Penciu R S, Aydin K, Kafesaki M, Koschny Th, Ozbay E, Economou E N, Soukoulis C M
Foundation for Research and Technology, Hellas, Institute of Electronic Structure and Laser, Heraklion, Crete, Greece.
Opt Express. 2008 Oct 27;16(22):18131-44. doi: 10.1364/oe.16.018131.
We present a systematic numerical study, validated by accompanied experimental data, of individual and coupled split ring resonators (SRRs) of a single rectangular ring with one, two and four gaps. We discuss the behavior of the magnetic resonance frequency, the magnetic field and the currents in the SRRs, as one goes from a single SRR to strongly interacting SRR pairs in the SRR plane. We show that coupling of the SRRs along the E direction results to shift of the magnetic resonance frequency to lower or higher values, depending on the capacitive or inductive nature of the coupling. Strong SRR coupling along propagation direction usually results to splitting of the single SRR resonance into two distinct resonances, associated with peculiar field and current distributions.
我们通过伴随的实验数据验证，对具有一个、两个和四个间隙的单个矩形环的单个和耦合分裂环谐振器（SRR）进行了系统的数值研究。我们讨论了从单个SRR到SRR平面中强相互作用的SRR对时，SRR中的磁共振频率、磁场和电流的行为。我们表明，SRR沿E方向的耦合会导致磁共振频率根据耦合的电容性或电感性性质向更低或更高的值移动。沿传播方向的强SRR耦合通常会导致单个SRR共振分裂为两个不同的共振，这与特殊的场和电流分布相关。
