With the ever-increasing traffic demands, the infrastructure of current 10 Gbit/s optical
network needs to be enhanced. The legacy infrastructure can be enhanced not only by …

In all-optical WDM networks, feasibility of a lightpath are determined by physical layer
impairment accumulation. Physical layer impairment-aware routing and wavelength …

We consider the energy minimization problem in optical networks from an algorithmic
perspective. Our objective is to plan optical WDM networks so as to minimize the energy …

We evaluate and compare the power consumption and the number of required slots
(footprint) of fixed and flexible transport nodes. The node architecture is assumed to …

We present a generic step-by-step methodology for evaluating the total cost of migrating
from a capacity-exhausted WDM network to different upgraded alternatives. The presented …

In the literature, three-stage switching networks have been considered for nodes in elastic
optical networks, where switches with spectrum conversion capability are placed in the first …

Dynamic optical networking allows operators to effectively maximize the capacity of their
physical infrastructure and cope with the rapid growth rates of the Internet traffic. In the …

This paper proposes a methodology to evaluate the total cost (CapEx and OpEx) of a
migration process from a capacity-exhausted static WDM network to different capacity …

This paper examines the Cognitive Heterogeneous Reconfigurable Optical Network
architecture from a techno-economic perspective. In order to monetize the benefits stemming …

We propose in this paper two heuristic strategies to solve the regenerator placement
problem (RPP) in translucent networks under dynamic traffic. The heuristics are based on …