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Inverse Design of Tapers by Bio-Inspired Algorithms

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posted on 2020-03-18, 02:48 authored by Anderson Dourado Sisnando, Vitaly Félix Rodriguez Esquerre, Luana da França Vieira, C. E. Rubio-Mercedes

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.

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    Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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