Ultra-slow light and complete transmission properties in one-dimensional Cantor photonic crystals are presented. In contrast to traditional dielectric photonic crystals, the proposed structure has large group delay, slower group velocity, and a high quality factor within the same layers and materials. This study shows that larger than 1 μs group delay and slower than 1 m/s group velocity are achieved in the fifth-order Cantor photonic crystal with 52.75 μm length. This ultra-slow-light structure is very promising for application in advanced slow-light devices. A high quality factor of ${10}^9$ and multiband filters with complete transmission can also be obtained by using this approach.

中文翻译：

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一维Cantor光子晶体中的超慢光

提出了一维Cantor光子晶体中的超慢光和完整的传输特性。与传统的介电光子晶体相反，所提出的结构在相同的层和材料内具有较大的群延迟，较慢的群速度和较高的品质因数。这项研究表明，在长度为52.75μm的五阶Cantor光子晶体中，实现了大于1μs的群延迟和小于1 m / s的群速度。这种超慢光结构对于在先进的慢光设备中的应用非常有前途。高品质因数${10}^9$ 使用这种方法也可以得到传输完全的多频带滤波器。