Figure 4
From: Fano resonance in anodic aluminum oxide based photonic crystals

Simulation results of the PBG at different wavelengths.
Simulations show that the PBG exhibits a Fano type profile. Filling refractive indexes of the air pore for image (a–f) are 1.0000, 1.0600, 1.1030, 1.1575, 1.1740 and 1.1760, respectively.