Keywords: Cost evaluation Elastic optical networks Energy efficiency Flexible-grid networks Flexible rate transponders Optical OFDM Protection schemes Routing and wavelength assignment Routing Modulation level and spectrum allocation a b s t r a c t The ever-increasing Internet traffic demand introduces new challenges for telecommunications carriers.… (More)
— We have compared the total cost of an innovative elastic network with respect to the conventional WDM ones operating in realistic network scenarios. The results give an insight of the cost benefits that can be obtained with an elastic OFDM-based network for the operation of future optical transport networks with different protection schemes.
—In this paper we evaluate the potential of Quality of Protection (QoP) schemes to improve the energy efficiency in optical transport networks. Different levels of flexibility, both in the digital and optical domains, are considered for simulations over a nationwide reference network model. Increasing power savings are achieved as long as the flexibility… (More)