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arXiv 2005.12421physics.opticsphysics.app-ph
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光子晶体光纤的混合拓扑导引机制

Hybrid topological guiding mechanisms for photonic crystal fibers

Mehul P. Makwana, Richard Wiltshaw, Sébastien Guenneau, Richard V. Craster

摘要:

我们创建混合拓扑光子局域化的光引入的概念,从领域的拓扑物质的光子晶体光纤阵列。S偏振斜向传播的电磁波由六边形和正方形晶格拓扑系统沿无限导电纤维阵列引导。该理论利用完美的周期性阵列,在频率空间中,有间隙的狄拉克锥产生带隙,由局部充满非零局部拓扑量的明显山谷划分。这些断裂的晶体感应阻带允许沿着晶体光纤轴局部引导电磁边缘波。有限元模拟,辅以渐近技术,证明了所提出的设计的有效性,在有限阵列中的本地化能量在一个强大的方式。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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