DFB fiber laser hydrophone enhanced through polyurethane end surface pulling

Tang Bo; Junbin Huang; Hongcan Gu; Xin Mao

doi:10.1117/12.2242702

25 October 2016 DFB fiber laser hydrophone enhanced through polyurethane end surface pulling

Tang Bo, Junbin Huang, Hongcan Gu, Xin Mao

Proceedings Volume 9686, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices; 96860U (2016) https://doi.org/10.1117/12.2242702
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

A fiber laser hydrophone enhancing sensitivity through polyurethane end surface pulling is presented. After the relation between acoustic pressure sensitivity, dynamic performance and polyurethane material of the hydrophone are respectively described by theoretical model and ANSYS simulation, the polyurethane used for enhancing whose parameters are optimized is prepared. Prototypes of the hydrophone are fabricated and tested in vibration liquid column and Qiandao Lake experimental field. The average acoustic pressure sensitivity is -142.70dB(0dB=1rad/μPa)with the fluctuation less than ±2dB in the frequency range of 10~2000Hz. The result shows that DFB fiber laser encapsulated by polyurethane end surface ensures the high sensitivity, its fluctuation used in underwater sound detection is restrained at the same time, which is of great significance to promote the engineering application of fiber laser hydrophone.

Citation Download Citation

Tang Bo, Junbin Huang, Hongcan Gu, and Xin Mao "DFB fiber laser hydrophone enhanced through polyurethane end surface pulling", Proc. SPIE 9686, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices, 96860U (25 October 2016); https://doi.org/10.1117/12.2242702

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