A systematic approach to enhance off-axis directional electromagnetic wave by twodimensional structure design

Dongyeal Lim, Dongheok Shin, Hyundo Shin, Kyoungsik Kim, Jeonghoon Yoo

Research output: Contribution to journalArticle

13 Citations (Scopus)


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 languageEnglish
Pages (from-to)6511-6518
Number of pages8
JournalOptics Express
Issue number6
Publication statusPublished - 2014 Jan 1


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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