Photonic Sensors

, Volume 7, Issue 3, pp 253–260 | Cite as

Development of high sensitivity eight-element multiplexed fiber laser acoustic pressure hydrophone array and interrogation system

  • Ming Li
  • Zhihui Sun
  • Xiaolei Zhang
  • Shujuan Li
  • Zhiqiang Song
  • Meng Wang
  • Jian Guo
  • Jiasheng Ni
  • Chang Wang
  • Gangding Peng
  • Xiangang Xu
Open Access
Regular
  • 316 Downloads

Abstract

Fiber laser hydrophones have got widespread concerns due to the unique advantages and broad application prospects. In this paper, the research results of the eight-element multiplexed fiber laser acoustic pressure array and the interrogation system are introduced, containing low-noise distributed feedback fiber laser (DFB-FL) fabrication, sensitivity enhancement packaging, and interferometric signal demodulation. The frequency response range of the system is 10Hz–10kHz, the laser frequency acoustic pressure sensitivity reaches 115 dB re Hz/Pa, and the equivalent noise acoustic pressure is less than 60μPa/Hz1/2. The dynamic range of the system is greater than 120 dB.

Keywords

Fiber laser hydrophone DFB-FL packaging sensitization eight-element multiplex interferometric demodulation 

Notes

Acknowledgment

This work was financially supported by the National Natural Science Foundation of China (No. 60317101), Key Research and Development Plan of Shandong Province (No. 2015GSF11500), and Natural Science Foundation of Shandong Province (No. ZR2013FL029).

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Copyright information

© The Author(s) 2016

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Ming Li
    • 1
    • 2
  • Zhihui Sun
    • 2
  • Xiaolei Zhang
    • 2
  • Shujuan Li
    • 2
  • Zhiqiang Song
    • 2
  • Meng Wang
    • 2
  • Jian Guo
    • 2
  • Jiasheng Ni
    • 2
  • Chang Wang
    • 2
  • Gangding Peng
    • 3
  • Xiangang Xu
    • 1
  1. 1.State Key Laboratory of Crystal MaterialsShandong UniversityJinanChina
  2. 2.Jinan Research CenterLaser Institute of Shandong Academy of SciencesJinanChina
  3. 3.School of Electronic Engineering and TelecommunicationUniversity of New South WalesSydneyAustralia

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