Trans-Atlantic Optical Transmission With 16QAM

Subsea transmission capacity demand is growing at a dramatic rate – analyst firm Telegeography forecasts a compound growth rate of 46 percent between 2017 and 2024. Much of this demand is driven by internet content providers (ICPs). On trans-Atlantic routes, for example, private ICP demand exceeded public internet bandwidth for the first time in 2014, and in 2017 ICP bandwidth accounted for the majority of overall international bandwidth usage.

Extracting maximum capacity from transoceanic cables is, therefore, paramount in importance. This webinar tells the story of the world’s first trans-Atlantic transmission using 16 quadrature amplitude modulation (16QAM) across the entire C-band spectrum, with production equipment and commercial transmission margins.

We look at the following issues:

  • Why is ICP subsea demand growing so quickly?
  • What technologies can be used to achieve successful 16QAM transmission over transoceanic distances?
  • How much capacity can we extract from subsea cables, and what is the next miracle technology?


  • Dr. Steve Grubb, Global Optical Architect, Facebook
  • Dr. Pierre Mertz, Distinguished Engineer, Infinera
  • Dr. Jeff Rahn, Distinguished Engineer, Infinera
  • Simon Stanley, Analyst at Large, Heavy Reading