CAPE TOWN -- ADVA Optical Networking and the City of Cape Town announced today that they have successfully transmitted data rates of up to 400Gbit/s across Cape Town's metro transport network. The trial combined existing ADVA FSP 3000 infrastructure and the latest CloudConnect(TM) 400Gbit/s technology to connect the townships of Nyanga and Mitchells Plain. It was one of the first demonstrations to transmit traffic at data rates of 200, 300 and 400Gbit/s over a deployed metro network. Using existing WDM equipment to achieve such high capacity underlines how the ADVA FSP 3000 scales to accommodate growing bandwidth demand. The trial is also notable for being one of the first field demonstrations of DP-8QAM to achieve interim capacity of 300Gbit/s. The showcase underlines the City of Cape Town's commitment to delivering high-speed connectivity throughout the metropolitan area and to underserved townships. ADVA Optical Networking's Elite partner XON Systems was integral in facilitating the trial.
"What we've showcased here with ADVA Optical Networking is a genuine technology landmark. Now that we know we have the power to create a 400Gbit/s backbone the possibilities are immense," said Leon van Wyk, telecommunications manager, City of Cape Town. "Ultra-fast connectivity will give government departments access to innovative new solutions. It will also make a huge difference for businesses and residents in this area. Successfully connecting the townships of Nyanga and Mitchells Plain with a 400Gbit/s transmission shows that we can bring high-speed broadband to areas that need it most. We know the power the Internet has to expand horizons, raise aspirations and enrich lives. Connecting people and local businesses with each other and with the world will regenerate entire communities."
The 400Gbit/s trial made use of the City of Cape Town's existing WDM infrastructure, which stretches over more than 100km and covers the whole metropolitan area. The meshed network is built on the ADVA FSP 3000, a modular optical networking platform designed for scalability and bandwidth optimization. To achieve the phenomenally high channel capacity, the demonstrators created a two-wavelength super-channel. Data rates were then switched between 200, 300 and 400Gbit/s to show how capacity can be automatically adjusted according to the network's shifting traffic and transmission quality requirements. Successfully transmitting a 300Gbit/s channel at just DP-8QAM is a significant milestone. This modulation format can handle lower signal-to-noise ratios for increased reliability, yet optimized fiber utilization.