Fiber Laser Based Hydrophone Systems

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 desi...

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Veröffentlicht in:	Photonic sensors (Berlin) 2011-09, Vol.1 (3), p.210-221
Hauptverfasser:	Azmi, Asrul Izam, Leung, Ian, Chen, Xiaobao, Zhou, Shaoling, Zhu, Qing, Gao, Kan, Childs, Paul, Peng, Gangding
Format:	Artikel
Sprache:	eng
Schlagworte:	Lasers Measurement Science and Instrumentation Microwaves Optical Devices Optics Photonics Physics Physics and Astronomy Regular RF and Optical Engineering 传感器光学传感器结构自动化技术设计
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Beschreibung
Zusammenfassung:	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·uPa-Hz-0.5 at 1 kHz or a minimum detectable acoustic pressure below 800 uPa during field test is attained. We have also investigated an intensity-type DFB fiber laser hydrophone system and its performance.
ISSN:	1674-9251 2190-7439
DOI:	10.1007/s13320-011-0018-3