Asymmetric Transmission of Linearly Polarized Waves and Dynamically Wave Rotation Using Chiral Metamaterial

Abstract

The asymmetric transmission of the linearly polarized waves at normal incidence through the lossy anisotropic chiral structure is demonstrated. The proposed chiral metamaterial structure is composed of bi-layered discontinuous cross-wire-strips, and it is utilized in order to realize polarization rotation. Firstly, the theoretical relations between the incident polarization and the polarization rotation are derived using transmission matrices. Secondly, a strong and dynamically asymmetric transmission of linearly polarized electromagnetic wave through the chiral metamaterial has been demonstrated for microwave region, both by simulation and experimentally. The experiment results are in good agreement with the simulation ones. It can be seen from the results that the proposed chiral metamaterial structure can be used to design novel polarization control devices for several frequency regions.

Efficient Dual-Band Asymmetric Transmission of Linearly Polarized Wave Using a Chiral Metamaterial

“…In 2010, Menzel et al designed a novel three-dimensional chiral optical MM that realized the AT effect for both linearly and circularly polarized waves by breaking the mirror symmetry in the direction perpendicular to the propagation direction [11]. Subsequently, various CMM structures that could be used to achieve AT for linearly polarized wave have been demonstrated [12][13][14][15][16][17]. However, in the earlier proposed CMM, the AT effect is usually in a narrow band which separates them from the practical applications.…”

Dual-Band Circular Polarizer and Linear Polarization Transformer Based on Twisted Split-Ring Structure Asymmetric Chiral Metamaterial

“…CMMs are of great current interest both for customized functionalities and for potential applications not found in natural medium arise from the magneto-electric cross coupling of chiral structures due to their lack of any mirror symmetry. As a fact, besides negative refractive index, CMMs can also achieve other exotic EM characteristics, such as giant gyrotropy [4], strong polarization rotation (giant optical activity) [5][6][7][8][9][10][11], circular polarizer (circular dichroism, CD effect) [12][13][14][15], asymmetric transmission (AT) effect [16][17][18][19][20][21], linear or/to circular polarization conversion [22][23][24][25][26][27][28][29][30][31][32], and even the prospect of a repulsive Casimir force [33,34] by special enantiomeric forms or similar chiral structure design. The cross-coupling is original physics of these special electromagnetic (EM) properties [35,36].…”

Polarization Angle Independent Perfect Metamaterial Absorbers for Solar Cell Applications in the Microwave, Infrared, and Visible Regime

“…Recent studies show that MTMs provide improvement in light collection for solar cells [5][6][7]. MTMs are artificial structures [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] and they can be specifically constructed for many desired physical properties and applications which cannot be obtained from the conventional materials such as negative refractive index [24], cloaking [25], super lens [26], absorber [27], and so on. Therefore, MTMs have gained a great deal of interest due to their large applicability in the development of efficient devices.…”