Telecommunications, Optics & Photonics Conference 2023 13 – 14 February 2023 London, UK
Conference Programme
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Thank you to our Official Sponsors
Coffee break sponsor:
Welcome On behalf of the TOP 2023 Co-Chairs and Technical Programme Committee, to which we’ve added eight new member this year, I’d like to welcome all delegates to the second Telecommunications, Optics and Photonics Conference (TOP 2023). In organising TOP 2023, our aim is to continue to bring together our local telecommunications, optics, and photonics community in a compact, face-to-face meeting in our fantastic global city, to exchange news and ideas in the traditional way in-person, while hearing about some of the latest, exciting advances and directions in our field. We were delighted with the response to our inaugural event last year, which took place in the immediate wake of the COVID-19 pandemic, but nevertheless attracted a strong and highly animated groups of delegates; and, after a long and internationally challenging 2022, we’re really looking forward to a great kick-off event in the UK for our TOP community, which is bookended this year with ECOC 2023, returning to Glasgow in early October. We are delighted with the shape of the TOP 2023 technical programme which ranges from well-established topic areas in telecommunications, photonics components, and data centres to new frontiers in radio access networks, free-space, and quantum communications. We encourage you to check out the TOP programme to view the range of invited oral and contributed presentations, and poster presentations (and quick-fire pitches), which include a great mix of industry and academic contributions. Note also, the two exciting interactive workshops, taking place at the end of both days, a highlight of TOP 2022. We’re also thrilled to kick off the first day with two highly topical plenary presentations from Professor David Richardson FRS of Southampton University and Dr Carmen Palacios-Berraquero from Nu Quantum.
In partnership with:
Supported by:
Media and Analyst Partners:
We look forward to offering you a warm welcome to London for what we anticipate will be a great start to 2023.
See you there Wladek (on behalf of the TOP TPC 2023)
Wladek Forysiak Aston University
Andrew Lord BT
James Regan, Serial Entreprenuer
Contents
General Information
4
Timetable
6 - 7
Abstracts
8 - 12
Poster Session Abstracts
13 - 15
Speaker Biographies
16 - 19
Exhibitors
20
TOP Conference 2023 is organised by Nexus Media Events Ltd Suite 3, Building 30, Churchill Square, Kings Hill, West Malling, Kent ME19 4YU United Kingdom t: +44 (0) 1732 752 125
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GENERAL INFORMATION
Admission Only TOP Conference 2023 delegates in possession of the official delegate badge will be admitted into the conference. Conference Opening Times
Copyright Protection As organisers we take a very strong view on Copyright infringement; any person reported infringing these rights will be immediately ejected from the conference. If a successful prosecution is brought by the affected company, a further ban would be imposed on the prosecuted person from attending future TOP Conference events. Children No person under the age of 18 years can be admitted to the conference. This rule also applies to the delegates children. The organisers have a right to enforce it to comply with the safety regulations of the conference.
Monday 13th 08:30-17:30 Tuesday 14th 08:30-17:30
Cloakroom opening times Monday 13th 08:00-17:30 Tuesday 14th 08:00-17:30 Photography and videotaping Photography and videotaping is prohibited within the conference. Smoking & Drugs Smoking and drug taking are strictly prohibited inside the venue premises AT ALL TIMES.
FREE
Network: etcvenues Password: Wifi8023
WIFI
There will be free WiFi access available in the conference. Please note this will only be suitable for browsing the internet and is not suitable for downloading or streaming. Most mobile devices and laptops will be able to access the free WiFi service but we cannot guarantee access as it is dependent on the software that is installed on your portable device.
Poster Sessions and Scavenger Hunt
Lunch - Monday 13th February Sandwiches - Hoisin duck wrap with cucumber & lettuce - Atlantic prawn mayonnaise on wholemeal bread - Vegan houmous & falafel wrap with cucumber, spiced tomato chutney & lettuce Salads - Vine tomato, basil & red onion - Penne pasta, rocket & red pepper pesto Thai chicken skewers in a spicy coconut sauce Harissa salmon skewers with dill mayo Lunch and Refreshments On arrival delegates can enjoy an energiser breakfast (selection of mini pastries, platter of charcuterie and breakfast cheeses, muesli and granolas, selection of yogurts, warm porridge, seasonal fruit and fruit juices) A buffet lunch: Poster presenters will display their posters in the poster hall during the conference and the Pitch your Poster session (Tuesday 13:30- 14:30) will allow delegates to hear a summary from each presenter, before the award for the best poster is announced. Poster presenters will be available in-person to answer questions and discuss their
research during designated presentation times. Delegates can also complete a short scavenger hunt, where the task is to find details on the posters around the hall. Collect a sheet from the poster hall to take part..
