A resilient star-ring optical broadcast-and-select network with a centralized multi-carrier light source

Abstract

This article presents a resilient star-ring optical broadcast-and-select network with a centralized multi-carrier light source (C-MCLS). It consists of a star part network and a ring part network. Optical carriers generated by the C-MCLS are broadcast to all network nodes, which select and utilize them for data transmission. Optical carrier distribution as well as data transmission and receiving are performed in the star part network. The ring part network is for fiber failure recovery. The network resilience property enables the design of a fast distributed failure recovery scheme to deal with single and multiple fiber failures. We introduce a fiber connection automatic protection switching (FC-APS) architecture that only consists of optical couplers and 1×2 optical switches for each network node. Based on the FC-APS architecture, we design a distributed failure recovery scheme to recover the carriers and data affected by fiber failures. The fiber failure detection and failure recovery operations are performed by each network node independently only using its local information. We evaluate the recovery time of the distributed failure recovery scheme compared with that of the centralized one. Numerical results show that the distributed scheme greatly reduces the recovery time compared to the centralized configuration in the recoveries of both single and multiple fiber failures. Optical power loss analysis and compensation of the recovery routes in the distributed scheme are also presented. We show the required number of optical amplifiers for the longest recovery route in the distributed

Hybrid Ring-Star-Tree Topology with Optical Add Drop Multiplexer: Cost Effective and Capacity Enhancement

“…Wavelength Division Multiplexing (WDM) ring networks are designed to reduce the overall cost, which include the cost of electrical components as well as the cost of optical components [9]. A lot of research attention has been attracted by WDM star network as architecture for local/metro area network applications due to its less network cost and simple network operation [10]. Tree network covers broad geological area and increase the ability of system.…”