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

页码：179 / 183

页数：5

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