Reconfigurable nested photonic topological loops  

作　　者：Xiaoxue Li Guanghao Rui Yiping Cui Bing Gu 李小雪;芮光浩;崔一平;顾兵(Advanced Photonics Center,Southeast University,Nanjing 210096,China;Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China)

机构地区：[1]Advanced Photonics Center,Southeast University,Nanjing 210096,China [2]Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China

出　　处：《Chinese Optics Letters》2022年第6期19-24,共6页中国光学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.11774055 and 12074066)。

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.

关 键 词：topological edge states unidirectional propagation LOOPS resonance RECONFIGURABILITY 

分 类 号：O43[机械工程—光学工程]