Abstract
We proposed an effective approach to enlarge the slow light bandwidth and normalized-delay-bandwidth product in an optimized moiré lattice-based photonic crystal waveguide that exhibits intrinsic mid-band characteristics. A flatband corresponding to a nearly constant group index of 34 over a wide bandwidth of 82 nm centered at 1550 nm with near-zero group velocity dispersion was achieved. A large normalized-delay-bandwidth product of 0.5712 with a relative dispersion of 0.114%/µm was obtained, which is a significant improvement if compared with previous results. Our results indicate that the photonic moiré lattice waveguide could advance slow light applications.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Ibrahim Nasidi, Ran Hao, SangZhong Jin, and Erping Li
Appl. Opt. 62(10) 2651-2655 (2023)
Hong Wu, Shengkang Han, Feng Li, and Zhihong Yang
Appl. Opt. 59(3) 642-647 (2020)
Ran Hao, Eric Cassan, Xavier Le Roux, Dingshan Gao, Van Do Khanh, Laurent Vivien, Delphine Marris-Morini, and Xinliang Zhang
Opt. Express 18(16) 16309-16319 (2010)