Figure 3.

Several transmission spectra from a PDQW heterostructure with constant outer barrier thickness (d_B = 10L_B) and well width (d_A = 10L_A), while the inter-well separation (d_W) is varied. The solid red curve, dashed blue curve, and dot-dashed black curve correspond to d_W = 5L_B, 10L_B, and 20L_B, respectively. When the photonic wells are close together, strong inter-well coupling enhances the energy-splitting effect. As the wells are separated, the interaction between degenerate states diminishes, and the energy splitting cannot be resolved