We design cylindrical multilayer structures characterized by anisotropy and topological features. This provides a new approach to tailor electromagnetic fields into desired patterns with orbital angular momentum in cylindrical geometries as ring resonators and fibers. We use transformation optics to deal with anisotropic circular structures, and rigorously define the edge states. The resulting topologically protected high-localized modes, at the core/cladding interface, with angular momentum may trigger the developments of new disorder-robust devices and high Q-microcavities for applications in light transmission, quantum technology, nonlinear optics, TeraHertz devices, and biophysical sensors.

中文翻译：

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各向异性圆形拓扑结构

我们设计具有各向异性和拓扑特征的圆柱形多层结构。这提供了一种新方法，可以将电磁场调整为具有圆柱几何形状的轨道角动量的所需模式，作为环形谐振器和光纤。我们使用变换光学来处理各向异性的圆形结构，并严格定义边缘状态。在纤芯/包层界面处产生具有角动量的拓扑受保护的高局部化模式，可能会触发新的无序器件和高Q微腔的开发，这些器件将用于光传输，量子技术，非线性光学，TeraHertz器件和生物物理传感器。