Unlimited Lavazza Coffee, Taylor’s English Tea and Herbal Tea will be available throughout the day
Lunch - Tuesday 14th February Sandwiches - British gammon ham, mature cheddar & seasoned mayo baguette - Severn & Wye smoked salmon with lemon & dill cream cheese bagel - Plant based onion bhaji wrap with vegetables Salads - Vine tomato, basil & red onion - Penne pasta, rocket & red pepper pesto Lamb kofta with raita yogurt Courgette, red onion & potato frittata
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Meet the TOP Technical Programme Committee Wladek Forysiak is a Reader and Deputy Director of AIPT at Aston University. He holds a PhD in laser physics and has a research Fotini Karinou is a Senior Researcher at Microsoft working on developing novel optical technologies for next generation cloud
Dimitra Simeonidouis a Marie Curie fellowship based Early-Stage Researcher, pursuing a PhD with BT and University of Birmingham on the “Application of highly precise optical clocks in a telecom network”. Telecom networks need high level of accuracy and synchronization to work effectively. Currently, this is achieved with the help of satellite-based technologies. The next generation of telecom network require precision and stability than ever before, and this is easily achieved in the lab with an optical atomic clock. The challenge is on how to bring this technology out of the lab and utilize it in our telecom infrastructure.. Another dimension of her research work involves investigating wide range of use cases and applications that can be benefitted from these highly precise clocks.
background in nonlinear photonics and high speed optical fibre communication systems. He was a co-founder of Marconi Solstis in 2000, and spent 15 years in WDM system related product development with Marconi, Ericsson, and Oclaro. A Royal Society Industry Fellow from 2012-16, he was awarded a 5-year EPSRC Manufacturing Fellowship at Aston University in 2015.
computing systems and networks. Before joining Microsoft, she was a Senior R&D Engineer at Huawei Technologies Ltd in the Optical & Quantum Lab, in the German Research Centre in Munich, where she worked on optical transmission systems and networks, spanning from high-capacity optical interconnects for datacom, to metro/access, and long-haul coherent systems.
Andrew Lord joined BT in 1985 after a BA in Physics from Oxford University. He has helped design a
Martin P.J. Lavery is a Full Professor and leader of the Structured Photonics Research Group at the University of Glasgow. He works on applying novel
wide range of optical network systems and
technologies, including long haul subsea and terrestrial DWDM networks. He has been responsible for optical fibre and systems specifications. He currently leads BT’s optical core and access research including optical access, high speed transmission, Software Defined Networking and Quantum Communications.
physical phenomena to industry inspired engineering challenges, leading research programs in developing high capacity free-space communication systems that incorporate space division multiplexing, investigating propagation dynamics of structured light in turbulent environments, solar collection optics, and acoustic wavefront shapers. He is currently the coordinator for the EU project SuperPixels, utilizing integrated photonics for sensing and communications applications, and PI on the EPSRC project Pon-HD, developing technologies for cable free passive optical networking, and has been given various awards including Scopus Young Scientist of the Year for Physical Sciences and the Royal Academy of Edinburgh Sir Thomas Makdougall Brisbane Medal.. Lakshmi Rajagopal is a Marie Curie fellowship based Early-Stage Researcher, pursuing my PhD with BT and University of Birmingham on the “Application of highly precise optical clocks in a telecom network”. Telecom networks need high level of accuracy and synchronization to work effectively. Currently, this is achieved with the help of satellite-based technologies. The next generation of telecom network require precision and stability than ever before, and this is easily achieved in the lab with an optical atomic clock. The challenge is on how to bring this technology out of the lab and utilize it in our telecom infrastructure.
Dr Mingming Tan received the Ph.D. degree in electronics engineering from Aston University, UK in 2016. He works as a Research Fellow at Aston
Institute of Photonic Technologies (AiPT), Aston University. He has published 87 journal and conference papers in the field of optical fibre communications. He is a Member of Optica. He has been a co-chair of sessions at ICTON, PIERS, and IEEE SUM since 2018, and serves as a guest editor of the journals MDPI Photonics and Applied Sciences.
James Regan has more than 30 years’ experience in the optical communications component industry. He has held several different
roles in research, engineering, project and product management, marketing, sales, and general management. Before joining EFFECT Photonics in 2011, James helped build successful business within large companies such as Nortel Components and JDSU, as well as multiple start-ups, including Agility Communications.
Anastasiia Vasylchenkova is a Leverhulme Trust Research Fellow in Optical Networks Group at University College London, running a
research project on the analytical modelling of ultrawideband optical communication. She received my BSc and MSc in nuclear physics from the Kharkiv National University, Ukraine in 2014 and 2016, respectively. and received a PhD degree from Aston University, Birmingham, UK, for developing the nonlinear Fourier transform approach for optical communications. Anastasiia is currently a Publicity Officer of the IEEE Photonics UK and Ireland Photonics Chapter,
Cathy White is a researcher at British Telecom who is working on integrating and downstreaming quantum information technology
for industrial applications. She has studied electronics, physics and quantum physics, and she worked in a variety of different technical roles in software and instrumentation before joining BT in 2011.
and a Chair of the OPTICA Optical Communication Technical Group.
