Model Analysis of Underwater Acoustic Sensing with Hollow-Core Photonic Bandgap Fiber

Abstract:

Recently, using hollow-core photonic bandgap fiber (HC-PBF) for underwater acoustic sensing has been tested experimentally. Besides its unique characteristics and advantages over conventional single mode fiber (SMF), it provides higher responsivity to acoustic pressure. A robust deep water ray tracing model for multipath acoustic signals propagation and the elastic model of HC-PBF are both required to study the effects of underwater enviroment on the propagating acoustic signal for sensing with HC-PBF hydrophones. The combination of the two models allows studying the frequency response, sensitivity, detection range, and maximum operating depth of the HC-PBF hydrophones. The models analysis and simulations show the considerations that must be taken into account for the design and field operation of the HC-PBF hydrophones. In this paper, a complete package to study, design, optimize, and analyze the simulation results of the interferometric HC-PBF hydrophones is proposed.

• Periodical: Applied Mechanics and Materials (Volumes 568-570)
• Pages: 581-589
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.568-570.581
• Online since: June 2014
• Authors: Adel Abdallah*, Chao Zhu Zhang, Zhi Zhong
• Keywords: Acoustic Sensitivity, Depth Effect, HC-PBF Hydrophones, Hollow-Core Photonic Bandgap Fiber, Minimum Detectable Pressure, Underwater Acoustic Sensors

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