Ellipse-ring-shaped-hole photonic crystal waveguide

This work proposes a new photonic crystal waveguide called ellipse-ring-shaped-hole (ERPCW) for optical buffering applications. The conventional circle-shaped holes of PCWs are substituted with ellipse-shaped rings in ERPCW. Fifteen structural parameters are identified for designing the proposed PCW. In order to design this structure, SoMIR framework is employed. The calculation results prove that the proposed ERPCW is able to show 42% and 12% improved ΔλΔλ and NDBP compared to the best structure in the literature. The finite difference time domain (FDTD) method is eventually employed to confirm the performance of ERPCW.