Lin, Yu ChuanYu ChuanLinChien, Yi ChiaYi ChiaChienWEN-JENG HSUEH2024-03-052024-03-052024-05-0100304018https://scholars.lib.ntu.edu.tw/handle/123456789/640273Topological slow-light in a one-dimensional conjugated topological photonic crystal (CTPhC) is presented. The study shows that extremely slow-light of 26.57 m/s group velocity and 7.52 × 10−7 s group delay are achieved in the proposed CTPhC with 20 μm thick, which is better than traditional approaches of slow-light. Results also show that there are two significant sensitive parameters for slow-light in the CTPhC. Robust and ultra-slow-light is achieved as the refractive index contrast of materials and the number of layers increases. It is worth noting that the CTPhC has a symmetric and wide operating range photonic bandgap, which has better slow-light effects than typical topological photonic crystal. It is expected that the CTPhC can provide an efficient approach to constructing robust and ultra-slow-light devices.Group delay | Group velocity | Photonic crystals | Slow-light | Superlatticesjournal article10.1016/j.optcom.2024.1303692-s2.0-85185001924https://api.elsevier.com/content/abstract/scopus_id/85185001924