Inverse Design of Tapers by Bio-Inspired Algorithms

• Autor(a) principal: Sisnando,Anderson Dourado
• Data de Publicação: 2020
• Outros Autores: Esquerre,Vitaly Félix Rodriguez, Vieira,Luana da França, Rubio-Mercedes,C. E.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of Microwaves. Optoelectronics and Electromagnetic Applications
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742020000100039
• topic: Integrated optics devices; Numerical approximation and analysis; Waveguides; Subwavelength structures

Abstract The efficiency of optical power transferred between two bidimensional waveguides, continuous waveguide and periodic subwavelength waveguide has been designed and optimized by using a taper composed by variable length segments (0.03 − 0.27 µm). Waveguides with variable width (270 − 330 nm) have been considered and the number of segments on the taper region has been varied from 10 to 15. The optimized taper was efficiently designed using bio-inspired algorithms based on the genetic algorithms and the artificial immune system. The power coupled has been computed using the frequency domain finite element method. The best solution is 20% shorter than previously existent tapers with coupling light efficiency above 90% over a broadband interval of frequencies and it exhibits high fabrication error tolerances.