Broadband dispersionless polarization rotation with composite chiral metamaterials

2015/11/21 by Kun Song, Changlin Ding, Song, Kun +7
Engineering · Materials Science · #Advanced Antenna and Metasurface Technologies #Antenna Design and Analysis #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optics (physics.optics)

paper · pdf · doi:10.48550/arxiv.1511.06878

openalex publication_date 2015/11/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We propose a planar composite chiral metamaterial (CCMM) by symmetrically inserting a metallic mesh between two layers of conjugated gammadion resonators. As the elaborate CCMM operates in the frequency region of off-resonance, it therefore presents loss-less and dispersion-free features. It can achieve flat polarization rotation simultaneously accompanied with high transmission and extremely low ellipticity in a broad bandwidth. In the meanwhile, this intriguing CCMM shows more superiorities in polarization rotation power and operating bandwidth than the pure chiral metamaterial just composed of conjugated gammadions. Due to the fascinating properties, the proposed CCMM is greatly appealing for controlling the polarization state of the electromagnetic waves.

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