Novel crosstalk, fragmentation-aware algorithms in space division multiplexed- Elastic Optical Networks (SDM-EON) with considering physical layer security

摘要

One of the newest technologies to qualify transmission capacity of optical backbone networks is Space Division Multiplexing with Elastic Optical Networks (SDM-EONs). SDM-EON has the feasibility to add flexibility to Wavelength division Multiplexing (WDM) networks. In SDM-EON, connections can be setup more efficiently than WDM networks and EON without SDM. There are challenging issues in SDM-EON as fragmentation (created due to dynamically allocating and releasing allocated bandwidth of connections over time), impairments and physical layer security vulnerabilities caused by inter-core crosstalk. In this article, we introduce three novel algorithms to resolve crosstalk and maintain physical layer security level and reduce blocking probability in SDM-EON as called Minimum Crosstalk by fragmentation per cores (Min_Cross), Minimum Fragmentation by Crosstalk per cores (Min_Frag), and Moderate fragmentation and crosstalk (Mod_Frag_Cross). We consider multi-core fibers (MCFs) in EON and study how to setup lightpaths by considering the impairments and physical layer security leaks and attacks caused by inter-core crosstalk. We investigate spectrum, and core assignment algorithms to control physical-layer security attacks in order to reduce inter-crosstalk impairments as well as reducing Blocking Probability (BP) as our performance evaluation results show.