Live webinar, 16 September: Subsea networks beyond 400G

Submarine cables carry approximately 99% of all intercontinental data traffic. As artificial intelligence infrastructure scales globally, the demand for transoceanic connectivity has reached unprecedented levels. Hyperscalers are increasingly building distributed GPU clusters spanning continents, requiring massive, reliable, low-latency optical connectivity to link data centre concentrations across oceans.

To address these critical infrastructure challenges, we are hosting a live, interactive webcast titled "Subsea networks beyond 400G: SDM and the era of 800G+ submarine waves" on Wednesday, 16 September 2026 at 3:00 PM BST.

Organised in association with industry leaders Nokia and Anritsu, the webcast brings together equipment manufacturers and network operators to explore fundamental technological innovations enabling submarine cable capacity scaling. Rather than deploying entirely new systems, operators are discovering how to expand the capacity of existing infrastructure through technology modernisation and deployment optimisation.

Key discussion topics

Attendees will gain practical insights into:

Capacity expansion advances: Technology developments enabling subsea fibre cable capacity scaling through L-band spectrum expansion, increased fibre count, and multicore fibres (MCF).

Coherent modem evolution: The progression of coherent modem technologies from 800-gigabit pluggable transceivers to anticipated 1.6-terabit coherent systems spanning transoceanic distances.

Real-world learnings: Practical deployment challenges and learnings emerging from subsea cable modernisation.

Capital planning & strategy: Operator investment strategies and capital planning for submarine infrastructure amidst AI infrastructure acceleration.

Industry outlook: Key trends shaping submarine cable decisions for the next 3 to 5 years.

Featured speakers

The session will feature expert insights from:

• Serge Melle, Director, Marketing, Subsea Networks at Nokia
• Nestor Garrafa, Technology and Planning Director at Telxius

Who should attend?

Network operators: Professionals responsible for submarine cable strategy, deployment, and infrastructure modernisation.

Cable system engineers & equipment manufacturers: Technical teams seeking insight into operator requirements and real-world deployment challenges.

Infrastructure architects: Engineers planning global data centre interconnections to support AI workloads and GPU clusters.

Telecoms executives: Business leaders evaluating capital allocation and investment strategies for next-generation subsea infrastructure.

Registration information

Registration for this virtual event is free. Attendees will also have the opportunity to participate in a live Q&A session with the panellists, download supporting materials, and request a certificate of completion.