Optical fiber temperature sensor based on a microcavity with polymer overlay

被引：96
|
作者：
Hernandez-Romano, Ivan [1 ]
Cruz-Garcia, Miguel A. [2 ]
Moreno-Hernandez, Carlos [3 ]
Monzon-Hernandez, David [3 ]
Lopez-Figueroa, Efrain O. [4 ]
Paredes-Gallardo, Omar E. [4 ]
Torres-Cisneros, Miguel [5 ]
Villatoro, Joel [6 ,7 ]
机构：
[1] Univ Guanajuato, Sede Palo Blanco, Dept Elect, Km 3-5 1-8,Carr Salamanca Valle Santiago, Guanajuato 36885, Mexico
[2] Univ Autonoma Tamaulipas, UAM Reynosa Rodhe, Fiber & Integrated Opt Lab, Carr Reynosa San Fernando S-N, Reynosa 88779, Tamaulipas, Mexico
[3] Ctr Invest Opt, Loma del Bosque 115, Guanajuato 37150, Mexico
[4] Univ Sonora, Div Ciencias Exactas & Nat, Dept Invest Fis, Blvd Luis Encinas & Rosales S-N, Hermosillo 83000, Sonora, Mexico
[5] Univ Guanajuato, Sede Palo Blanco, Elect Dept, Km 3-5 1-8,Carr Salamanca Valle de Santiago, Guanajuato 36885, Mexico
[6] Univ Basque Country UPV EHU, Escuela Tecn Super Ingn ETSI Bilbao, Dept Commun Engn, Alda Urquijo S-N, E-48013 Bilbao, Spain
[7] IKERBASQUE Basque Fdn Sci, E-48011 Bilbao, Spain
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 05期
关键词：
FABRY-PEROT-INTERFEROMETER; REFRACTIVE-INDEX; PDMS; TECHNOLOGIES; FABRICATION; FUTURE; STRAIN; TIP;
D O I：
10.1364/OE.24.005654
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An ultracompact, cost-effective, and highly accurate fiber optic temperature sensor is proposed and demonstrated. The sensing head consists of Fabry-Perot microcavity formed by an internal mirror made of a thin titanium dioxide (TiO2) film and a microscopic segment of single-mode fiber covered with Poly(dimethylsiloxane) (PDMS). Due to the high thermo-optic coefficient of PDMS the reflectance of the fiber-PDMS interface varies strongly with temperature which in turn modifies the amplitude of the interference pattern. To quantify the changes of the latter we monitored the visibility of the interference pattern and analyzed it by means of the fast Fourier transform. Our sensor exhibits linear response, high sensitivity, and response time of 14 seconds. We believe that the microscopic dimensions along with the performance of the sensor here presented makes it appealing for sensing temperature in PDMS microfluidic circuits or in biological applications. (C) 2016 Optical Society of America
引用
收藏
页码：5654 / 5661
页数：8
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