Photonic crystal sub-wavelength λ/5 focusing lens design using optimization method

Kucukates B., Turduev M., Bor E., KURT H.

18th International Conference on Transparent Optical Networks, ICTON 2016, Trento, Italy, 10 - 14 July 2016, vol.2016-August identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2016-August
  • Doi Number: 10.1109/icton.2016.7550405
  • City: Trento
  • Country: Italy
  • Keywords: photonic crystals, sub-wavelength focusing, differential evolution algorithm, PLASMONICS
  • TED University Affiliated: Yes

Abstract

© 2016 IEEE.In this paper, differential evolution (DE) optimization algorithm is applied to design sub-wavelength focusing PCs structure for the first time to the best of our knowledge. For this purpose, the transverse cross section of the input beam is spatially shaped by optimized PC structure. Strong focusing of beam with FWHM equal to λ/5 and with suppressed magnitude of side lobe intensities is achieved. In addition, microwave experiments to verify the numerical results are conducted. The numerical and experimental results given in the paper are in good agreement with each other.