论文标题
光子晶体纤维的混合拓扑指南机制
Hybrid topological guiding mechanisms for photonic crystal fibers
论文作者
论文摘要
我们通过从拓扑物质到光子晶体纤维阵列的概念引入概念来创建光的混合拓扑光学定位。 S偏振倾斜的电磁波由六角形和正方形的晶格拓扑系统沿无限传导的纤维引导。该理论利用了完美的周期阵列，在频率空间中，dirac锥体会产生带隙，该阵列被明显的山谷划分，并在本地充满了非零的局部拓扑数量。这些断裂的对称性诱导的停止带允许沿晶体纤维轴的电磁边波进行局部引导。有限元模拟以渐近技术的补充，证明了在有限阵列中以稳健方式以有限阵列的局部能量设计的有效性。
We create hybrid topological-photonic localisation of light by introducing concepts from the field of topological matter to that of photonic crystal fiber arrays. S-polarized obliquely propagating electromagnetic waves are guided by hexagonal, and square, lattice topological systems along an array of infinitely conducting fibers. The theory utilises perfectly periodic arrays that, in frequency space, have gapped Dirac cones producing band gaps demarcated by pronounced valleys locally imbued with a nonzero local topological quantity. These broken symmetry-induced stop-bands allow for localised guidance of electromagnetic edge-waves along the crystal fiber axis. Finite element simulations, complemented by asymptotic techniques, demonstrate the effectiveness of the proposed designs for localising energy in finite arrays in a robust manner.