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Timetable - Monday 13th February
08:30 09:00 REGISTRATION AND BREAKFAST Plenary Start Finish Title
Speaker
09:00 09:45
David Richardson (University of Southampton) Carmen Palacios-Berraquero (Nu Quantum)
09:45 10:30
Quantum interconnects - an essential capability to realise commercially-useful Quantum Computing
Sponsored by:
10:30 11:00 COFFEE BREAK AND POSTER SESSIONS
the fiber meeting
Telecommunications Start Finish Title
Speaker
11:00 11:30
Towards Maximizing Data Throughput on Subsea Fiber Optic Cables
Geoff Bennett (Infinera)
11:30 12:00
PON made simple: fibre monitoring in the access
Sander Jansen (ADVA)
12:00 12:30
ROADM design and Routing for MCF-based Multi- Dimensional Optical Networks
Shuangyi Yan (Universtiy of Bristol)
12:30 13:30 LUNCH AND POSTER SESSIONS
Quantum Communications Start Finish Title
Speaker
13:30 14:00
Multipartite entanglement distribution in quantum networks
Alejandra Beghelli (UCL)
14:00 14:30
Satellite quantum communication
Alessandro Fedrizzi (Heriot-Watt University)
14:30 14:45
Advanced photonic building blocks for dynamic reconfigurable networks in hyperscale data centres
Richard Pitwon (Resolute Photonics)
14:45 15:00
Quantum Photonic Packaging Challenges
Andrew Robertson (Bay Photonics)
15:00 15:15
Polarisation Based Entanglement Distribution Quantum Networking
Marcus Clark, University of Bristol
Sponsored by:
15:15 16:00 EXHIBITION TIME AND COFFEE BREAK
the fiber meeting
Panel / Workshop Does the UK need a Dutch-style Photon/Quantum Delta Program?
16:00 17:30
Chaired by: tbc Speakers: Wyn Meredith (Compound Semiconductor Centre) Tim Koene (EFFECT Photonics) John Lincoln (Photonics Leadership Group) Richard Murray (ORCA Computing)
17:30
CLOSE
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Timetable - Tuesday 14th February
08:30 09:00 REGISTRATION AND BREAKFAST STREAM 1: Photonic Components Start Finish Title Speaker 09:00 09:30 Pluggable Amplifiers Ian McClean (Coherent) 09:30 09:45
STREAM 2: Photonics for RAN Start Finish Title
Speaker
09:00 09:30
Laser-based Terabit Optical Wireless Networking
Harold Haas (Edinburgh University) Wyn Meredith (CSC)
Photonics integrated circuits: materials and use cases Can BDFAs be the next solution for the multi- band transmission beyond C+L-bands?
Zoe Davidson (BT) Aleksandr Donodin (Aston University) Nick Parsons (HUBER+ SUHNER)
09:30 10:00
tbc
09:45 10:00
10:00 10:15
Fiber-optic link extensions by embedded THz wireless connections
Braulio Saavedra (VPI Photonics)
10:00 10:30
Advances in High Performance Optical Switches
10:15 10:30
Novel Low Loss Metallic Fibre-to-Chip Coupling for Quantum Photonic Integrated Circuit Applications’
Michael O'Farrell (Senko)
Sponsored by:
10:30 11:00 COFFEE BREAK AND POSTER SESSIONS
the fiber meeting
STREAM 1: Data Centres Start Finish Title
STREAM 2: Free Space Optics Start Finish Title
Speaker
Speaker
11:00 11:30
11:00 11:30
Enabling technologies for 800Gb/s and 1.6Tb/s optical interconnects for future data
Maxim Kuschnerov (Huawei)
Processing multiple FSO beams with programmable photonic integrated circuits
Francesco Morichetti (Politecnico di Milano)
11:30 12:00
11:30 11:45
Photonic networks with nanoseconds
Nicola Calabretta (Eindhoven University of Technology)
Empowering Connectivity Robert Hughes (Aircsion)
switching and control for distributed machine learning systems Enabling low and stable latency communication using clock and frequency referenced access networks
11:45 12:00
Small Form Factor fiber optic connectors for Satellite and Space applications Photonic Lantern-Based High Capacity Multiple- Input Multiple-Output Free-Space Optical Communications
Guy Nurse (Passcomm)
12:00 12:30
Zhixin Liu (UCL)
12:00 12:30
Yiming Li (Aston University)
12:30 13:30 LUNCH AND POSTER SESSIONS
13:30 14:30
Pitch your poster
14:30 15:00
Poster sessions and Best Poster announcement
Sponsored by:
15:00 16:00 EXHIBITION TIME AND COFFEE BREAK
the fiber meeting
Panel / Workshop Post-Brexit UK/EU funding landscape for photonics & quantum technology research, innovation and wealth creation
16:00 17:30
Speakers: Carol Monaghan (MP) chair of APPG Photonics Manjari Chandra-Ramesh (Amadeus) Carlos Lee, EPIC Association
17:30
CLOSE
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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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Abstracts - Monday 13th February
