Measurement of intense ultrasound field in air using fiber optic probe

被引：22

作者：

Takei, Hiroyuki ^{[1
]}

Hasegawa, Takeshi ^{[1
]}

Nakamura, Kentaro ^{[1
]}

Ueha, Sadayuki ^{[1
]}

机构：

[1] Tokyo Inst Technol, Precis & Intelligence Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2007年 / 46卷 / 7B期

关键词：

fiber optic probe; intense ultrasound field; sound pressure sensor; optical fiber; acoustooptic effect;

D O I：

10.1143/JJAP.46.4555

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：4555 / 4557

页数：3

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