Multipoint detection of acoustic wave in water with WDM fiber-Bragg-grating sensor

被引：8

作者：

Takahashi, N ^{[1
]}

Tetsumura, K ^{[1
]}

Takahashi, S ^{[1
]}

机构：

[1] Natl Def Acad Japan, Yokosuka, Kanagawa 2398686, Japan

来源：

OPTICAL ENGINEERING FOR SENSING AND NANOTECHNOLOGY (ICOSN'99) | 1999年 / 3740卷

关键词：

optical fiber sensor; fiber Bragg grating; acoustic sensor; photoelasticity; directivity; WDM;

D O I：

10.1117/12.347815

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Using two fiber Bragg gratings (FBG) in serial connection and WDM technique, multipoint detection of an acoustic field in water is demonstrated after having measured the spatial resolving power of an FBG underwater acoustic sensor. An acoustic sensor with a 24 mm long FBG is found to have the spatial resolution on the order of 1 mm. Two FBGs in the WDM sensor work independently without interfering each other and the sensor provides us with real-time detection of the amplitudes and phases of the acoustic field at different points in water.

引用

页码：270 / 273

页数：4

共 4 条

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