Abstract-Diode switchable chiral metamaterial structure for polarization manipulation

Oscar Fernández,  Álvaro Gómez,  Angel Vegas,  Gregorio J. Molina-Cuberos,  Ismael Barba,

http://ieeexplore.ieee.org/document/7964226/

This communication presents a novel diode switchable chiral metamaterial structure that manipulates the polarization in different ways depending on the active bias lines. Three different bias states that provide three totally different behaviors have been considered: polarization rotator, circular polarization converter and linear to circular converter.

Abstract-Review on Polarization Selective Terahertz Metamaterials: from Chiral Metamaterials to Stereometamaterials

• Elizabath Philip, 
• M. Zeki Güngördü, 
• Sharmistha Pal, 
• Patrick Kung, 
• Seongsin Margaret Kim
• • 
    

https://link.springer.com/article/10.1007%2Fs10762-017-0405-y

In this article, recent progress and development of terahertz chiral metamaterials including stereometamaterials are thoroughly reviewed. This review mainly focuses on the fundamental principles of design and arrangement of meta-atoms in metamaterials exhibiting chirality with various asymmetry and symmetry and 2D and 3D configuration. Related optical and propagation properties in chiral metamaterials, such as optical activity, circular dichroism, and negative refraction for each different chiral metamaterials, are compared and investigated. Finally, comparison between chiral metamaterials with stereometamaterials in terms of the polarization selective operation along with the similarity and the distinction is addressed as well.