Supplemental information

computational and fabrication details, the FOM difference between 2D and quasi-3D FDTD calculations based on the symmetries of orthogonal polarizations, computational time per optimization loop for E-DeepBO and conventional GP-based BO, the full-dimensional visualization of adaptive basis regression by the DNN-BLR, the full-threshold visualization of the optimization process by PR on the E-DeepBO search dataset of the TE.