Topological Rainbow Trapping with Expanded Bandwidth in Valley Photonic Crystals

Topological Rainbow Trapping with Expanded Bandwidth in Valley Photonic Crystals

We introduce a novel approach to achieve broadband rainbow trapping in a 2D photonic crystal (PC) platform. By exploiting the concept of valley PCs, we engineer a structure that supports robust topological edge states. A carefully designed rotational angle gradient along the edge state path induces...

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Bibliographic Details
Main Authors: Sayed El. Soliman, Israa Abood, Naglaa Abdel All, Chii-Chang Chen
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Photonics
Subjects:
photonic crystals
topological states
broadband
rainbow tapping
Online Access:https://www.mdpi.com/2304-6732/12/5/487
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