… optical networks. In this tutorial paper, we explore routing and spectrum allocation in elastic
optical networks… We begin with the basic concept of the elastic optical network and its unique …

… In an elastic optical channel, spectrum slots are assigned to the dynamically … spectrum
allocation policy called Exact-Fit and compare it with three different existing spectrum allocation …

… In the following, we propose algorithms for Routing and Spectrum Allocation (RSA) in OFDM
optical networks. We assume that physical layer impairments (PLI) are not significant (due …

… Output: The route over the flexgrid optical network and the spectrum allocation of every
transported demand. Objective: Minimize the amount of rejected bandwidth. Note that from the …

… networking that can provide high flexibility and scalability in spectrum allocation and data …
In fact, EON can allocate the available resources in a network according to users' demands. …

… In this paper, we have concentrated on the problem of routing and spectrum allocation in
survivable elastic optical networks. The network protection is provided by the use of the …

… 1) In Section II, we define a general spectrum allocation framework for time-varying traffic
demands in FG-ON. Namely, we discern three SA schemes of different levels of elasticity: a …

… for RSA for optical networks with special structures, such as binary trees and rings. In this
paper we study RSA for networks with arbitrary structure as well as the networks with specific …

… spectrum allocation problems separately. Without loss of generality, we include the spectrum
… We used the FF heuristic for spectrum allocation. As a consequence of connection arrivals …

… Spectrum Allocation (RSA) algorithm that takes into account these blocking models to allocate
routes and reference frequencies to connections so as to minimize the network blocking. …