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Bandstop Mechanism of Light Scattering from Morpho Butterfly's Wing

The bandstop of optical scattering from a special photonic crystal-the microstructure of Morpho butterfly's wing is investigated in detail in this paper. Firstly, the bandstop characteristic of light scattering from the microstructure of Morpho butterfly's wing is investigated with simplified geometry model and finite difference time domain (FDTD) method. Furthermore, the effects of structural parameters on the bandstop characteristic are studied in detail, and the mechanism of the scattering is explained by photonic crystal theory. Numerical results presented will be benefit for the bandstop spatial filter design in the future.