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Proceedings Paper

Fiber-optic ultrasonic probe based on refractive-index modulation in water
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Paper Abstract

We report on the measurement of sound pressure in water utilizing the modulation of the optical reflectivity at the end of an optical fiber. First, we develop a new experimental setup comprising a low-coherent light source to suppress the interference noise. Then, we formulate the relation between the sound pressure and the modulation in the reflected light intensity, and theoretically analyze the performance of this method with emphasis on the directivity and the sensitivity.

Paper Details

Date Published: 19 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539W (19 May 2011); doi: 10.1117/12.884961
Show Author Affiliations
Bo Shen, Tokyo Institute of Technology (Japan)
Yuji Wada, Tokyo Institute of Technology (Japan)
Daisuke Koyama, Tokyo Institute of Technology (Japan)
Ryoichi Isago, Tokyo Institute of Technology (Japan)
Yosuke Mizuno, Tokyo Institute of Technology (Japan)
Kentaro Nakamura, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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