Fresnel-reflection-based f\iber sensor for on-line measurement of solute concentration in solutions
Fresnel-reflection-based f\iber sensor for on-line measurement of solute concentration in solutions
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DOI：
10.1016/j.snb.2007.04.008
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发表时间：
2007-10-01
影响因子：
8.4
通讯作者：
Huang, Xu Guang
中科院分区：
文献类型：
--
作者：
Su, Hui;Huang, Xu Guang
介绍了一种结构简单的光纤传感器，用于测量溶液中的溶质浓度。该传感器仅使用一个二极管激光器作为光源，三个耦合器，两个带保护包层的传感光纤端和两个光电探测器。测量原理基于相对菲涅耳反射强度。在装置中测量了不同浓度的盐溶液和糖溶液。实测数据与线性方程拟合良好，R-2值均大于0.995。应用相关技术，有效地消除了光源波动和环境影响带来的误差，提高了长时间测量的稳定性。(C) 2007 Elsevier B.V.版权所有
A fiber sensor with a simple structure for measuring solute concentration in solutions is presented. The sensor uses only a diode laser as light source, three couplers, two sensing fiber ends with protective cladding, and two photodetectors. The measurement principle is based on relative Fresnel reflective intensity. Various concentrations of salt solution and sugar solution are measured in the setup. The measured data are fitted to linear equation very well and the values of R-2 are more than 0.995. Applying the relative technique, the errors resulted from fluctuation of light source and influences of environment are effectively eliminated, and the stability for long time measurement can be improved. (C) 2007 Elsevier B.V. All rights reserved.