Asymmetric transmission for linearly polarized electromagnetic radiation

Abstract

Metamaterials have shown to support the intriguing phenomenon of asymmetric electromagnetic transmission in the opposite propagation directions, for both circular and linear polarizations. In the present article, we propose a criterion on the relationship among the elements of transmission matrix, which allows asymmetrical transmission for linearly polarized electromagnetic radiation only while the reciprocal transmission for circularly one. Asymmetric hybridized metamaterials are shown to satisfy this criterion. The influence from the rotation of the sample around the radiation propagation direction is discussed. A special structure design is proposed, and its characteristics are analyzed by using numerical simulation.

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

“…(1) and (2), the AT for a linearly polarized wave can be characterized using the parameter Δ, which is defined as the difference between the transmitted intensities in the two opposing propagation directions (+z and −z). Therefore, the AT parameter Δ for the x-and y-polarized wave can be defined as [11,12]:…”

“…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.…”

Using dual-band asymmetric transmission effect of 2D metamaterial to manipulate linear polarization state of electromagnetic waves

“…[13][14][15][16][17][18][19][20][21][22] One of the most effective approaches is to use chiral structures to acquire asymmetric transmission (AT) effect. [23][24][25][26][27][28] This AT effect is irrelevant to the nonreciprocity of the Faraday Effect in magnetooptical media, instead, originates from the interaction of EM radiation with the structural chirality of the two-dimension (2D) or three-dimension (3D) metamaterials. [29][30][31][32][33] Such AT phenomena can be attributed to the de Hoop reciprocity as revealed by Jones matrix formation.…”

Directive excitation of guided electromagnetic waves through polarization control

“…This interest can be extended to the EM spectrum up to optics, where microstructured media based on subwavelength-size inclusions are key to synthesize artificially designed propagation conditions [2][3][4]. Within this metamaterial context, for example, chirality has been employed to asymmetrically transmit light with circular polarizations [5,6] or linear polarizations [7][8][9]. During the last decade, some alternative wave routing concepts have been investigated through the proper design of artificial media, including, for example, active control [10] and extraordinary transmission phenomena [11].…”