Fig. 1. Logical architecture of satellite optical networks based on SDN

Fig. 2. Satellite optical network routing algorithm based on SDN

Fig. 3. Routing mechanism based on virtual topology

Fig. 4. Simulation model of satellite optical network based on SDN

Fig. 5. Network average delay

Fig. 6. Network average delay jitter

Fig. 7. Network average packet loss rate

Fig. 8. Network wavelength utilization rate

Fig. 9. Network blocking rate