Perspective on the topological rainbow

Sayed Elshahat, Chenyang Wang, Hongyu Zhang, Cuicui Lu*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

25 引用 (Scopus)

摘要

Topological photonics provides a robust platform for the study of nanophotonic devices. The topological rainbow can be used to separate, slow, and trap topological photonic states of different frequencies at different positions. Although numerous reports have investigated the construction of traditional rainbow devices, limited methods have been proposed to realize topological rainbow phenomena and devices. In this Perspective, we provide an overview of the basic concept and mechanisms of rainbow trapping. A topological rainbow is discussed in terms of the implementation of synthetic dimensions. Additionally, recent advances of the topological rainbow are presented for elastic and acoustic waves. We introduce current physical methods of realizing the topological rainbow and discuss potential applications in physics and engineering.

源语言英语
文章编号230505
期刊Applied Physics Letters
119
23
DOI
出版状态已出版 - 6 12月 2021

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