论文标题
Babinet融合结构用于实施伪冬利波导
Babinet-Complementary Structures for Implementation of Pseudospin-Polarized Waveguides
论文作者
论文摘要
在这项工作中，我们证明了一种定理，该定理陈述了互补结构本征征之间的电磁（EM）二元性对应关系，可在不同类型的波导中诱导反向传播的自旋偏置状态，在这些波导中，镜像反射对称性保留在一个（或更多）派遣的平面周围。与光子拓扑绝缘子（PTI）相似，它支持拓扑上的非平凡方向依赖性自旋极化，我们的假柔性偏振系统支持表现出鲁棒性的单向状态，但是，我们结构的优势在于它们可以简单地使用人工双重阻碍表面在极为宽的频段中实现。因此，无需散装电磁材料。基于我们的理论，可以使用Babinet互补结构来实现伪旋转波导的概念，从微波炉到THZ制度。我们研究了微波处理中的各种单向波导和自旋过滤特征。
In this work, we prove a theorem that states the electromagnetic (EM) duality correspondence between eigenmodes of complementary structures, induces counterpropagating spin-polarized states in different types of waveguides where mirror reflection symmetries are preserved around one (or more) arbitrary plane(s). Similar to photonic topological insulators (PTIs), which support topologically non-trivial direction-dependent spin polarizations, our pseudospin-polarized systems support one-way states that manifest robustness, however, the advantage of our structures is that they can be implemented in extremely broad bandwidth simply using artificial dual impedance surfaces. Consequently, there is no need to bulk electromagnetic materials. On the basis of our theory, the concept of the pseudospin-polarized waveguide can be realized using Babinet complementary structures, ranging from microwave to THz regime. We design and develop various unidirectional waveguides and spin-filtered feature in the microwave regime is investigated.
