Planar-Conformal Fiber Optic Acoustic Sensing Elements

N. Lagakos; J. A. Bucaro; P. Ehrenfeuchter; T. R. Hickman; A. B. Tveten; A. Dandridge

doi:10.1117/12.963122

5 February 1990 Planar-Conformal Fiber Optic Acoustic Sensing Elements

N. Lagakos, J. A. Bucaro, P. Ehrenfeuchter, T. R. Hickman, A. B. Tveten, A. Dandridge

Proceedings Volume 1170, Fiber Optic Smart Structures and Skins II; (1990) https://doi.org/10.1117/12.963122
Event: OE/FIBERS '89, 1989, Boston, United States

Abstract

A planar flexible fiber-optic interferometric acoustic sensor has been developed by wrapping optimized single-mode fibers in a planar spiral form and then embedding the fiber in a thin polyurethane layer. The acoustic response of the element was studied and it was found to be high and frequency independent. The acoustic response was then interpreted in light of calculations based upon an approximation to the sensing structure, normally one in which the polyurethane layer is placed concentrically over the sensing fiber. Excellent agreement was found between experiment and analysis. The acceleration response of the element was also studied. The planar fiber acoustic sensor was compared to a PVF2 sensor of similar geometry. It was found that in an acceleration controlled environment the fiber sensor acoustic performance compared favorably to that of the PVF2.

Citation Download Citation

N. Lagakos, J. A. Bucaro, P. Ehrenfeuchter, T. R. Hickman, A. B. Tveten, and A. Dandridge "Planar-Conformal Fiber Optic Acoustic Sensing Elements", Proc. SPIE 1170, Fiber Optic Smart Structures and Skins II, (5 February 1990); https://doi.org/10.1117/12.963122

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