DESIGN OF A TERAHERTZ POLARIZATION ROTATOR BASED ON A PERIODIC SEQUENCE OF CHIRAL-METAMATERIAL AND DIELECTRIC SLABS

SABAH C., Roskos H. G.

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, vol.124, pp.301-314, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 124
  • Publication Date: 2012
  • Doi Number: 10.2528/pier11112605
  • Journal Name: PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.301-314
  • Middle East Technical University Northern Cyprus Campus Affiliated: No

Abstract

The lack of wave-plates for the terahertz region opens the way for novel components/devices enabling polarization control at these frequencies. With the aid of chiral metamaterials - a new class of metamaterials novel possibilities for the fabrication of multilayer structures for the realization of polarization rotators emerge. In this study, we present design and analysis of a polarization rotator for the terahertz frequency regime based on a multilayer structure consisting of an alternating sequence of chiral-metamaterial- and dielectric-plates. The combination of chiral constituents with dielectrics permits optimization of the spectral-filter and polarization-rotation features. We can generate either polarization-rotation combs or narrow rotation bands with very good and broad sideband suppression, of interest for example for data transmission or sensing purposes.