Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances

  title={Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances},
  author={Mahmoud Hamdy Elshorbagy and Alexander Cuadrado and Gabriel Gonz{\'a}lez and Francisco Javier Gonz{\'a}lez and Javier Alda},
  journal={Journal of Lightwave Technology},
In this paper, we present a plasmonic refractometric sensor that works under normal incidence; allowing its integration on a fiber tip. The sensor's material and geometry exploit the large scattering cross section given by high contrast of the index of refraction subwavelength dielectric gratings. Our design generates a hybrid plasmonic–Fano resonance due to the interference between the surface plasmon resonance and the grating response. We optimize the sensor with a merit function that… 

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