Simultaneous bend and temperature sensor using tilted FBG

被引：25

作者：

Caucheteur, C ^{[1
]}

Chah, K ^{[1
]}

Lhommé, F ^{[1
]}

Blondel, A ^{[1
]}

Mégret, P ^{[1
]}

机构：

[1] Fac Polytech Mons, Electromagnetism & Telecommun Unit, B-7000 Mons, Belgium

来源：

17th International Conference on Optical Fibre Sensors, Pts 1 and 2 | 2005年 / 5855卷

关键词：

fiber Bragg gratings; tilted; sensor; temperature; bending;

D O I：

10.1117/12.623421

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We propose a simple, very reliable and fast optical sensor based on a tilted fiber Bragg grating for the simultaneous measurement of temperature and macro bending. The transmitted spectrum of a tilted Bragg grating is composed of numerous discrete dips which have two distinct origins : the dip at the longest wavelength comes from the self coupling of the core mode while the others are due to the backward coupling with the cladding modes. We apply a different demodulation technique to each of these two contributions in order to realize a dual sensor. This sensor allows the detection of small curvatures and provides a good accuracy.

引用

页码：707 / 710

页数：4

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