Quantum Communications (continued) 14:45 – 15:00 Quantum Photonic Packaging Challenges
Workshop 16:00 - 17:30
UK capabilities in photonics (& new allied technologies): current status, demands and drivers, future prospects, and opportunities for growth The Netherlands is a leading nation in photonic and quantum technologies, strong supported by government R&D programs. The Dutch Photon Delta program is an integrated photonics ecosystem for photonic chips that designs, develops and manufactures innovative solutions connecting researchers and pioneers in the field with industries, investors, and viable markets. The Quantum Delta program consists of five connected quantum hubs collaborating on new applications of quantum technology and integrating diverse technologies and skillsets to raise technology readiness levels in quantum computing, simulation, networking, and sensing applications. The UK has also invested very strongly in photonics and quantum technologies via UKRI, Innovate UK and DCMS, and via the UK National Quantum Technologies Programme. Are these programmes working for the UK, for the scientists and engineers at the heart of these developments, and for UK society as a whole in terms of new business opportunities and wealth creation? Or, can we learn something from our friends and collaborators oversees, for instance the Dutch Photon Delta and Quantum Delta programs? Speaker panel:
Dr Andrew Robertson, CTO, Bay Photonics Quantum communications is enabled by photonic devices. Single photon detectors and sources are the basic components required for quantum based optical data transmission. Of course, packaging of these devices is critical and operation at low temperature (down to cryogenic) temperature is typically required. Ground-breaking advances in
semiconductor chip design for quantum technology (QT) are taking place against the current background of efforts to simplify and cost reduce photonics based components in the more mature telecoms market, often focussing largely on the packaging element, with a drive towards un- cooled and non-hermetic packages. We look at the photonic packaging challenges for critical quantum enabling components and issues arising through the use of industry standard photonic package solutions as well as highlighting potential new solutions and technological breakthroughs required to enable the future commercial success of photonic driven QT communication applications. 15:00 – 15:15 Polarisation Based Entanglement Distribution Quantum Networking Marcus Clark, University of Bristol
As quantum technology develops a method of interconnecting separated quantum system is required. For a resource efficient internet of quantum systems, this method needs to be use case agnostic. Here we present a scalable entanglement distribution quantum network functioning in the
Wyn Meredith Compound Semiconductor Centre
Richard Murray Orca Computing
telecommunications C-Band. We have achieved a network of 10 nodes, each simultaneously sharing entanglement with all other parties, preforming quantum key distribution continuously for 10.8 days with a weighted average secret key rate of 3.4 bps.
John Lincoln Photonics Leadership Group
Tim Koene EFFECT Photonics
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Abstracts - Tuesday 14th February
STREAM ONE: Photonic Components Session Chair: Mingming Tan, Research Fellow, Aston Institute of Photonic Technologies, Aston University
10:00 - 10:30 Advances in High Performance Optical Switches
Nick Parsons, Huber + Suhner As the complexity and throughput of
communications and datacentre networks continues to advance, optical circuit switch technologies become increasingly attractive for transparent routing of high line-rate traffic, avoiding the energy consumption and opacity of optoelectronic conversion. Optical switching devices bring the fibre layer directly under software control and are a key enabler towards full network automation. Over the past couple of decades, high port-density optical circuit switches have been exploited in a diverse range of systems where dynamic fibre connectivity is needed, from test automation to disaggregated computing, datacentre and quantum networks. Performance, cost and reliability has now matured to the extent that the technology is poised for wide-scale deployment in optical networks. In this talk, we review recent advances in high port-density optical circuit switches and highlight some emerging applications.
