Bright House Networks, which is the sixth largest owner and operator of cable systems in the U.S., has successfully trialed Fujitsu’s 400G transport technology in its live network.
The trial was Fujitsu’s first 400G trial with a cable MSO used Fujitsu’s 400G optical networking transceivers over the Fujitsu FLASHWAVE 9500 Packet Optical Networking Platforms (Packet ONPs). Upon completing the 400G trial, an error-free rate of 800 G was also attempted and achieved–maximizing the potential of future networking capabilities while showing their commitment to leveraging customers’ investment in their networks.
Fujitsu noted several key technical advancements demonstrated by this trial:
- Fujitsu’s 400G and 800G Super Channel capabilities enable higher per-channel scalability;
- Support for adaptive modulation schemes, including DP-QPSK and DP-16QAM, opens up the ability to optimize spectral efficiency while accommodating dynamically changing reach demands
- Increased spectral efficiency was achieved with Nyquist filtering techniques reducing optical signal bandwidth.
- Nonlinear compensation (NLC) techniques were employed to reduce the resulting optical penalties and extend the achievable transmission distance to overcome nonlinear fiber impairments due to optical transmission.
“Our work with Fujitsu allows us to further advance our current transport infrastructure, from 10G to 100G and now 400Gbps and beyond,” said Craig Cowden, Senior Vice President, Network Engineering, Operations and Enterprise Solutions, Bright House Networks. “Our technology is part of people’s lives, so we continually invest in our network to deliver new and innovative solutions. This initiative provides us with the ability to upgrade the amount of bandwidth available on our existing DWDM infrastructure to support the ever-increasing High Speed Data requirements of our customers and new initiatives, such as fiber to the home, for years to come.”