Hybrid FBG-LPG sensor for surrounding refractive index and temperature simultaneous discrimination
Hybrid FBG-LPG sensor for surrounding refractive index and temperature simultaneous discrimination
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DOI：
10.1016/j.optlastec.2011.10.020
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发表时间：
2012-06-01
影响因子：
5
通讯作者：
Rocco Giraldi, Thereza M.
中科院分区：
文献类型：
--
作者：
Chamorro Enriquez, Daniel Alfredo;da Cruz, Alberto R.;Rocco Giraldi, Thereza M.
在这项工作中，我们提出了一种混合光纤布拉格光栅与长周期光栅传感器的配置，用于同时检测周围的折射率和温度，应用于水环境并揭示污染。我们对这种传感器进行了仿真，并分析了光纤布拉格光栅光谱的反射波长和幅度变化，分别获得了温度和外部折射率的变化。结果表明，光纤布拉格光栅反射幅度的变化取决于长周期光栅透射光谱随周围折射率变化的变化，反射波长的变化取决于水溶液的温度。 (C) 2011 Elsevier Ltd. 保留所有权利。
In this work, we propose a configuration of a hybrid fiber Bragg grating together with a long period grating sensor used for simultaneously detect surrounding refractive index and temperature to be applied in aqueous environment and to reveal pollution. We present the simulation of such sensor and analyze the reflected wavelength and amplitude variations of the fiber Bragg grating spectrum to obtain the temperature and the external refractive index variations, respectively. The results show that the fiber Bragg grating reflected amplitude change depends on the variation of the long period grating transmission spectrum with the surrounding refractive index modification and the reflected wavelength shift depends on the temperature of the aqueous solution. (C) 2011 Elsevier Ltd. All rights reserved.