Reconfigurable nested photonic topological loops

被引:4
作者
Li, Xiaoxue [1 ]
Rui, Guanghao [1 ]
Cui, Yiping [1 ]
Gu, Bing [1 ,2 ]
机构
[1] Southeast Univ, Adv Photon Ctr, Nanjing 210096, Peoples R China
[2] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China
基金
中国国家自然科学基金;
关键词
topological edge states; unidirectional propagation; loops; resonance; reconfigurability;
D O I
10.3788/COL202220.061301
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Photonic structures with topological edge states and resonance loops are both important in optical communication systems, but they are usually two separate structures. In order to obtain a photonic system combining properties from both, we design multiple-layer nested photonic topological structures. The nested topological loops not only have topological protection immune to structural disorder and defects, but also possess both the properties of unidirectional propagation and loop resonance. Through mode analysis and simulations, we find that the transport can form diverse circulation loops. Each loop has its own resonance frequencies and can be solely excited in the nested layered structure through choosing its resonance frequencies. As a result, this work shows great application prospects in the area of reconfigurable photonic circuits.
引用
收藏
页数:6
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