09:00 - 09:30 Pluggable Amplifiers
Ian McClean, Product Manager, Coherent Optical amplifiers are commonly integrated with transmit/receive optics enabling optical signal powers to overcome high modulator losses and to extend reach in both telecom and DCI networks. Traditional discrete solutions using Erbium Doped Optical Amplifiers or Semiconductor Optical Amplifiers are now being incorporated
into pluggable modules either as distinct amplifiers or integrated with transceiver optics and controls supporting disaggregation and reducing equipment complexity. Realising such compact designs within such challenging operating environments requires development of solutions that can be implemented in compact form factors whilst maintaining performance, cost and reliability. Challenges and solutions are assessed for the primary amplifier technology based on Erbium Doped Fibre. 09:30 - 09:45 Photonics integrated circuits: materials and use cases Zoe Davidson, BT
STREAM TWO: Photonics for RAN Session Chair: Dimitra Simeonidou, Bristol University
09:00 - 09:30 Laser-based Terabit Optical Wireless Networking Harold Haas, University of Strathclyde
Future private and public telecommunications networks will be increasingly secure and low power, in addition to developing further in the classical network requirements of higher bandwidth and lower latency. As these demands on the network grow, there will be an increasing need for integrated photonics and quantum
Cyber security, energy efficiency, data density and peak data rates of up to 1 Tbps are some of the key performance indicators of 6G. With current radio frequency (RF) technologies it will be difficult to advance all these performance indicators jointly due to fundamental spectrum limitations in the RF domain. What is needed to achieve step-
technologies. We believe that Photonic Integrated Circuits (PICs) will become a significant technology in the industry, ultimately appearing ubiquitously in network kit in high volumes. An ongoing debate in the development of PICs is the material platform that should be used. There are many candidate materials, but all have their own advantages and disadvantages. This talk will discuss the different material platforms currently proposed for photonic integration, such as GaAs and InP. In addition, we discuss where and how we believe that PICs will be used in a telecommunications network. 09:45 - 10:00 Can BDFAs be the next solution for the multi-band transmission beyond C+L-bands? considered as a short to mid-term solution for increasing the capacity of fibre-optical transmission systems. However, it involves a significant upgrade of current networks with novel optical components facilitating smooth performance beyond C and L bands. One of the most crucial elements of long-haul and regional networks is an optical amplifier. The number of doped fibre media operating beyond C- and L- bands have been reported. Unlike many other active dopants, Bi active centres allow a broadband amplification in the spectral range from 1150 to 1700 nm. Such spectral flexibility, the recent advances in development of bismuth- doped fibre amplifiers (BDFA), and their implementation in coherent transmission make them one of the most promising amplification tools for the MBT. In this talk, the recent advances on the development of the BDFAs are discussed, and the potential routes of network upgrade with developed BDFAs are analysed. Aleksandr Donodin, Aston Institute of Photonics Technologies, Aston University The multi-band transmission (MBT) is currently
change improvements in all those key performance indicators together is substantial new spectrum, devices at high optical-to-electrical (OE) conversion efficiencies and the ability to spatially control signal radiation tightly and at low energy cost. To this end, OWC can leverage decades of developments in optical fiber communications. We will summarize recent advancements in OWC with respect to peak data rates, data density, security and energy efficiency in the context of wireless networks that will support user mobility and can deal with non-line-of sight (NLOS) situations. Finally, we will discuss results from different research projects that integrated OWC in 5G RAN and project forward into 6G. 09:30 - 10:00 Advances in compound semiconductor materials and devices for future networks Wyn Meredith Compound Semiconductor Centre
Compound semiconductor (CS) materials are a critical enabler for fibre optic and RF communication systems, being the materials of choice for high specification photonic devices such as diode lasers, detectors and optical amplifiers. As the network evolves to accommodate the
demands of 5G and future 6G services, there are ever increasing demands on the specification and reduction in the cost of manufacturing of CS components. The UK has a rich history in research, innovation and production of a wide range of CS devices; we will summarise examples of current UK R+D activity and their relevance to future communications systems.
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Abstracts - Tuesday 14th February
STREAM TWO: Photonics for RAN (continued) 10:00 - 10:15 Fiber-optic link extensions by embedded THz wireless connections Braulio Gomez Saveerda, VPI Photonics
STREAM ONE: Data Centres
Session Chair: Fotini Karinou, Senior Researcher, Microsoft Research
11:00 - 11:30 Enabling technologies for 800Gb/s and 1.6Tb/s optical interconnects for future data Maxim Kuschnerov Huawei
THz wireless links with carrier frequencies beyond the W band represent an attractive way to extend existing fiber-optic network infrastructure. Such system configurations are advantageous for broadband access networks in dense urban areas, ad hoc networks of large events, or applications where fiber cable deployment is impractical.
