Comparison of Various Sharing Approaches in Survivable Translucent Optical Networks

Abstract

This work focuses on analysis of various sharing approaches in survivable spectrally-spatially flexible optical networks (SS-FONs), which use flexible optical signal regeneration based on transponders connected in back-to-back (B2B) configurations. Two sharing approaches, namely, spectrum sharing and transponder sharing are analyzed in the context of dynamic traffic. To tackle the considered optimization problem, we propose a new Adaptive Survivable Routing with B2B Regeneration with Spectrum and Transponder Sharing (ASRBR-STS) algorithm that allows to establish dynamic routing requests in translucent and survivable SS-FON with spectrum and transponder sharing. The simulations are conducted using two topologies: European and US. The obtained results show that the proposed algorithm outperforms other methods. Moreover, the results clearly demonstrate that spectrum and transponder sharing significantly improves the performance in terms of the network throughput (amount of served traffic), i.e., up to 55% more protected traffic can be served when compared to the non-sharing approach.