ADVA (FSE: ADV) says it supported a high-speed coherent transmission field trial with CSC – IT Center for Science, which operates the Finnish University and Research Network (FUNET) and the Swedish University Computer Network (SUNET). The trial saw the research and education networks transmit 400 Gbps more than 10,000 km using the ADVA FSP 3000 TeraFlex CoreChannel platform. The network operators used two streams of 200 Gbps each to compose the 400-Gbps transmission.
The demonstration used live multi-degree flex-grid ROADM links using Raman amplification on FUNET’s fiber network in Finland and SUNET’s network in Sweden to achieve the more than 10,000-km distance. The two 200-Gbps streams occupied a 200-GHz window. Separately, FUNET has used the ADVA FSP 3000 TeraFlex to demonstrate 800 Gbps over a 2280-km network (see "FUNET, ADVA claim 800G long-haul record") and the transmission of two 200-Gbps streams in the 150-GHz band over more than 7,000 km.
“Our multi-domain field trial with the ADVA FSP 3000 TeraFlex CoreChannel terminal evaluated flexibility and the terminal’s capabilities to adapt to use cases where ultra-long-haul 400GbE services are needed. The results that were achieved – trans-oceanic reach over terrestrial systems – were far beyond our expectations and typical real-life service requirements,” said Jani Myyry, senior network specialist at FUNET. “Nordic research and education networks are shifting towards a federated next-generation model where optical spectrum resources are shared within the region. We have already built multiple programmable cross-border interconnection links between the FUNET and SUNET ADVA open line systems to exchange spectrum transparently. The trial utilized these interconnection links and the FUNET and SUNET network footprint to create the extremely transparent optical routes used during the tests.”
“SUNET operates a highly available, redundant and secure network as well as other related e-infrastructure services that ensures connectivity for our users both nationally and internationally. Being able to provide high-capacity connectivity to our scientists, researchers and educators over an extremely long-distance infrastructure without regeneration is a great advantage,” added Dennis Wallberg, network architect at SUNET. “We’re happy to be a part of this trial to show that optical networks that are designed and engineered with performance and high OSNR in mind can deliver ultra-long-haul 400-Gbps transport with ease.”
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