FBG Sensor Demodulation Using a Double-Pass Mach-Zhender Interferometer

被引：0

作者：

Park, Hyoung Jun ^{[1
]}

Song, Minho ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Div Elect & Informat Engn, Jeonju 561756, South Korea

来源：

JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING | 2007年 / 27卷 / 04期

关键词：

Fiber Bragg Grating; Fiber-Optic Sensor; Mach-Zehnder Interferometer; Strain Sensor; Temperature Sensor;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A wavelength-demodulation algorithm for FBG sensor is proposed by using a double-pass Mach-Zehnder interferometer. Zero-crossing points of double-passed interference signal are used to trigger the accurate 90 phase difference positions in the sensor signal, which is an essential condition in the subsequent arctangent and phase unwrapping signal processing. With the proposed method, we could efficiently measure various measurands, such as dynamic-, static-strain, and temperature, and-8pm of wavelength resolution was obtained.

引用

页码：285 / 290

页数：6

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