Abstract
In this study, we propose a two-dimensional (2D) dielectric structure tailored by a systematic design approach on the exit side of a metallic aperture to enhance the off-axis electromagnetic (EM) wave. We adopted a phase field method based topology optimization scheme and designed an arbitrary 2D dielectric structure in order to steer outward beaming through an aperture to a specific direction. Beyond previous onedimensional structure, we proposed an arbitrary 2D dielectric structure through the introduced design process defining not only x- but also ydirectional dielectric structural boundaries simultaneously and experimentally confirmed enhanced EM wave transmission to a desired direction.
Original language | English (US) |
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Pages (from-to) | 6511-6518 |
Number of pages | 8 |
Journal | Optics Express |
Volume | 22 |
Issue number | 6 |
DOIs | |
State | Published - 2014 |
Externally published | Yes |