Long-Period Gratings Dynamic Interrogation With Modulated Fiber Bragg Gratings and Optical Amplification

被引：8
|
作者：
Carvalho, J. P. [1 ]
Coelho, L. [1 ]
Pontes, M. J. [5 ]
Barbero, A. P. [7 ]
Martinez, M. A. [6 ]
Ribeiro, R. M.
Weyl, J. [4 ]
Baptista, J. M. [1 ,2 ]
Giraldi, M. T. R. [3 ]
Dias, I. [1 ]
Santos, J. L. [1 ]
Frazao, O. [1 ]
机构：
[1] Univ Porto, Fac Ciencias, INESC Porto, P-4169007 Oporto, Portugal
[2] Univ Madeira, Ctr Ciencias Exactas & Engn, P-9000390 Funchal, Portugal
[3] IME Inst Mil Engn, BR-22290270 Rio De Janeiro, Brazil
[4] Fed Univ Para, Fac Engn Comp, BR-66075900 Belem, Para, Brazil
[5] Univ Fed Espirito Santo, BR-2907591 Vitoria, Brazil
[6] CEFET RJ, Dept Engn Eletron, BR-20271110 Rio De Janeiro, Brazil
[7] Univ Fed Fluminense, Dept Engn Telecomunicacoes, BR-24220110 Niteroi, RJ, Brazil
来源：
IEEE SENSORS JOURNAL | 2012年 / 12卷 / 01期
关键词：
Fiber Bragg gratings (FBGs); long-period gratings (LPGs); optical fiber sensors; sensor interrogation; TEMPERATURE; SENSOR;
D O I：
10.1109/JSEN.2011.2128305
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：
It is reported a long-period grating (LPG) dynamic interrogation technique based on the modulation of fiber Bragg gratings located in the readout unit of the system. It permits to attenuate the effect of the 1/f noise of the electronics in the resolution of the LPG-based sensing head. The concept is tested to detect variations of the external refractive index and a resolution of 2.0 x 10(-4) NIR was achieved without system optimization. Additionally, the effect in the sensor resolution when introducing Erbium and Raman optical amplification is experimentally investigated.
引用
收藏
页码：179 / 183
页数：5
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