Photonic structure with selective absorption performance and emission control ability are widely applied in many fields.In this work,a design of multilayer photonic structure including two phase-changing materials is presented.Firstly,the spectral reflectivity of the structure is calculated by FEM method,and a dataset is established to train a ANN model.Finally,the multi-level dynamic spectral selectivity of the photonic structure combined with phase-changing material VO2 and GST is demonstrated.The results show that when the structural parameters are d1=0.1 μm and d2=0.3μm,the calculation time of the ANN model is 1.5 s,which saves the calculation time.The four modes of this photonic structure exhibit different spectral selective absorption.This work provides an idea of multi-level dynamic control for spectral selectivity.
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