RT Journal Article
T1 Ultra-narrow spectral response of a hybrid plasmonic-grating sensor
A1 Elshorbagy, Mahmoud Hamdy Mohamed
A1 Cuadrado, Alexander
A1 García Cámara, Braulio
A1 Vergaz Benito, Ricardo
A1 Gómez Pedrero, José Antonio
AB We configure and analyze a nanostructured device that hybridizes grating modes and surface plasmon resonances. The model uses an effective index of refraction that considers the volume fraction of the involved materials, and the propagation depth of the plasmon through the structure. Our geometry is an extruded low-order diffraction grating made of dielectric nano-triangles. Surface plasmon resonances are excited at a metal/dielectric interface, which is separated from the analyte by a high-index dielectric layer. The optical performance of the refractometric sensor is highly competitive in sensitivity and figure of merit (FOM) because of the the ultra-narrow spectral response (below 0.1 nm). Moreover, it is operative within a wide range of the index of refraction (from 1.3 till 1.56), and also works under normal incidence conditions.
PB Institute of Electrical and Electronics Engineers (IEEE)
SN 1530-437X
YR 2020
FD 2020-04-01
LK https://hdl.handle.net/10016/35554
UL https://hdl.handle.net/10016/35554
LA eng
NO This work was supportedin part by the Ministerio de Economía y Competitividad of Spainunder Grant TEC2016-77242-C3-1-R and Grant DPI2016-75272-R,in part by the Comunidad de Madrid SINFOTON2-CM under Grant(S2018/NMT-4326), and in part by the European Fund for RegionalDevelopment. The work of M. H. Elshorbagy was supported by theMinistry of Higher Education of Egypt (missions section).
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RD 27 jul. 2024