Research of the Ultra-Thin Fiber Bragg Grating Hydrophone

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In this paper, the basic theories and characteristics of distributed Bragg reflection (DBR) fiber laser and distributed feedback (DFB) fiber laser as hydrophone were described and analyzed; The interferometric demodulation technique of the underwater acoustic signals from fiber Bragg grating (FBG) hydrophone was discussed; And the theoretical experimental conclusions of the ultra-thin fiber Bragg grating hydrophone were introduced; Finally, the application in the torpedo homing field of the research on the ultra-thin fiber Bragg grating hydrophone were prospected.

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Periodical:

Edited by:

David Wang

Pages:

682-688

DOI:

10.4028/www.scientific.net/KEM.500.682

Citation:

J. B. Huang et al., "Research of the Ultra-Thin Fiber Bragg Grating Hydrophone", Key Engineering Materials, Vol. 500, pp. 682-688, 2012

Online since:

January 2012

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$35.00

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[8] Wang Mingzhou et al. The homing system of the torpedo with a towed linear array[J]. Torpedo Technology, 2000, 8(3): 32-36(in Chinese) Figure1. Configuration of a DBR fiber laser Figure2. Response profiles from cavity and reflectors of Bragg grating fiber laser Figure3. Configuration of a DFB fiber laser Figure4. FBGL sensor system with interferometric detection Figure5. Principle of underwater acoustic signal interrogation with FBGL hydrophone Figure6. Underwater acoustic signal of 3 KHz detected by the naked DBR fiber laser hydrophone Figure7. Underwater acoustic signal of 3 KHz detected by the silicone rubber encapsulated DBR fiber laser hydrophone Figure8. Underwater acoustic signal of 4 KHz detected by the naked DFB fiber laser hydrophone.

DOI: 10.1117/12.834235

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