Figure 2
From: Coupling the normal incident light into waveguide modes of DBR mirrors via a diffraction grating
(a) The schematic picture of the DBR mirror with a Au grating. (b) The top-view SEM image of the grating. The scale bar is 400 nm. (c) The normalized reflection spectrum of TE modes of the DBR mirror with a grating. (d) The numerically calculated reflection spectrum with 7.5 pairs DBR (blue) and 6.5 pairs DBR (orange), respectively.
