We propose an all-dielectric metamaterial composed of bi-layered silicon structures orthogonally arranged on the sandwiched silica substrate, which exhibits giant dual-band asymmetric transmission of linearly polarized wave in the near-infrared regime, with one band working for the x-polarization and the other one for y-polarization. The dual-band AT phenomenon is explained by the distributions of electric field. In addition, the affection of the geometric parameters and incident angles to the AT parameters has been analyzed. Such an AT metamaterial has potential applications in polarization converters, switches and integrated photonic circuits.

中文翻译：

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基于近红外波段全介电超材料的巨型双波段非对称传输

我们提出了一种全介电超材料，由正交排列在夹层二氧化硅衬底上的双层硅结构组成，在近红外区域表现出巨大的线性偏振波双波段不对称传输，其中一个波段用于x偏振另一个用于y极化。双波段 AT 现象可以用电场分布来解释。此外，还分析了几何参数和入射角对AT参数的影响。这种 AT 超材料在偏振转换器、开关和集成光子电路中具有潜在的应用。