Directional Cloaking by Quadruple Luneburg Lens System

Evren A. S., Babayigit C., Bor E., Kurt H., Turduev M.

20th International Conference on Transparent Optical Networks, ICTON 2018, Bucharest, Romania, 1 - 05 July 2018, vol.2018-July identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2018-July
  • Doi Number: 10.1109/icton.2018.8473595
  • City: Bucharest
  • Country: Romania
  • Keywords: photonic crystals, invisibility cloak, graded photonic crystals, Luneburg lens, integrated optics, PHOTONIC CRYSTALS
  • TED University Affiliated: Yes

Abstract

© 2018 IEEE.In this study, we propose a method based on graded-index medium in order to cloak scatterer objects. We use discretized Luneburg lenses as a graded-index medium and the proposed structure consists of four discretized Luneburg lenses, i.e., it is can be considered as a quadruple Luneburg lens system. Numerical investigations for directional cloaking are performed by using finite-difference time-domain methods. It is shown that an object can be cloaked inside the dark zone of created by Luneburg lenses and the proposed structure can provide cloaking at optical wavelengths.