Rodrigo C. de Freitas, J. Martins-Filho, E. C. O. Santos, C. Bastos-Filho, D. Chaves, Helder A. Pereira
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OSNR-based backup path protection algorithm with sharing limits
We present a novel shared backup path protection algorithm for all-optical networks which considers the physical layer impairments and limits for the number of times that a backup wavelength can be used to protect a set of active lightpaths. More-over, we propose a strategy to evaluate the trade-off between the vulnerability ratio, protection ratio and blocking probability using the dominance criterion. Our proposal outperformed three other well known approaches presented in the literature.