Abstract
A honeycomb Floquet lattice with helically rotating waveguides and an interface separating two counter-propagating subdomains is analyzed. Two topologically protected localized waves propagate unidirectionally along the interface. Switching can occur when these interface modes reach the edge of the lattice and the light splits into waves traveling in two opposite directions. The incoming mode, traveling along the interface, can be adjusted and routed entirely or partially along either lattice edge with the switching direction based on a suitable mixing of the interface modes.
© 2024 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Tae Bin Kim, Hanfa Song, Parker Huculak, and Vien Van
Opt. Lett. 49(3) 634-637 (2024)
Yiying Liu, Xing Hong, Shouqi Zhang, Jixin Li, Song Han, Jin Tao, and Yongquan Zeng
Opt. Lett. 49(2) 242-245 (2024)
Hua Zhong, Yaroslav V. Kartashov, Yiqi Zhang, Daohong Song, Yanpeng Zhang, Fuli Li, and Zhigang Chen
Opt. Lett. 44(13) 3342-3345 (2019)