Journal
OPTICS EXPRESS
Volume 25, Issue 13, Pages 15313-15321Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.015313
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Funding
- Institut National de la Recherche Scientifique -Energie, Materiaux et Telecommunications (INRS-EMT)
- Canada Foundation for Innovation - Major Science Initiatives
- NSERC discovery grant
- NSERC CREATE Integrated Sensor Systems (ISS) [3713052010]
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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
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