Impairment-aware routing and wavelength assignment in translucent networks: state of the art
IEEE Communications Magazine
A cross-layer ILP formulation for finding p-cycles in all-optical networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Evaluation of link protection schemes in physically impaired optical networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Ant based hyper heuristic for physical impairment aware routing and wavelength assignment
Sarnoff'10 Proceedings of the 33rd IEEE conference on Sarnoff
Adaptive wavelength allocation in GMPLS controlled optical network
Sarnoff'10 Proceedings of the 33rd IEEE conference on Sarnoff
Photonic Network Communications
EvoCOMNET'10 Proceedings of the 2010 international conference on Applications of Evolutionary Computation - Volume Part II
A distributed impairment aware QoS framework for all-optical networks
Optical Switching and Networking
Optical Switching and Networking
FWM aware evolutionary programming algorithm for transparent optical networks
Photonic Network Communications
Dynamic lightpath establishment considering four-wave mixing in multifiber WDM networks
Photonic Network Communications
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In WDM all-optical networks where electrical regeneration is not available, physical impairments due to propagation in the fibers, amplifier noise, and leaks between channels and in the switches cannot be removed at the physical layer. These effects cause calls, especially between physically distant nodes, to be rejected because they cannot meet minimum Quality of Transmission (QoT) requirements, as measured by signal bit-error rates. It is possible to mitigate physical layer effects at the network layer using appropriate Routing and Wavelength Assignment (RWA) algorithms. We present new RWA algorithms which account for physical impairments in their design and increase QoT and fairness among users without sacrificing low blocking probabilities in metropolitan-sized networks. We also present RWA algorithms that can sharply decrease blocking probabilities in regional-sized networks using optional channel coding. All algorithms are evaluated through simulation in realistic scenarios and shown to successfully mitigate crosstalk effects and to perform better in terms of QoT and network access fairness than traditional algorithms.