Fig. 1. Schematic diagram of photodetector

Fig. 2. Schematic diagram of graphene current simulation

Fig. 3. Linear polarization response

Fig. 4. Scanning image of circular polarization response

Fig. 5. Weighted sum of linear and circular polarization responses

Fig. 6. Schematic diagram of neural network solving

Fig. 7. Neural network solving flowchart

Fig. 8. Learning curve of neural network

Fig. 9. Schematic diagram of minimum enclosing sphere for Stokes parameters