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arXiv · 2112.08944

Fiber-optic vector acoustic receiver based on adaptive holographic interferometer

Roman V. Romashko·Dmitrii V. Storozhenko·Mikhail N. Bezruk·Denis A. Bobruyko·Yuri N. Kulchin
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Abstract

A mobile scalar-vector acoustic receiver is proposed, experimentally implemented and investigated. The key components of the receiver are (i) the six-channel fiber-optic coil-type sensor configured as to detect three projections of acoustic intensity vector, (ii) the six-channel optical phase demodulator based on six-channel adaptive holographic interferometer configured with use of dynamic holograms multiplexed in a photorefractive crystal of cadmium telluride and (iii) the signals recording ADC-based system combined with software package for data processing. Field tests of the developed receiver applied for obtaining scalar and vector parameters of acoustic waves generated by a stationary and moving acoustic source in open air and water area are carried out. Experimental results show perceptiveness of use of the fiber-optical adaptive interferometry system for bearing of weak acoustic sources in real conditions.

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Roman V. Romashko, Dmitrii V. Storozhenko, Mikhail N. Bezruk, Denis A. Bobruyko, Yuri N. Kulchin. 2021-12-15. Fiber-optic vector acoustic receiver based on adaptive holographic interferometer. https://doi.org/10.1088/1555-6611%2Fac44a4

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