Navarro-Cía Miguel, Beruete Miguel, Agrafiotis Spyros, Falcone Francisco, Sorolla Mario, Maier Stefan A
Millimeter and Terahertz Waves Laboratory, Universidad Pública de Navarra, Campus Arrosadía, 31006 Pamplona, Spain.
Opt Express. 2009 Sep 28;17(20):18184-95. doi: 10.1364/OE.17.018184.
A complementary split ring resonator (CSRR)-based metallic layer is proposed as a route to mimic surface plasmon polaritons. A numerical analysis of the textured surface is carried out and compared to previous prominent topologies such as metal mesh, slit array, hole array, and Sievenpiper mushroom surfaces, which are studied as well from a transmission line perspective. These well-documented geometries suffer from a narrowband response, alongside, in most cases, metal thickness constraint (usually of the order of lambda/4) and non-subwavelength modal size as a result of the large dimensions of the unit cell (one dimensions is at least of the order of lambda/2). All of these limitations are overcome by the proposed CSRR-based surface. Besides, a planar waveguide is proposed as a proof of the potential of this CSRR-based metallic layer for spoof surface plasmon polariton guiding. Fundamental aspects aside, the structure under study is easy to manufacture by simple PCB techniques and it is expected to provide good performance within the frequency band from GHz to THz.
提出了一种基于互补开口环谐振器（CSRR）的金属层，作为模拟表面等离激元极化激元的一种途径。对该纹理表面进行了数值分析，并与之前的一些著名拓扑结构进行了比较，如金属网、狭缝阵列、孔阵列和Sievenpiper蘑菇表面，这些也从传输线的角度进行了研究。这些有充分文献记载的几何结构存在窄带响应问题，此外，在大多数情况下，由于单元胞尺寸较大（其中一维至少为λ/2量级），存在金属厚度限制（通常为λ/4量级）和非亚波长模态尺寸问题。所提出的基于CSRR的表面克服了所有这些限制。此外，还提出了一种平面波导，以证明这种基于CSRR的金属层在引导类表面等离激元极化激元方面的潜力。除了基本方面，所研究的结构易于通过简单的印刷电路板技术制造，并且有望在从GHz到THz的频带内提供良好的性能。
