Direct monitoring of underwater ultrasonic transducers in the near field using fibre bragg grating sensors

Flockhart, G. M.H. and Mcguire, M. and Pierce, S.G. and Thursby, G. and Stewart, G. and Hayward, G. and Culshaw, B. (2009) Direct monitoring of underwater ultrasonic transducers in the near field using fibre bragg grating sensors. Proceedings of SPIE: The International Society for Optical Engineering, 7503. p. 750331. (http://dx.doi.org/10.1117/12.835468)

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Abstract

The interaction of fibre Bragg grating sensors with ultrasonic acoustic waves in water is investigated in the near field region of a 1-3 piezocomposite transducer. Longitudinal and transverse strain coupling is studied using two different grating designs and high fidelity measurement of the emitted field was demonstrated.