Fiber Bragg Grating vibration sensor with DFB laser diode

被引：4

作者：

Siska, Petr ^{[1
]}

Brozovic, Martin ^{[1
]}

Cubik, Jakub ^{[1
]}

Kepak, Stanislav ^{[1
]}

Vitasek, Jan ^{[1
]}

Koudelka, Petr ^{[1
]}

Latal, Jan ^{[1
]}

Vasinek, Vladimir ^{[1
]}

机构：

[1] VSB Tech Univ Ostrava, Fac Elect Engn & Comp Sci, Dept Telecommun, Ostrava 70833, Czech Republic

来源：

18TH CZECH-POLISH-SLOVAK OPTICAL CONFERENCE ON WAVE AND QUANTUM ASPECTS OF CONTEMPORARY OPTICS | 2012年 / 8697卷

关键词：

Fiber Bragg Grating; temperature; sensor; vibrations; strain; DFB; laser diode; wavelength;

D O I：

10.1117/12.2010467

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The Fiber Bragg Grating (FBG) sensors are nowadays used in many applications. Thanks to its quite big sensitivity to a surrounding environment, they can be used for sensing of temperature, strain, vibration or pressure. A fiber Bragg grating vibration sensor, which is interrogated by a distributed feedback laser diode (DFB) is demonstrated in this article. The system is based on the intensity modulation of the narrow spectral bandwidth of the DFB laser, when the reflection spectrum of the FBG sensor is shifted due to the strain that is applied on it in form of vibrations caused by acoustic wave pressure from loud speaker. The sensor's response in frequency domain and strain is measured; also the factor of sensor pre-strain impact on its sensitivity is discussed.

引用

页数：9

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