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

Bo Shen; Yuji Wada; Daisuke Koyama; Ryoichi Isago; Yosuke Mizuno; Kentaro Nakamura

doi:10.1117/12.884961

19 May 2011 Fiber-optic ultrasonic probe based on refractive-index modulation in water

Bo Shen, Yuji Wada, Daisuke Koyama, Ryoichi Isago, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77539W (2011) https://doi.org/10.1117/12.884961
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

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.

Citation Download Citation

Bo Shen, Yuji Wada, Daisuke Koyama, Ryoichi Isago, Yosuke Mizuno, and Kentaro Nakamura "Fiber-optic ultrasonic probe based on refractive-index modulation in water", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539W (19 May 2011); https://doi.org/10.1117/12.884961

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