Coriant and A1, the Austrian subsidiary of Telekom Austria Group, conducted a field trial of 400G optical transmission and Space Division Multiplexing (SDM).
The 400G field trial, which ran over a 660 km route between Salzburg and Vienna, used 8-quadrature-amplitude-modulation (8-QAM) transmission format, which significantly increases transmission reach compared to alternative approaches. The successful trial in a production network environment included 400G transmission co-propagated with 40G and 100G on A1’s currently installed Coriant hiT 7300 optical transport systems.
“This recent field trial highlights the future-proof capability of our backbone network. A capacity of 400 Gbps means that some 5,000 users simultaneously watch HDTV or video streaming or use download
from the internet via one single fiber. This trial activity was an important step toward deepening our collaboration with Coriant and facilitating seamless deployment of next-generation technologies,” said Marcus Grausam, CTO of A1.