Abstract
Controlling the propagation direction of polarized light is crucial for optical communications and functional optical components. However, all-dielectric on-chip technology exploiting valley photon emission in transition metal dichalcogenides with enhanced emission has yet to be fully explored. Here, we report a design for enhancing valley emission and manipulating valley photon propagation based on degenerate non-radiating anapole states. By placing circularly polarized dipoles on top of a $ C_{4} $ symmetric cross-slotted silicon disk, the rotating anapole state is excited with a Purcell factor up to two orders. In addition, the photon coupled to the preferred direction of the waveguide are about 2 times larger than that to the opposite direction. Our design could pave the way for realizing on-chip valley-dependent optical communication.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Yuebian Zhang, Zhancheng Li, Wenwei Liu, Zhi Li, Hua Cheng, Jianguo Tian, and Shuqi Chen
Opt. Lett. 46(15) 3528-3531 (2021)
Sriram Guddala, Mandeep Khatoniar, Nicholas Yama, Wenxiao Liu, Girish S. Agarwal, and Vinod M. Menon
Optica 8(1) 50-55 (2021)
Youqiao Ma, Chengkai Jiang, Kaili Sun, Bo Liu, Jinhua Li, Zhanghua Han, Xin Hu, and Yuan Ma
Opt. Lett. 46(22) 5675-5678 (2021)