超材料对电磁波的极化转换及不对称传输研究进展

Research Progress in Polarization Conversion and Asymmetric Transmission of Electromagnetic Waves Using Metamaterials

超材料新颖的电磁特性使它在许多领域都具有潜在的应用价值,如极化旋转器、类二极管等光子器件。综述了超材料中电磁波的极化转换的研究进展,包括线极化波之间、线极化波和圆极化波之间、圆极化波之间的相互极化转换,以及超材料的线极化波和圆极化波的不对称传输,并阐明了利用类Fabry-Perot谐振腔增强线极化波和圆极化波的不对称传输效应的机制。

Owing to their novel electromagnetic properties, metamaterials have some potential applications in many fields, such as polarized rotators, diode-like devices and other photonics devices. The polarization conversion between linear-to-linear, li- near-to-circular, circular-to-circular polarization waves and the asymmetric transmission in metamaterials are summarized. The mec- hanism of enhancing the asymmetric transmission of linear and circular polarization waves by using Fabry-Perot-like resonance is also expounded.