Affiliations: [a] Department of Electronics, Quaid-i-Azam University,
Islamabad, Pakistan | [b] Department of Physics, COMSATS Institute of
Information Technology, Islamabad, Pakistan
Correspondence:
[*]
Corresponding author: Nayyar Abbas Shah, Department of
Electronics, Quaid-i-Azam University, Islamabad 45320, Pakistan. E-mail: nayyarabbas07@yahoo.com
Abstract: Behavior of different planar multilayer periodic structures due to
plane wave excitation has been studied using the transfer matrix method.
Multilayer structure is composed of odd number of slabs and the layers at odd
locations have same characteristics and layers at even locations have same
characteristics. For each structure, layers at odd locations are of chiral
nihility metamaterial whereas three different cases are considered for layers
at even locations, i.e., dielectric, chiral and chiral nihility. Effects of
polarization rotation due to the optical activity of material's chirality is
studied with respect angle of incidence and frequency in THz region. Chiral
nihility adds property of transparency to the structure for normal incidence.
Chiral nihility-chiral nihility structure for normal incidence yields
transparency whereas same structure for oblique incidence yields total
rejection at higher frequencies.
Keywords: Chiral and chiral nihility metamaterials, transfer matrix method, electromagnetic mirror, polarization rotator
