Figure 2From: Resonant Photonic States in Coupled Heterostructure Photonic Crystal WaveguidesTransmission spectra for the heterostructure waveguide in the direction of photon confinement, where the central barrier width is varied to observe its effect on the coupling between the waveguides. For all three plots, the outer photonic barriers were taken as d B = 5L B and the widths of the wells were d A = 15L A . Here, the effect of the pump field was not considered. The barrier widths were varied as d C = 5L C (a),d C = 10L C (b) and d C = 15L C (c). When the waveguides are close together, strong coupling of degenerate states enhances the energy-splitting effect. As the waveguides are separated, the interaction between degenerate states diminishes, and the energy splitting cannot be resolvedBack to article page