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磁性链式光子晶体中具有基于磁表面等离激元的单向边缘态传输模式,这种单向边缘态传输模式具有抗缺陷特性,引起了越来越多的关注。本文采用多重散射法从理论上研究了直线和Zig Zag链式结构磁性光子晶体的特征能带,讨论了偏置磁场对单向边缘态能带的调谐作用,并通过传输实验验证了这两种链式结构单向传输特性的调控特性,结果表明通过调整外加偏置磁场可以对链式磁性光子晶体的单向传输频率和带宽进行调控。
Magnetic chain-based photonic crystal has a one-sided edge-state transmission mode based on magnetic surface plasmon. This unidirectional edge-state transmission mode has anti-defect characteristics, attracting more and more attention. In this paper, we use the theory of multiple scattering to theoretically study the characteristic energy bands of linear and Zig Zag chained magnetic photonic crystals, and discuss the tuning effect of the bias magnetic field on the unidirectional energy band. The experimental results show that these two The results show that the unidirectional transmission frequency and bandwidth of chain-like magnetic photonic crystal can be regulated by adjusting the bias magnetic field.