High-reflectivity high-contrast grating focusing reflector on silicon-on-insulator wafer
Fang Wenjing1, 2, Huang Yongqing1, 2, †, 
, Duan Xiaofeng1, 2, Liu Kai1, 2, Fei Jiarui1, 2, Ren Xiaomin1, 2
, Duan Xiaofeng1, 2, Liu Kai1, 2, Fei Jiarui1, 2, Ren Xiaomin1, 2 Structure layout and parameters. (a) Schematic diagram of the HCG structure proposed under TM polarized illumination. (b) Schematic of the investigated non-periodic HCGs with a parabolic phase response.