The path towards 1.6TbE will require 200G/ lane optical technology, which could be used both for intensity modulated direct detection (IMDD) schemes and coherent optics. A higher parallelization will be needed going forward and the baud rate vs. number of lane trade-off is driven by the availability requirement of the
The design of these hybrid networks requires special attention, as the THz wireless propagation characteristics are affected by weather and atmospheric effects influencing the signal performance dynamically. We investigate within the collaborative project AI-NET-PROTECT alternatives for link architectures and analog interfaces to enable seamless interconnection between the optical fiber and the THz wireless extender of the hybrid links. We present statistical information about weather conditions to derive channel models for wireless transmission and analyze its impact on system performance. Additionally, we demonstrate the applicability of variable rate and spectral efficient modulation formats and the robustness of conventional DSP algorithms exclusively developed for optical fiber transmission when deployed to the combined fiber-optical/THz-wireless link. 10:15 - 10:30 Novel Low Loss Metallic Fibre-to-Chip Coupling for Quantuam Photonic Integrated Circuit Applications Michael O'Farrell, Senko
market. Going forward IMDD technology is facing basic limitations and the question needs to be analyzed whether these can be solved or the transition towards coherent optics is inevitable. 11:30 - 12:00 Photonic networks with nanoseconds switching and control for distributed machine learning systems Dr. Nicola Calabretta, Eindhoven University of Technology
FDiverse cloud workloads and AI applications with different requirements result in a 40% underutilization of the servers in conventional server-centric architecture with huge waste of resources and power consumption as well degradation of the application performance when
Quantum technology has been identified as a key emerging and transformative technology that will have an impact on the UK’s long term digital and economic future. One of the key technologies for the successful adoption of Quantum Technology is the use of Integrated quantum photonics uses photonic integrated circuits (QPICs) to control
available resources cannot meet application requirements, particularly for AI computing clustering. To flexibly accommodate various computing nodes and memory intensive applications, a novel disaggregated DCN architecture consisting of independent hardware (like XPU, memory, and storage) nodes, innovative DC networks with low latency and high bandwidth are crucial to support the network performance of disaggregated architecture. The talk will discuss the requirements of latency and bandwidth as well as the photonic switching technology to implement the disaggregated network infrastructure. We present an experimental prototype rack-scale disaggregated architecture based on nanoseconds optical switches and discussed the network performance assessment in terms of latency and bandwidth. 12:00 - 12:30 Enabling low and stable latency communication using clock and frequency referenced access networks Zhixin Liu, UCL
photonic quantum states for applications in quantum technologies. As such, QPICs will provide a promising approach to the miniaturisation and scaling up of optical quantum circuits. Our focus has been on addressing the challenge of coupling optical signals at the I/O ports of the QPICs. One of the potentially viable technologies to address this challenge is the Metallic PIC Connectors (MPCs). MPCs are stamped components with micro mirrors that redirect your light beams, focus (or expand) your light beams or reshape the mode field. They are stamped with sub-micron tolerances which is sufficient for single-mode optics. The MPCs also has low coefficients of thermal expansion, suitable for conventional solder reflow application.
HThe rise of timing-critical applications such as virtual reality and connected car fleets, combined with the rapid growth of the number of user devices, creates new challenges for the latency and reliability of user-cloud data communications. Currently user-cloud communications rely on time-scheduled data frames through tree-
topology fibre networks, incapable of assuring guaranteed connections with low or stable latency, which is necessary for, e.g. remote surgeries and safe operations of self-driven cars. Besides, their scalability to a larger user count is limited. Here we show that clock and optical frequency synchronisation, enabled by burgeoning frequency comb and signal processing techniques, can provide each user with dedicated optical bandwidth to enable scalable user-cloud communications that guarantees simultaneously high per-use data rate and low latency. Our approach provides accurate clock and optical frequency synchronisation over deployed optical fibre links, which will be beneficial for many applications including accurate navigation, quantum communications, and astronomy.
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Abstracts - Tuesday 14th February
STREAM TWO: Free Space Optics Session Chair: Martin Lavery, Glasgow University
12:00 - 12:30 Photonic Lantern-Based High Capacity Multiple-Input Multiple-Output Free-Space Optical Communications Yiming Li, Aston University
By developing a highly-flexible digital signal processing (DSP) architecture, we successfully demonstrate record-high-performance mode- division multiplexing (MDM) multiple-input multiple-output (MIMO) coherent free-space optical (FSO) communication systems. The DSP architecture supports versatile MIMO
11:00 - 11:30 Processing multiple FSO beams with programmable photonic integrated circuits
decoding algorithms, allowing us to demonstrate a record-high channel number of 10. By employing the adaptive bit-loading algorithm, the DSP architecture demonstrated a spectral efficiency of 28.35 bit/s/Hz and a record-high transmission line rate of 1.33 Tbit/s. By employing a successive interference cancellation MIMO decoder, the system also demonstrates enhanced turbulence resiliency using the DSP-based method with a line rate of 689.23 Gbit/s. Moreover, this architecture supports asynchronous phase noise and shows Cramer-Rao Lower Bound approaching performance for channel and phase estimation. Furthermore, the architecture reduces the hardware requirements and enables the possibility to employ commercially available mode-selective photonic lanterns for MDM transmission, which is preferable for commercial applications.quantum internet.
