Topological materials have been at the forefront of research across various fields of physics in hopes of harnessing properties such as scatter-free transport due to protection from defects and disorder. Photonic systems are ideal test beds for topological models and seek to profit from the idea of topological robustness for applications. Recent progress in 3D-printing of microscopic structures has allowed for a range of implementations of topological systems. We review recent work on topological models realized particularly in photonic crystals and waveguide arrays fabricated by 3D micro-printing. The opportunities that this technique provides are a result of its facility to tune the refractive index, compatibility with infiltration methods, and its ability to fabricate a wide range of flexible geometries.

中文翻译：

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3D 微打印系统中的拓扑光子学

拓扑材料一直处于各个物理领域研究的前沿，希望利用诸如无散射传输等特性来防止缺陷和无序。光子系统是拓扑模型的理想测试平台，并寻求从应用的拓扑稳健性理念中获益。微观结构 3D 打印的最新进展允许拓扑系统的一系列实现。我们回顾了最近在通过 3D 微打印制造的光子晶体和波导阵列中实现的拓扑模型的最新工作。这种技术提供的机会是由于它可以方便地调整折射率、与渗透方法的兼容性以及制造各种灵活几何形状的能力。