Opt Lett. 2013 Dec 15;38(24):5232-5. doi: 10.1364/OL.38.005232.
We show that optical Tamm states (OTSs) with nonreciprocal dispersion can be formed at the boundary separating two different magnetophotonic crystals magnetized in the Voigt geometry. At the frequencies of the Tamm states, one-way optical tunneling can be achieved. The nonreciprocity features of OTSs originate from the simultaneous violation of reciprocity, time-reversal, and all related spatial symmetries in the system. Our predictions are confirmed by the nonreciprocal dispersion of interface modes, unidirectional transmission spectra, and field distributions for our system. Such theoretical results may provide a mechanism to create compact optical isolators.
我们证明，在两种不同的磁光晶体的边界处，可以形成具有非互易色散的光学太赫兹态（OTS）。在 Tamm 态的频率下，可以实现单向光隧穿。OTS 的非互易特性源于系统中同时违反了互易性、时间反演和所有相关的空间对称性。我们的预测得到了界面模式的非互易色散、单向传输谱和系统场分布的证实。这些理论结果可能为创建紧凑型光隔离器提供了一种机制。