Francesco Morichetti, Politecnico di Milano Programmable optical processors (POPs) enabl e advanced manipulation of multiple light beams on photonic chips and offer a promising technology for the development of new devices in next- generation FSO systems. In this talk, I will report on the use of POPs as FSO MIMO transmitters and receivers capable of automatically establishing the
best chip-to-chip orthogonal communication channels and separating them with negligible mutual crosstalk, also in the presence of obstacles and time-varying perturbation in the FSO link. The presented POP architectures are implemented on a silicon photonic platform by using self-configuring meshes of integrated thermally-tuneable beam couplers connected to 2D optical phased arrays, and can be integrated with other functionalities onto the same photonic chip. Transmission experiments on spatially overlapped FSO channels at tens of Gbit/s data rates are reported. Applications are illustrated in high capacity short and long range FSO links, wave-front sensing and reconstruction, and beaming through obstacles and scattering media. BC
Workshop 16:00- 17:30
Post-Brexit UK/EU funding landscape for photonics & quantum technology research, innovation and wealth creation Photonics and quantum technology research is a long-standing UK strength, with UK photonics encompassing more than 1000 companies generating over £15 billion in output, and strong UK government support for organisations seeking to harness and commercialise quantum technologies. In January 2021, the UK government announced that it will commit to become an associated country to Horizon Europe, so that UK scientists, businesses and innovators will be able to access funding on equivalent terms as organisations in EU countries, but the process is yet to be finalised. Meantime, researchers and businesses have been encouraged to continue to work together in establishing global consortia to bid for funding. How are UK, EU and global researchers, innovators and investors responding to this challenging new situation, what obstacles and new opportunities are they encountering, and what are the best current and future strategies for established partnerships and for nurturing new research, business and investor relationships?
11:30 - 11:45 Empowering Connectivity
Robert Hughes, Aircision Aircision is developing the next generation of Free Space Optical Communication links to enable ultra-high-speed data transmission for terrestrial applications and ensuring this can be done in a sustainable way whilst being cost competitive. FSO systems in the past have either a taken a 'fix and forget' or more recently have included basic
alignment techniques to manage the environmental effects (changes in weather conditions). Aircision is taking a novel approach by combining techniques used in space, fixed line, and wireless to overcome the mechanical (movement/vibrations) and atmospherics (beam scintillation, scattering, and wander) through it's SenseFuse-IQ software manager. 11:45 - 12:00 Small Form Factor fiber optic connectors for Satellite and Space applications Guy Nurse, Passcomm
Speaker panel:
With the widening use of quantum technologies in real world applications the demands placed on photonics components used is also increasing. Requirements for maintaining high optical performance in difficult environments exposed to harsh thermal (hot and cold), shock and vibration has led to improvements in design and
Carole Monaghan (MP) chair of APPG Photonics
Manjari Chandra-Ramesh Amadeus
manufacturing of fiber optic connectors. For these demanding situations, Diamond SA of Switzerland offers the AVIM ® connector family, having a small form factor, good vibration, shock and wide operating temperature range which already has a history of successful space missions (eg Lunar Reconnaissance Orbitor, ISS). The latest addition to the range is the Diamond Micro Interface (DMI). The DMI has undergone rigorous testing by NASA for use on the James Webb Space Telescope, which included cryo testing below 100 Kelvin. Testing showed minimal change in performance, with maximum change in measured Insertion Loss.
Carlos Lee EPIC Association
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Poster Session Abstracts
Fibre Optical Parametric Amplifiers for QAM signal amplification with optimised SBS suppression techniques Mariia Bastamova, Vladimir Gordienko, Nick
Quantum Radio for future network applications
Daniel Gilks, Senior Manager, Reserch, BT Group Plc We present RF to optical conversion using a ‘Quantum Radio’ receiver. By exploiting two photon processes in highly excited atomic vapours, we can embed a narrowband digital encoding onto an optical transmission path. Introducing a radio to optical converter which can be physically separate
Doran, Andrew Ellis, Aston Institute of Photonics Technologies, Aston University Fibre optical parametric amplifiers are promising technology for future fibre optic communications for their virtually wavelength unrestricted abilities for ultra-broadband amplification, phase-sensitive
from optical to electronic/DSP componentry we can anticipate a range of novel network architecture options with radio to optical components used to geofence industrial and transport sites or to follow roads or tunnels. Furthermore, by selecting appropriate atomic electronic states this system could operate over a wide and rapidly reconfigurable frequency range.
and transient-free amplification. Furthermore, modern FOPAs are polarization-insensitive, with low noise and low crosstalk. Currently, the Stimulated Brillouin Scattering (SBS) suppression techniques (commonly pump dithering) mainly contribute to signal degradation. Whilst the systems impact of the pump dithering on a QAM signals is enhanced, general guidelines for the design of the dithering waveform remain to be minimizing both power spectral density to maximize SBS threshold and minimizing spectral width to reduce required-OSNR penalty. The demonstrated required signal OSNR penalty has been decreased by a third with only a modest reduction in SBS threshold by using the dither signal with the largest number of the most narrowly spaced tones by operating with a minimum tone spacing close to the SBS linewidth rather than a conventional spacing of 100MHz.
