Limited Range Wavelength Converter Based PLI-Signal Quality RWA (PLI-SQRWA) Algorithm for Translucent Optical Wavelength Division Multiplexed (WDM) Networks

Abstract

This article formulates a framework that solves the offline physical layer impairment-routing and wavelength assignment (PLI-RWA) issue in translucent wavelength division multiplexed (WDM) optical networks. For network design, the PLI-Signal Quality Aware RWA (PLI-SQARWA) algorithm is employed that (a) guarantees zero blocking due to signal degradation and wavelength contention and (b) minimizes the total required number of regenerators and all-optical wavelength converters (AOWCs). Further, in view of a latency efficient technology capable of delivering a cost effective implementation suitable for large scale deployment, our previously proposed novel electro-optical hybrid translucent nodes are deployed within the network. Unlike our previous studies which assumed the use of full range wavelength converter (FRWC) within the hybrid node, in the current study, we use limited range wavelength converter (LRWC) to resolve wavelength conflicts. For network equipped with hybrid nodes and employing PLI-SQARWA, performance results, in presence of FRWCs and LRWCs, respectively are presented.

A Survey on Next-Generation Mixed Line Rate (MLR) and Energy-Driven Wavelength-Division Multiplexed (WDM) Optical Networks

“…Considering that the aforementioned studies assumed the use of full-range wavelength converters (FRWCs), authors in [39] extended their previous works by implementing the PLI-SQARWA algorithm for network design, considering the deployment of the practical limited-range wavelength converters (LRWCs) within the network. For network equipped with hybrid nodes and employing PLI-SQARWA, performance results, in presence of both, FRWCs and LRWCs, respectively, are presented.…”