Fragmentation Coefficient (FC) conscious Routing, Core and Spectrum Allocation in SDM-EON based on MultiCore Fiber

Abstract

One of the most promising and soon-to-be-used network for increasing spectrum flexibility is Elastic Optical Networks (EON). Routing and wavelength allocation are two of the greatest issues in conventional WDM networks. The functionality of EON network is impacted by routing and spectrum allocation (RSA) issues. RSA has become a trickier operation as traffic from mobile backhaul and the data center keeps increasing. To keep up with the vast amount of information that is to be delivered, space division multiplexing (SDM) technologies like MultiCore Fiber (MCF) and MultiMode Fiber (MMF) are being thoroughly investigated. Using multicore fiber and multimode fiber, SDM technology can scale the network bandwidth. With the addition of spatial dimension, the spectrum status in SDM-EONs becomes more complicated and as a result problem of spectrum fragmentation will be more severe in SDM-EONs than in basic EONs. So the key motivation behind this study is the effective routing, spectrum, and core assignment for a potential SDMEON by controlling the fragmentation coefficient (FC) parameter. Due to the dynamic allocation of the requests and of routing constraints spectrum resource is not efficiently utilized and it gets fragmented in SDM-EON. Fragmentation which is determined on how many slots are lined up next to one another is then compared to the crosstalk (XT) threshold value. Due to the addition of fiber core and mode dimensions in the network, MCF and MMF are also challenging to address. Till now according to our knowledge, no work has been done on SDM using Fragmentation Coefficient (FC) based upon CASR and later on compared it with XT threshold. The proposed technique performs better in terms of bandwidth blocking probability (BBP) as compared to the benchmark technique [1].