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2019-09-09 - Article/Dans un journal avec peer-review - Anglais - 4 page(s)

Cai Shunshuo, Gonzalez Vila Alvaro , Zhang Xuejun, Guo Tuan, Caucheteur Christophe , "Palladium-coated plasmonic optical fiber gratings for hydrogen detection" in Optics Letters, 44, 18, 4483-4486, 10.1364/OL.44.004483

  • Edition : Optical Society of America (NY)
  • Codes CREF : Capteurs et périphériques (DI2563), Matériaux optiques (DI1256), Optique des fibres (électromagnétisme) (DI1252)
  • Unités de recherche UMONS : Electromagnétisme et Télécommunications (F108)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Ingénierie des matériaux (CRIM)
Texte intégral :

Abstract(s) :

(Anglais) Surface plasmon resonance excitation with tilted fiber Bragg gratings has been typically studied using gold films to target biochemical sensing applications. However, surface plasmons can be excited on other metal coatings as well. In this work, plasmonic optical fiber grating platforms are developed using palladium films. Since the optical properties of this metal differ from the ones of gold, simulations are carried out to define the optimal thickness. Due to the phase transition of palladium in the presence of hydrogen, intensity changes in the optical transmission of the devices are produced. It is demonstrated that these platforms can be used for hydrogen detection at concentrations way below the lower explosive limit.