Article
Version 2
Preserved in Portico This version is not peer-reviewed
On the Capacity of Optical Networks
Version 1
: Received: 1 September 2023 / Approved: 5 September 2023 / Online: 5 September 2023 (07:47:34 CEST)
Version 2 : Received: 15 December 2023 / Approved: 16 December 2023 / Online: 18 December 2023 (06:21:11 CET)
Version 2 : Received: 15 December 2023 / Approved: 16 December 2023 / Online: 18 December 2023 (06:21:11 CET)
A peer-reviewed article of this Preprint also exists.
Pires, J.J.O. On the Capacity of Optical Backbone Networks. Network 2024, 4, 114-132. Pires, J.J.O. On the Capacity of Optical Backbone Networks. Network 2024, 4, 114-132.
Abstract
Optical networks, characterized by using optical fibers as a transmission medium, constitute the fundamental infrastructure employed today by network operators to deliver services to users. As network capacity is one of the key factors influencing optical network performance, it is important to comprehend its limitations and have the capability to estimate its value. In this context, we revisit the concept of capacity from various perspectives, including channel capacity, link capacity, and network capacity, thus providing an integrated view of the problem. Hence, we review the fundamental concepts behind optical networks, along with the basic physical phenomena present in optical fiber transmission and provide methodologies for estimating the different types of capacities, mainly using simple formulations. In particular, we propose a method to evaluate the network capacity that relies on the optical reach to account for physical layer aspects, in conjunction with capacitated routing techniques for traffic routing. We apply this method to three reference networks and obtain capacities ranging from tens to hundreds of Terabits/s. Whenever possible, we also compare our results with published experimental data to understand how they relate.
Keywords
network capacity; channel capacity; optical networks; optical fiber communications
Subject
Engineering, Electrical and Electronic Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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