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On the performance of a tunable grating-based high sensitivity unidirectional plasmonic sensor

Abstract: Optical biosensing is currently an intensively active research area, with an increasing demand of highly selective, sensitivity-enhanced and low-cost devices where different plasmonic approaches have been developed. In this work we propose a tunable optimized grating-based gold metasurface that can act both as a high sensitivity sensor device (up to 1500 nm/RIU) and as an unidirectional plasmon source. The theory behind surface plasmon polariton generation is recalled to thoroughly understand the influence that every parameter of the grating source has on the performance of the proposed device. The results and conclusions discussed here offer a key step toward the design of biosensors based on excitation of surface plasmons polaritons by grating-based structures or in the process of creating new nanophotonic circuit devices.

 Fuente: Optics Express, 2021, 29 (9) , 13733 - 13745

 Editorial: The Optical Society (OSA)

 Fecha de publicación: 01/04/2021

 Nº de páginas: 13

 Tipo de publicación: Artículo de Revista

 DOI: 10.1364/OE.422026

 ISSN: 1094-4087

 Proyecto español: PGC2018-096649-B-I

 Url de la publicación: https://doi.org/10.1364/OE.422026