The Race for Capacity: Space-Division Multiplexing in Next-Generation Subsea Cables
Date / Time: Tuesday, October 15, 2019, 12:00 p.m. New York / 5:00 p.m. London
sponsored by

Geoff Bennett, Director of Solutions & Technology, Infinera
Dr. Pierre Mertz, Distinguished Engineer, Infinera

Dr. Steve Grubb, Global Optical Architect, Facebook

Dr. Sergei Makovejs, Market and Technology Development Manager, Corning

Global bandwidth usage is expected to grow at a compounded annual rate of approximately 40% between 2018 and 2025, and an increasing share of that demand is coming from hyperscale Internet content providers (ICPs) like Facebook and Google.

Over the last decade, subsea transmission cables have evolved from pre-coherent, dispersion-managed cables to all positive-dispersion cables that are optimized for coherent transmission. We are now seeing a transition to so-called space-division multiplexing (SDM), which represents the latest trend of subsea cables with higher numbers of fiber pairs to meet growing demand from ICPs. SDM-based solutions also enable subsea cable operators to achieve lower cost per bit.

Join this webinar and learn:

  • What is driving hyperscale ICP demand, and is it sustainable?
  • What is SDM, and why do we need it?
  • What are the fiber and cable solutions for current and future SDM systems?
  • What are the implications of subsea SDM systems on long-haul terrestrial networks?
  • What features are needed in next-generation transponders to maximize performance over these cables?
  • Will these new features help in “legacy” cables as well as in SDM systems?


Geoff Bennett, Director of Solutions & Technology, Infinera
Geoff Bennett is the Director of Solutions & Technology for Infinera, a leading manufacturer of Intelligent Transport Network solutions. He has over 35 years of experience in the data communications industry, including IP routing with Proteon and Wellfleet; ATM and MPLS experience with FORE Systems; and optical transmission and switching experience with Marconi, where he held the position of Distinguished Engineer in the CTO Office. Geoff is a frequent conference speaker and is the author of “Designing TCP/IP Internetworks,” published by VNR.

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Dr. Pierre Mertz, Distinguished Engineer, Infinera
Dr. Mertz is currently a Distinguished Engineer at Infinera developing advanced modulation formats, optics, and software for subsea communications. He previously held positions at Alvesta and in the Communications and Optics Research Lab at Hewlett Packard. Dr. Mertz received his Ph.D from Princeton University and a B.S. from Cornell University. He is an inventor on over 20 patents.

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Dr. Steve Grubb, Global Optical Architect, Facebook
Steve Grubb oversees the build of several new open submarine cable systems and introducing new optical technologies. Prior to Facebook, he was a Fellow at Infinera where he directed work on next-generation Photonic Integrated optical and network technologies. He was responsible for the first commercial introduction of Raman amplifiers in fiber networks. He has held positions at Corvis, SDL and AT&T/Lucent Bell Laboratories. Steve has more than 100 published papers and conference contributions and more than 75 issued US patents.

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Dr. Sergei Makovejs, Market and Technology Development Manager, Corning
At Corning, Sergei Makovejs has global strategic responsibility for marketing, market development and product development direction of long-haul and submarine fiber segments. Sergei received a Ph.D in Electronic and Electrical Engineering from UCL, UK and an Executive MBA from Warwick Business School, UK Prior to Corning, Sergei worked at Siemens, where he was responsible for the design of rail automation signalling systems. Sergei has authored and co-authored more than 40 peer-reviewed journal and conference papers in the field of optical communications. He is a regular presenter at international conferences and seminars on emerging technology trends that shape long-haul terrestrial and submarine networks and is a respected figure within the optical communications community.

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