Noncontact Optical Fiber Sensor for Measuring the Refractive Index of Liquids

被引：4

作者：

Selvas-Aguilar, R. ^{[1
]}

Castillo-Guzman, A. ^{[1
]}

Cortez-Gonzalez, L. ^{[1
]}

Toral-Acosta, D. ^{[1
]}

Martinez-Rios, A. ^{[2
]}

Anzueto-Sanchez, G. ^{[3
]}

Duran-Ramirez, V. M. ^{[4
]}

Arroyo-Rivera, S. ^{[1
]}

机构：

[1] Univ Autonoma Nuevo Leon, Fac Ciencias Fis Matemat, Ave Univ S-N,Cd Univ, San Nicolas De Los Garza 66455, NL, Mexico

[2] Ctr Invest Opt AC, Loma Bosque 115, Leon 37150, Gto, Mexico

[3] Univ Autonoma Estado Morelos, Ctr Invest Ingn & Ciencias Aplicadas, Ave Univ 1001, Cuernavaca 62209, Morelos, Mexico

[4] Univ Autonoma Guadalajara, Ctr Univ Lagos, Enrique Diaz de Leon 1144, Lagos De Moreno 47460, Jal, Mexico

来源：

JOURNAL OF SENSORS | 2016年 / 2016卷

关键词：

FRESNEL REFLECTION; SYSTEM;

D O I：

10.1155/2016/3475782

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：

A noncontact optical fiber sensor for measuring the refractive index of transparent liquids is proposed. It operates by calculating the path of a focused laser beam at 635 nm that travels across the boundaries of a liquid sample. The optical power Fresnel reflections are detected and, subsequently, the refractive index is determined as the ratio between the traveled beam paths when the liquid is deposited versus a reference without the liquid sample. Additionally, a mathematical analysis of the geometrical case is included. The theoretical data from our sensor are in good agreement with the experimental results. The resolution achieved by the sensor is better than 10(-3) RIU.

引用

页数：6

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