Figure 3.

Several transmission spectra from a PDQW heterostructure with constant outer barrier thickness (dB = 10LB) and well width (dA = 10LA), while the inter-well separation (dW) is varied. The solid red curve, dashed blue curve, and dot-dashed black curve correspond to dW = 5LB, 10LB, and 20LB, 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

Cox and Singh Nanoscale Research Letters 2010 5:484-488   doi:10.1007/s11671-010-9546-9