Fig. 1. Architecture of elastic optical network in data centers

Fig. 2. Topology of connection requests

Fig. 3. Flow chart of dedicated-path protection method in elastic optical networks

Fig. 4. NSFNET topology

Fig. 5. USNET topology

Fig. 6. Blocking probability under NSFNET

Fig. 7. Blocking probability under USNET

Fig. 8. Spectrum resource occupancy under NSFNET

Fig. 9. Spectrum resource occupancy under USNET

Fig. 10. Redundancy rate under NSFNET

Fig. 11. Redundancy rate under USNET