Composite photonic lattice with a broad channel to sustain topological interface states

被引:0
|
作者
Xiang, Anli [1 ]
Zhang, Zhuohang [1 ]
Jiang, Tao [1 ]
Wu, Gaofeng [1 ]
Han, Lu [1 ]
Cai, Yangjian [2 ,3 ]
机构
[1] Northwest Univ, Sch Phys, Xian 710079, Peoples R China
[2] Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Sch Phys & Elect, Jinan 250014, Peoples R China
[3] Shandong Normal Univ, Sch Phys & Elect, Shandong Prov Key Lab Opt & Photon Devices, Jinan 250014, Peoples R China
来源
OPTICS EXPRESS | 2024年 / 32卷 / 15期
基金
中国国家自然科学基金;
关键词
Optical lattices - Photonic devices - Photonics - Topology;
D O I
10.1364/OE.526154
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In the field of topological photonics, one goal is to seek specialized structures with topological protection that can support the stable propagation of light. We have designed a topological configuration featuring a broad channel to sustain edge or interface states. The topological properties are elucidated by analyzing the energy spectrum, eigenstates, and winding numbers. Furthermore, the propagation characteristics of light within our structure are examined through the computation of intensities derived from the coupled mode equations. Our findings reveal that the structure is capable of confining light to the central region, facilitating stable and robust propagation for large-sized beams. Additionally, simulations conducted using commercial software have substantiated the theoretical analysis. Our finding may have significant implications for the modulation of structured light and the development of photonic devices with wide channel capabilities.
引用
收藏
页码:26082 / 26093
页数:12
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