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Proceedings Paper

Optical microphone based on Sagnac interferometer with polarization maintaining optical fibers
Author(s): Konrad Markowski; Jarosław Turkiewicz; Tomasz Osuch
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Paper Abstract

This paper describes possible use of Sagnac interferometer, based on the polarization maintaining fiber, as an optical microphone. Operation of investigated setup is based on the refractive index changes induced by acoustic wave and fiber strain. In the conducted experiment, Sagnac interferometer working as an optical microphone was able to achieve 6 dB bandwidth up to 4.5 kHz. Possibilities for linear operation was examined as well. Experimental results are preceded by a mathematical analysis of the operating principles.

Paper Details

Date Published: 25 October 2013
PDF: 7 pages
Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89030Q (25 October 2013); doi: 10.1117/12.2035415
Show Author Affiliations
Konrad Markowski, Warsaw Univ. of Technology (Poland)
Jarosław Turkiewicz, Warsaw Univ. of Technology (Poland)
Tomasz Osuch, Warsaw Univ. of Technology (Poland)
National Institute of Telecommunications (Poland)


Published in SPIE Proceedings Vol. 8903:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013
Ryszard S. Romaniuk, Editor(s)

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