Manipulating linearly polarized electromagnetic waves using the asymmetric transmission effect of planar chiral metamaterials

2014 ◽  
Vol 16 (3) ◽  
pp. 035105 ◽  
Author(s):  
Song Han ◽  
Helin Yang ◽  
Linyan Guo ◽  
Xiaojun Huang ◽  
Boxun Xiao
Keyword(s):  
Electromagnetic Waves ◽  
Asymmetric Transmission ◽  
Chiral Metamaterials ◽  
Transmission Effect ◽  
Linearly Polarized

Asymmetric transmission of linearly polarized electromagnetic waves using chiral metamaterials with constant chirality over a certain frequency band

2014 ◽  
Vol 28 (32) ◽  
pp. 1450250 ◽  
Author(s):  
Furkan Dincer ◽  
Muharrem Karaaslan ◽  
Oguzhan Akgol ◽  
Emin Unal ◽  
Cumali Sabah
Keyword(s):  
Frequency Band ◽  
Electromagnetic Waves ◽  
Dynamic Structure ◽  
Dielectric Substrate ◽  
Suggested Model ◽  
Asymmetric Transmission ◽  
Chiral Metamaterials ◽  
Linearly Polarized ◽  
Novel Devices ◽  
Polarization Rotators

In this study, a dynamic chiral metamaterial (MTM) structure leading to an asymmetric electromagnetic (EM) wave transmission for linear polarization is presented. The structure is composed of square-shaped resonator with gaps on both sides of a dielectric substrate with a certain degree of rotation. The dynamic structure is adjustable via various parameters to fit any desired frequency ranges. Theoretical and experimental analysis of the proposed structure are conducted and given in detail. The suggested model can provide constant chirality over a certain frequency band and thus, it can be used to design myriad novel devices such as EM transmission and antireflection filters, and polarization rotators for desired frequency regimes.

Asymmetric transmission of linearly polarized waves in terahertz chiral metamaterials

2017 ◽  
Vol 121 (3) ◽  
pp. 033103 ◽  
Author(s):  
Shenying Fang ◽  
Kang Luan ◽  
Hui Feng Ma ◽  
Wenjin Lv ◽  
Yuxiang Li ◽  
...  
Keyword(s):  
Asymmetric Transmission ◽  
Chiral Metamaterials ◽  
Polarized Waves ◽  
Linearly Polarized

scholarly journals Asymmetric Transmission in a Mie-Based Dielectric Metamaterial with Fano Resonance

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1003 ◽  
Author(s):  
Xiaobo Wang ◽  
Haohua Li ◽  
Ji Zhou
Keyword(s):  
High Performance ◽  
Near Field ◽  
Destructive Interference ◽  
Asymmetric Transmission ◽  
Microwave Frequencies ◽  
Chiral Metamaterials ◽  
Field Coupling ◽  
Polarized Waves ◽  
Linearly Polarized ◽  
Polarization Rotators

Chiral metamaterials with asymmetric transmission can be applied as polarization-controlled devices. Here, a Mie-based dielectric metamaterial with a spacer exhibiting asymmetric transmission of linearly polarized waves at microwave frequencies was designed and demonstrated numerically. The unidirectional characteristic is attributed to the chirality of the metamolecule and the mutual excitation of the Mie resonances. Field distributions are simulated to investigate the underlying physical mechanism. Fano-type resonances emerge near the Mie resonances of the constituents and come from the destructive interference inside the structure. The near-field coupling further contributes to the asymmetric transmission. The influences of the lattice constant and the spacer thickness on the asymmetric characteristics were also analyzed by parameter sweeps. The proposed Mie-based metamaterial is of a simple structure, and it has the potential for applications in dielectric metadevices, such as high-performance polarization rotators.

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