分路器
小型化
光子学
分束器
稳健性(进化)
拓扑(电路)
带宽(计算)
光子晶体
计算机科学
微波食品加热
物理
光学
电信
纳米技术
材料科学
工程类
激光器
电气工程
基因
化学
生物化学
作者
Jiajun Ma,Chunmei Ouyang,Yuting Yang,Hongyi Li,Li Niu,Xinyue Qian,Liu Yi,Baocheng Yang,Quan Xu,Yanfeng Li,Liyuan Liu,Zhen Tian,Jianqiang Gu,Jiaguang Han,Weili Zhang
摘要
Topological photonics has made great progress from physical concept verification to new technical applications, and valley topological photonic crystal (TPCs) are one of the most important candidates for future applications in functional devices because of large bandwidth and lossless optical transport. However, due to the limitations of the design method and structure arrangement, the multichannel valley topological beam splitter (BS) has not yet been much explored. Here, we reveal the different robustness of four types of domain walls in valley TPCs. Benefiting from the differences in domain walls, we numerically present and experimentally demonstrate a highly integrated multichannel valley topological BS in the microwave regime. Compared with traditional BSs, it has the advantages of being more robust and compact and having more output ports and higher integration. The reported multichannel topological BS opens an avenue to engineer the flow of light and offers effective design approaches for integrated photonic device miniaturization.
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