Fiber optic humidity sensor using water vapor condensation

被引:28
作者
Limodehi, Hamid E. [1 ]
Legare, Francois [1 ]
机构
[1] Inst Natl Rech Sci, Ctr Energie Mat & Telecommun, 1650 Blv Lionel Boulet, Varennes, PQ, Canada
基金
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词
SURFACE-PLASMON RESONANCE; DEVICE;
D O I
10.1364/OE.25.015313
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The rate of vapor condensation on a solid surface depends on the ambient relative humidity (RH). Also, surface plasmon resonance (SPR) on a metal layer is sensitive to the refractive index change of its adjacent dielectric. The SPR effect appears as soon as a small amount of moisture forms on the sensor, resulting in a decrease in the amount of light transmitted due to plasmonic loss. Using this concept, we developed a fiber optic humidity sensor based on SPR. It can measure the ambient RH over a dynamic range from 10% to 85% with an accuracy of 3%. (C) 2017 Optical Society of America
引用
收藏
页码:15313 / 15321
页数:9
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