Optical filters based in quasiperiodic photonic crystal

• Autor(a) principal: Vasconcelos, Manoel Silva de
• Data de Publicação: 2009
• Outros Autores: Mauriz, P. W., Albuquerque, Eudenilson Lins de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRN
• DOI: 10.1016/j.mejo.2008.11.023
• Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/30185
• topic: Optical filters; Optical nonlinearity; Photonic; Quasiperiodic

In this work we investigate theoretically the behavior of a light beam incident on a wð2Þ nonlinear quasiperiodic photonic crystal (or quasiperiodic S˘olc filter), in which each building block containing a pair LiNbO3 layers with antiparallel poled domains, arranged in a quasiperiodical fashion which follows the Pell, Fibonacci, Thue–Morse, and double-period substitutional sequences. The transmittances at filtering wavelengths can be modulated from 0 to 1 by applying an external voltage but the filtering wavelengths are unchanged. We show that the filtering wavelengths tuned by varying voltage around 0.9 kV, indicate that quasiperiodic S˘olc filter based in Pell and Thue–Morse sequences are so efficient as the Fibonacci S˘olc filter, while the double-period sequence have a low efficiency