论文标题
拓扑浮雕绝缘子中的Bragg孤子
Bragg solitons in topological Floquet insulators
论文作者
论文摘要
我们考虑了一个拓扑浮雕绝缘子，该绝缘子由两个具有相反螺旋性的相同波导的蜂窝阵列组成。阵列之间的界面支持两个不同的拓扑边缘状态，它们可以通过其他弱纵向屈光指标调制，其周期大于螺旋周期。在Kerr非线性的情况下，这种耦合边缘状态可实现拓扑bragg soliton。提出了此类孤子的理论和示例。
We consider a topological Floquet insulator consisting of two honeycomb arrays of identical waveguides having opposite helicities. The interface between the arrays supports two distinct topological edge states, which can be resonantly coupled by additional weak longitudinal refractive index modulation with a period larger than the helix period. In the presence of Kerr nonlinearity, such coupled edge states enable topological Bragg solitons. Theory and examples of such solitons are presented.
