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Analysis of the behavior of an all-optical not logic gate in a photonic crystal directional coupler / Análise do comportamento de uma porta lógica not totalmente óptica em um acoplador direcional de cristal fotônico

2022; Brazilian Journal of Development; Volume: 8; Issue: 4 Linguagem: Inglês

10.34117/bjdv8n4-491

2525-8761

Jorge Everaldo de Oliveira, Fábio Barros de Sousa, Jackson Moreira Oliveira, Lelis Araújo de Oliveira, Hudson Afonso Batista da Silva, Elizabeth Rego Sabino, Fabio Souza de Araújo, Alan dos Reis Silva, Fabrício Pinho da Luz, Marcos Benedito Caldas Costa,

Photonic Crystals and Applications

In the present work, an optical directional coupler (ODC) based on two-dimensional (2-D) photonic crystal (PhC) was analyzed and proposed, through the methods of plane wave expansion (PWE) and finite-difference time-domain (FDTD), which were used with the purpose of analyzing the behavior of a new all-optical NOT logic gate and the electric field distribution in the coupler for linear (bar), non-linear (cross) states and the control signal. The simulation results in OptiFDTD software show that the proposed crystal structure is a strong candidate for use in ultrafast photonic integrated circuits (PICs), being highly advantageous with excellent transmission performance and simple design.