Yuan Hongyi, Liu Zhouhui, Wei Maoliang, Lin Hongtao, Hu Xiaoyong, Lu Cuicui
Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education, Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 100081, China.
State Key Laboratory of Modern Optical Instrumentation, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
Micromachines (Basel). 2021 Nov 30;12(12):1506. doi: 10.3390/mi12121506.
The topological nanophotonic wavelength router, which can steer light with different wavelength signals into different topological channels, plays a key role in optical information processing. However, no effective method has been found to realize such a topological nanophotonic device. Here, an on-chip topological nanophotonic wavelength router working in an optical telecom band is designed based on a topology optimization algorithm and experimentally demonstrated. Valley photonic crystal is used to provide a topological state in the optical telecom band. The measured topological wavelength router has narrow signal peaks and is easy for integration. This work offers an efficient scheme for the realization of topological devices and lays a foundation for the future application of topological photonics.
拓扑纳米光子波长路由器能够将携带不同波长信号的光引导到不同的拓扑通道中，在光信息处理中起着关键作用。然而，尚未找到实现这种拓扑纳米光子器件的有效方法。在此，基于拓扑优化算法设计了一种工作在光通信波段的片上拓扑纳米光子波长路由器，并进行了实验验证。谷光子晶体用于在光通信波段提供拓扑态。所测量的拓扑波长路由器具有窄信号峰且易于集成。这项工作为实现拓扑器件提供了一种有效方案，并为拓扑光子学的未来应用奠定了基础。
