiber optic hydrophone based on side-hole packaged

Nuan Jiang, Hong Luo, Zhizhong Li, Huayong Yang, Yongming Hu

Proceedings Volume 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 81991F (2011) https://doi.org/10.1117/12.907081
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

Fiber Bragg grating hydrophones exhibit exceptional properties for acoustic detection, oil exploration and other applications have been induced widely attention following the maturity of fiber grating fabricate technology. As the basic key point of optical fiber hydrophone array, hydrophone design has been focused on by many countries over the past two decades. In this paper, we present a design of fiber Bragg hydrophone based on side-hole packaged to enhanced sensitivity and optimize its parameters through theoretical approach. In our theoretical analysis, the radial and axial strain induced grating length changes are taken into account. The results show that the material parameters such as Possion ratio and Young's modules and structural parameters like the position, diameter, ellipticity and number of the side-hole have significant effects on the sensitivity of the hydrophone. By optimizing these parameters, a high sensitivity can be achieved. This hydrophone is fabricated and experienced hydrostatic and dynamic sound pressure test. The experimental results are in good agreement with the theoretical results.

Citation Download Citation

Nuan Jiang, Hong Luo, Zhizhong Li, Huayong Yang, and Yongming Hu "An optimized design of a fiber optic hydrophone based on side-hole packaged", Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 81991F (22 November 2011); https://doi.org/10.1117/12.907081

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