Fiber Laser Based Hydrophone Systems

Asrul Izam AZMI; Ian LEUNG; Xiaobao CHEN; Shaoling ZHOU; Qing ZHU; Kan GAO; Paul CHILDS; Gangding PENG

doi:10.1007/s13320-011-0018-3

Journals >Photonic Sensors >Volume 1 >Issue 3 >Page 210 > Article

Photonic Sensors
Vol. 1, Issue 3, 210 (2011)

Asrul Izam AZMI¹, Ian LEUNG¹, Xiaobao CHEN², Shaoling ZHOU²..., Qing ZHU², Kan GAO², Paul CHILDS³ and Gangding PENG^1,*|Show fewer author(s)

Author Affiliations

¹School of Electrical Engineering and Telecommunications, The University of New South Wales, NSW, 2052, Australia

²23rd Research Institute, China Electronic Technology Group Corporation, Shanghai, 200437, China

³Department of Electronics, Tsinghua University, Beijing, 100084, China

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DOI: 10.1007/s13320-011-0018-3 Cite this Article

Asrul Izam AZMI, Ian LEUNG, Xiaobao CHEN, Shaoling ZHOU, Qing ZHU, Kan GAO, Paul CHILDS, Gangding PENG. Fiber Laser Based Hydrophone Systems[J]. Photonic Sensors, 2011, 1(3): 210 Copy Citation Text

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Abstract

We report our recent work on distributed feedback fiber laser based hydrophones. Some issues related to sensitivity, such as fiber laser phase condition, demodulation, and packaging, are also discussed. With the development of appropriate digital signal processing (DSP) techniques and packaging designs, an interferometric-type distributed feedback (DFB) fiber laser hydrophone system with acoustic sensitivity of 58.0 dB·re·μPa·Hz-0.5 at 1 kHz or a minimum detectable acoustic pressure below 800 μPa during field test is attained. We have also investigated an intensity-type DFB fiber laser hydrophone system and its performance.

Keywords

acoustic sensitivity Fiber laser hydrophone interferometric

Asrul Izam AZMI, Ian LEUNG, Xiaobao CHEN, Shaoling ZHOU, Qing ZHU, Kan GAO, Paul CHILDS, Gangding PENG. Fiber Laser Based Hydrophone Systems[J]. Photonic Sensors, 2011, 1(3): 210

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