Sensor Plasmônico Krestschmann Baseado em Grafeno na faixa de Terahertz

Wendria Silva, Yago G da Conceição, Karlo Queiroz Costa

DOI: 10.14209/sbrt.2021.1570724226

Evento: XXXIX Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2021)

Keywords: Ondas em Terahertz Sensor Plasmônico Grafeno Configuração de Kretschmann

Abstract

This paper proposes a graphene-based terahertz plasmatic refractive index sensor. The configuration used is Kretschmann, where the chemical potential is the variable that monitors the reflectivity. The sensor was analyzed theoretically by the two-dimensional finite element method, where reflectivity and field distributions were calculated for different parameters. First, a study was done to determine the best operating frequency, incidence angle and minimum sample thickness. After, the sensitivity, bandwidth and resolution were analyzed, with mean values obtained 0,312 eV/RIU, 0,03399 eV and 0,0106 RIU, respectively.

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