The Path to Multi-Band Networks: Will the Economics Work?

João Pedro, Senior Principal Engineer, Infinera, Portugal

In view of the relentless demand for traffic, optical transport networks, which today exploit C-band transmission only, will face capacity exhaustion. While the past decade has seen remarkable progress in coherent line interfaces, leading to considerable improvements in spectral efficiency, fundamental limits now loom and more spectrum, in one or several flavors, will be needed. However, optical fiber is a valuable and often scarce asset, with many network operators having restricted access to additional fiber resources. These operators would welcome a multi-fold increase of capacity without having to roll out/lease more fibers. Multi-band transmission, which exploits other transmission bands of the spectrum (e.g., L-, S-, E-, U-band), is the only solution complying with this constraint, with multiple research activities currently underway to tap into its potential. This talk will overview the key challenges of multi-band networks, as well as system- and network-level strategies to address them. Qualitative and quantitative comparisons of adopting multi-band transmission to increase capacity against alternative approaches will be presented, aiming to provide insight onto the prospects of multi-band systems as the next milestone for capacity increase in optical networks.

Important Dates

Submission deadline: 20 December 2022 Acceptance notification: 10 March 2023 Camera ready submission: 20 March 2023 Conference date: 08-11 May 2023

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João Pedro holds a M.Sc. and Ph.D. degrees in Electrical and Computer Engineering from Instituto Superior Técnico (IST), University of Lisbon, Portugal. He was a research engineer and a system architect at Nokia Siemens Networks and Coriant and he is currently a senior principal engineer at Infinera, being responsible for the design of capacity planning algorithms for next-generation optical and multi-layer networks and supporting performance and techno-economic investigations of future-looking architectures. He holds 6 patent applications and has co-authored over 250 publications in international conferences and journals. He has also participated in several EU-funded projects and has been a lecturer of courses on network planning and transport networks. His current research interests include high-capacity optical networks, flexible metro-aggregation architectures, routing and spectrum assignment, multilayer optimization and machine learning applications. He is also a permanent staff member of Instituto de Telecomunicações, a senior member of the IEEE and a member of Optica.