Infinera, a provider of Intelligent Transport Networks, has completed of a subsea field trial with a major subsea network provider on a new trans-Atlantic route. The trial was conducted with the XTS-3300 meshponder and demonstrated the potential of 19 terabits per second (19T) per fibre pair, delivering the highest spectral efficiency on a major trans-Atlantic route.
Subsea optical networks enable cloud-based services to reach users around the world. Given the high complexity and cost of deploying submarine optical systems, subsea operators prefer high-performance, high-capacity equipment that maximises return on investment.
The XTS-3300 is powered by Infinera’s Infinite Capacity Engine 4 (ICE4) and is part of the firm’s Intelligent Transport Network portfolio optimised for long-haul subsea applications. It delivers the performance of Infinera’s ICE4 technology, including enhanced pre- and post-dispersion compensation, digitally synthesised Nyquist subcarriers and soft-decision forward error correction gain sharing.
The company said that the trial validates ICE4’s transmission of 8QAM (quadrature amplitude modulation) 600 gigabits per second (600G) super-channel in 140 gigahertz of spectrum, delivering the highest spectral efficiency of 4.3 bits per second per hertz with commercial-ready performance margin.
“While optical vendors have demonstrated experimental approaches to boost subsea fibre capacity, the Infinera XTS-3300 is the first commercial platform that can deliver over 19T of capacity on a trans-Atlantic route,” said Andrew Schmitt, Lead Analyst at Cignal AI.
“The XTS-3300 trial used tighter channel spacing and advanced compensation techniques in the DSP, paving the way for operators to deploy highly efficient platforms that maximise subsea fibre spectrum utilization.”
Scott Jackson, Infinera Vice President, Subsea Business Group, said, “We are continually enhancing solutions to deliver the best capacity-reach performance for subsea cable systems. This industry-first trial underscores the significant value Infinera Intelligent Transport Networks bring to subsea network operators.”
The ICE4-based Infinera DTN-X XT Series and XTS Series are planned for general availability this quarter. Infinera’s Cloud Xpress 2, also based on ICE4, began shipping in the second quarter of 2017.