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

By C. Sabah and H. G. Roskos

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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.

Citation:
C. Sabah and H. G. Roskos, "Design of a Terahertz Polarization Rotator Based on a Periodic Sequence of Chiral-Metamaterial and Dielectric Slabs," Progress In Electromagnetics Research, Vol. 124, 301-314, 2012.
doi:10.2528/PIER11112605
http://www.jpier.org/PIER/pier.php?paper=11112605

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