Abstracts - Monday 13th February
Telecommunications
Quantum Communications
Session Chair: Wladek Forysiak, Aston University
Session Chair: Cathy White, BT
11:00 - 11:30 Towards Maximizing Data Throughput on Subsea Fiber Optic Cables Geoff Bennett, Director of Solutions & Technology, Infinera
13:30 - 14:00 Multipartite entanglement distribution in quantum networks Alejandra Beghelli, University College London
With over 500 submarine fibre optic cables crisscrossing the world’s seas and oceans like a telecommunications patchwork, it has never been more important to understand the physical, technological and economical constraints dictating the amount of information that can be transmitted across them.
Entanglement distribution is a key enabler of quantum communications. In this talk, novel protocols with increased entanglement rate for multipartite entanglement distribution in quantum networks are presented.
14:00 - 14:30 Satellite quantum communication
This presentation will give an overview of how subsea cable technology has changed over the last 20 years, and how improvements in transponder technology have allowed data throughput to both keep track and lead in an almost symbiotic manner, whilst in the face of unrelenting demand. In particular, we’ll use real-life deployment data to illustrate the flexibility of modern transponders and how modulation formats, symbol rates and compensation algorithms can all be adjusted to optimize throughput on both the oldest and most up-to-date examples of submarine wetplant technology. 11:30 - 12:00 PON made simple: fibre monitoring in the access
Alessandro Fedrizzi, Professor of Physics, Heriot-Watt University Quantum communication provides a secure method to distribute encryption keys. The technology has matured considerably; early-stage systems are available commercially, and several regional quantum communication networks have been established. In terrestrial fibre networks, quantum
communication distances are limited to a few hundred kilometres due to optical loss. The solution to reach global coverage is to inter-connect regional networks via satellite quantum links. In this talk I will review the status quo of satellite quantum communication, which despite its infancy has produced some spectacular results. I will then focus on UK programs, including the planned UK Quantum Communications Hub cube-sat demonstration and our quest for intercontinental quantum key distribution via the Canadian QEYSat mission. 14:30 - 14:45 Advanced photonic building blocks for dynamic reconfigurable networks in hyperscale data centres
Sander Jansen, VP and General Manager for the Infrastructure Monitoring Business Unit, ADVA Passive optical networks (PON) are rapidly becoming the dominant access technology for network operators. PON expansion is expected to account for approximately 50% of total access sales in 2023. One consequence of the PON network
expansion is that more and more fibres are being deployed access. Glass fibres are very fragile and especially in access, where most fibre breaks happen, it is essential to be able to measure the integrity of the fibre optic network. In this presentation recent trends in fibre monitoring are discussed with focus on PON networks. What is needed to monitor PON networks in an effective way? 12:00 - 12:30 ROADM design and Routing for MCF-based Multi- Dimensional Optical Networks Shuangyi Yan, High Performance Networks group, University of Bristol
Richard Pitwon, Resolute Photonics In this talk I will introduce the activities of two new European projects DYNAMOS and ADOPTION, on which Resolute Photonics will develop advanced photonic subsystems to allow deployment and reconfiguration of ultra-dynamic photonic components for data communication, using new optical wavelength bands, space
division multiplexing, new integration schemes, optical switching and new switching paradigms, as solutions for time-deterministic and time-sensitive networks. The photonic subsystems building blocks will allow complex optical functionalities to be constructed on the fly as part of a near-packaged optical (NPO) and co-packaged optical (CPO) configuration on host boards for hyperscale data centre networking systems. Advances will cover a range of use cases from optical switching in commercial applications to optical flow or packet switching approaches that would become practical for the industrial Internet with devices able to work in harsh environments and across wider temperature operating ranges, or in high humidity.
Passive optical networks (PON) are rapidly becoming the dominant access technology for network operators. PON expansion is expected to account for approximately 50% of total access sales in 2023. One consequence of the PON network expansion is that more and more fibres are being
deployed access. Glass fibres are very fragile and especially in access, where most fibre breaks happen, it is essential to be able to measure the integrity of the fibre optic network. In this presentation recent trends in fibre monitoring are discussed with focus on PON networks. What is needed to monitor PON networks in an effective way?
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