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

页码：1732 / 1734

页数：3

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