Simulation of Ring-based Passive Optical Network and Its Experimental Verification

Abstract

Passive Optical Networks (PONs) are mostly used as modern high-speed access networks today. Typically, PONs are based mainly on tree or hybrid tree-star topologies in practice. However, these topologies are significantly vulnerable, especially in case of sophisticated attacks or global malfunctions of central optical line termination (OLT) units. Due to that, an innovative idea of forming PON with a simple ring topology by using standard passive splitters was proposed and is presented within this paper. Thanks to a ring topology, the secondary OLT unit can be placed in any potential location within the ring and this can significantly increase the vulnerability of the whole network. The article contains the description of this idea and also necessary simulations were performed. To verify these theoretical assumptions, experimental PON network with a ring topology was created and its characteristics were measured and compared with simulations and models. Moreover, the functionality of the protection mechanism was confirmed as well as the functionality of the entire ring PON network.

Design and Analysis of Self-Healing Tree-Based Hybrid Spectral Amplitude Coding OCDMA System

“…This allows the proposed system to immediately restore the flow of affected traffic in case of failure across the network. Moreover, use of star-ring topology eliminates the significant power loss that is encountered in single-ring based PON [13,[20][21][22]. OS onu is at position 1, under normal mode of operation, and all traffic is being sent and received though dedicated DFs.…”

Entirely Passive Remote Node Design And System Architecture For Bus Topology Based 80Gbps Symmetrical NG-PON2

“…Although the proposed ring-based architecture protects in case of ber cut or equipment malfunction. However, the cost involved in keeping and additional OLT and dual ber is quite high [7]. B. Chen et.…”

Entirely passive remote node design and system architecture for bus topology based 80Gbps symmetrical NG-PON2

“…Although the proposed ring-based architecture protects in case of ber cut or equipment malfunction. However, the cost involved in keeping and additional OLT and dual ber is quite high [7].…”