Infrared Radiation Detection With Matched Fiber Bragg Gratings

被引：3
|
作者：
Caucheteur, Christophe [1 ]
Renoirt, J. M. [2 ]
Debliquy, M. [2 ]
Megret, P. [1 ]
机构：
[1] Univ Mons, Fac Polytech, Electromagnetism & Telecommun Unit, B-7000 Mons, Belgium
[2] Univ Mons, Fac Polytech, Mat Sci Unit, B-7000 Mons, Belgium
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 23期
关键词：
Fiber Bragg gratings (FBGs); infrared (IR) radiation; sensor; temperature; SENSORS;
D O I：
10.1109/LPT.2010.2083643
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this letter, a novel infrared (IR) radiation detector is proposed for early fire detection. It consists of two matched apodized fiber Bragg gratings (FBGs) cascaded in a single optical fiber and separated by a few centimeters. One of the gratings is covered with an IR-absorbing layer that converts the radiation into heat while the second FBG provides a temperature reference. To obtain a fast and cost-effective detector, the demodulation technique consists in measuring the total reflected power, which monotonically evolves in a range of flux that depends on the FBGs spectral characteristics. With the 24-mm-long Gaussian apodized FBGs used in this work, we report a mean sensitivity of 7 nW/(W/m(2)) in the range 0-3000 W/m(2)
引用
收藏
页码：1732 / 1734
页数：3
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