Fibre Optic Parametric Amplifiers for Communications
Vladimir Gordienko, Research Fellow, Aston University Fibre optical parametric amplifiers (FOPAs) have a great potential to improve transmission capacity of future optical communications due to theoretically unconstrained gain bandwidth not confined to any band, ability of virtually noiseless phase-sensitive amplification and lack of transients.
Recent advances of the FOPA technology have resolved its key issues, whereas the most important advancement was to enable a practical polarisation-insensitive amplification. Consequently, we have demonstrated a robust fully automated (black-box) FOPA operation in the C and L bands simultaneously with gain of ~20dB and output power over 23dBm when amplifying polarisation-multiplexed WDM QAM signals as well as bursty traffic. Additionally, we have demonstrated FOPA to amplify WDM signals in the S band and across continuous bandwidth of 40nm. Finally, we have demonstrated a power budget improvement of a transient-sensitive link by up to 8dB when employing a FOPA with noise figure of ~6dB as a drop-in replacement of an EDFA..
ML-aided mitigation of inter-channel impairments in WDM systems Nelson Castro, Andrew Ellis, Stylianos Sygletos, Aston University Most machine learning (ML) models for
nonlinearity mitigation in transmission systems have been developed for processing single- channel signals. Unfortunately, the improvement margins they offer to practical WDM scenarios are limited since they cannot address the inter-
channel impairments affecting these systems. A potential alternative are Multiple-Input-Multiple-Output (MIMO) schemes, which can effectively estimate the nonlinear phase shifts caused by neighboring channels. However, the viability of MIMO approaches presents serious obstacles. For instance, traditional MIMO schemes need to operate with a very large number of steps, resulting in a prohibitive computational complexity. Nevertheless, it is possible to design ML-aided MIMO models which, through the optimization of their parameters, can potentially require a significantly lower computational effort compared to traditional schemes. Moreover, this parameter optimization can inform the design of optimized architectures. Through numerical simulations, we show that our models significantly improve the performance of WDM systems while operating with a reduced computational load. Hybrid-Screens for Simulating Optical Turbulence in Complex Environments Ultan Daly, PhD Student, University of Glasgow Proposed urban free-space optical simulating optical propagation through CFD simulations of a proposed channel. However, the required CFD resolution to capture all relevant optical turbulence length scales makes this approach unfeasible for many channels. In this work we create Hybrid-screens, which utilise a low-resolution Large Eddy Simulation to capture the effect of low- frequency eddies, and the turbulence profile distribution of a channel. Statistically representative high-frequency components of the screens are then extrapolated under the assumption of Kolmogorov turbulence. We investigate the power spectral densities of the generated screens and find good agreement with the Kolmogorov power law. Additionally, we analyse the results of optical propagation through a simulated channel using Hybrid-screens. communication channels, which can have complex turbulence distribution profiles, can require expensive site surveys to determine expected system requirements. Alternatively, system requirements can be determined by
One-Dimensional and High-Dimensional Non-Coherent Detection Methods for Ultraviolet Communications Wenxiu Hu, Cenqin Jin, Mark S. Leeson, Tianhua Xu, School of Engineering, University of Warwick; Zhuangkun Wei,
School of Aerospace, Transport, and Manufacturing, Cranfield University;
Qiankun Li, School of Physics, University of Electronic Science and Technology of China
Ultraviolet communication (UVC) has strong particle character, which benefits its non-line-of-sight (NLOS) transmission but leads to strong inter-symbol interference (ISI). Existing coherent signal detection schemes are over-reliance on the accuracy of the channel estimation, and non-coherent schemes cannot provide high detection accuracy in the presence of inter-symbol interference. We propose a novel non-coherent paradigm by extracting the UV signal features which are irrelevant to the ISI. Leveraging such features, two types of non- coherent schemes are developed, namely one-dimensional (1D) and high-dimensional (HD) detection. One-dimensional non-coherent scheme combines the signal features linearly via optimal weights; and high-dimensional non-coherent scheme leverages a HD construction of the UV signal features, transforming the ISI caused sequential detection into an ISI-released HD detection framework. Our results shown that these novel schemes have merits of high detection accuracy and low computation complexity, compared to commonly used maximum-likelihood sequence detection (MLSD).
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