Measurement of Intense Ultrasound Field in Air Using Fiber Optic Probe
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概要
- 論文の詳細を見る
In this report, a method of measuring intense ultrasound field using a fiber optic probe is studied. We try to utilize the modulation of optical reflectivity at the end of the optical fiber through a change in the refractive index of air due to sound pressure. The theoretical sensitivity for air is studied and a setup for the measurement is described. Comparisons with a commercial probe-type condenser microphone are performed. The absolute value of sound pressure estimated theoretically almost agreed with the results obtained using a conventional microphone and showed good linearity. The validity of the method was proved using three measurement examples.
- 2007-07-30
著者
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HASEGAWA Takeshi
Precision and Intelligence Laboratory, Tokyo Institute of Technology
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Ueha Sadayuki
Precision And Intelligence Lab. Tokyo Inst. Of Technol.
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Nakamura Kentaro
Precision And Intelligence Lab. Tokyo Inst. Of Technol.
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Ueha Sadayuki
Precision and Intelligence Laboratory, Tokyo Institute of Technology, R2-25, 4259 Nagatsutacho, Midori-ku, Yokohama 226-8503, Japan
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Takei Hiroyuki
Precision and Intelligence Laboratory, Tokyo Institute of Technology, R2-25, 4259 Nagatsutacho, Midori-ku, Yokohama 226-8503, Japan
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Hasegawa Takeshi
Precision and Intelligence Laboratory, Tokyo Institute of Technology, R2-25, 4259 Nagatsutacho, Midori-ku, Yokohama 226-8503, Japan
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