RT Journal Article
T1 Performance improvement of refractometric sensors through hybrid plasmonic-Fano resonances
A1 Hamdy Mohamed Elshorbagy, Mahmoud
A1 Cuadrado Conde, Alexander
A1 González Contreras, Gabriel
A1 González Contreras, Francisco Javier
A1 Alda, Javier
AB 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 combines the quality parameter of the resonance and the field enhancement at the interaction volume where the plasmon propagates. Our device shows a high sensitivity (1000 nm/RIU) and a high Figure of Merit (775 RIU−1). Degradation in performance is negligible through a wide dynamic range up to 0.7 RIU. These quantitative parameters overperform compared to similar plasmonic sensors.
PB IEEE
SN 0733-8724
YR 2019
FD 2019-03-27
LK https://hdl.handle.net/20.500.14352/13175
UL https://hdl.handle.net/20.500.14352/13175
LA eng
NO (c) 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works
NO Ministerio de Economía y Competitivad (MINECO)
NO Ministry of Higher Educatión of Egypt (MOHE)
NO Centro Mexicano de Innovacion en Energía Solar (México)
NO National Laboratory Program from Consejo Nacional de Ciencia y Tecnología of Mexico (CONACYT)
NO Terahertz Science and Technology National Lab (LANCYTT).
DS Docta Complutense
RD 25 abr 2025