A reliable, sensitive and fast optical fiber hydrogen sensor based on surface plasmon resonance
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Updated: Feb 10, 2026

Engineering Antiviral Agents via Surface Plasmon Resonance
Published on: June 14, 2022
Cédric Perrotton1, Ruud J Westerwaal, Nicolas Javahiraly
1Laboratoire des Systèmes Photoniques-Institut d'Électronique du Solide et des Systèmes, Université de Strasbourg, Illkirch, France.
Abstract:
We report for the first time on the experimental response of a Surface Plasmon Resonance fiber optic sensor based on wavelength modulation for hydrogen sensing. This approach of measuring the hydrogen concentration makes the sensor insensitive to intensity fluctuations. The intrinsic fiber sensor developed provides remote sensing and enables the possibility of multi-points sensing. The sensor consists of a multilayer of 35 nm Au/180 nm SiO2/Pd deposited on a step- index multimode fiber core. The sensitivity and selectivity of the sensor are optimal at a Pd thickness of 3.75 nm. The sensor is sensitive to a hydrogen concentration ranging between 0.5 and 4% H2 in Ar, with a response time less than 15 s.
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