Fig. 1. Schematic diagram of dual-channel chaotic optical communication using two parallel reservoir computers based on two polarization components of the optically pumped spin-VCSEL

Fig. 2. PSD distributions of the x-PC₁ and y-PC₁ from the VCSEL₁ output

Fig. 3. Trajectory of chaotic sequence prediction

Fig. 4. Dependence of NMSE_xand NMSE_y on the sampling period T₀

Fig. 5. Dependence of NMSE_x and NMSE_y on the virtual node interval θ

Fig. 6. Maps of the evolutions of the correlation coefficients（ρ_x，ρ_y）in different parameter spaces

Fig. 7. Dependences of ρ_x and ρ_y on different parameters

Fig. 8. CDET-score chart under different signal-to-noise ratio

Fig. 9. Temporal traces and constellations of the encoded，chaos-masked，decoded 16 QAM messages in the system

Fig. 10. Dependences of the BERs of the decoded messages $m_x^{\text{'}}(n)$ and $m_y^{\text{'}}(n)$ on different parameters

Fig. 11. Chaos synchronizations and eye-diagrams using two parallel reservoirs trained by different chaos-masked messages in the VCSEL₁ with different parameter-combinations

Fig. 12. Chaos synchronizations and eye-diagrams using two parallel reservoirs trained by the chaos -masked messages