Study of deformed quasi-periodic Fibonacci two dimensional photonic crystals

[摘要] Quasi-periodic photonic crystals are not periodic structures. These structures are generally obtained by the arrangement of layers according to a recursive rule. Properties of these structures make more attention the researchers especially in the case when applying defects. So, photonic crystals with defects present localized modes in the band gap leading to many potential applications such light localization. The objective of this work is to study by simulation the effect of the global deformation introduced in 2D quasiperiodic photonic crystals. Deformation was introduced by applying a power law, so that the coordinates y of the deformed object were determined through the coordinates x of the non-deformed structure in accordance with the following rule: y = x1+k. Here k is the coefficient defining the deformation. Therefore, the objective is to study the effect of this deformation on the optical properties of 2D quasiperiodic photonic crystals, constructed by Fibonacci generation. An omnidirectional mirror was obtained for optimization Fibonacci iteration in a part of visible spectra.

[发布机构] Laboratoire de Photovoltaïques et Matériaux de Semi-conducteurs-ENIT, Université de Tunis El Manar, le belvedére, Tunis; 1002, Tunisia^1;Laboratoire de Photovoltaïques et Materiaux de Semi-conducteurs-ENIT-IPEI Tunis Montfleury, Université de Tunis, Tunisia^2

[效力级别] 数学

[关键词] Global deformations;Light localization;Localized modes;Omnidirectional mirrors;Quasi-periodic photonic crystals;Recursive rules;Two-dimensional photonic crystals;Visible spectra