ε-near-zero (ENZ) graded index quasi-optical devices: steering and splitting millimeter waves

V. Pacheco-Pena, V. Torres, M. Beruete, Miguel Navarro-Cia, Nader Engheta

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)
181 Downloads (Pure)

Abstract

Graded index ε-near-zero (GRIN-ENZ) quasi-optical components such as beam steerers and power splitters are designed, simulated and analyzed. The GRIN-ENZ medium is realized using stacked narrow hollow waveguides whose infinite array shows the first transmission peak at 1.0002 THz. Several GRIN-ENZ beam steerers to channel a normal incident plane wave to different output angles (15, 45, 65 and 80°) with good impedance matching (low reflection) are analytically and numerically demonstrated using planar structures with a thickness of 5λ0=1500 μm along the z-axis. Moreover, symmetrical and asymmetrical power splitters are designed with output angles (±45°) and (-80, +35°), respectively.

Original languageEnglish
Article number094009
JournalJournal of Optics
Volume16
Issue number9
DOIs
Publication statusPublished - 3 Sept 2014

Keywords

  • epsilon-near-zero
  • metamaterials
  • quasioptical

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

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