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Fujitsu, MAX Reach Networking Speeds of 800 Gbps

By - Source: Fujitsu

Mid-Atlantic Crossroads (MAX) and Fujitsu Network Communications, Inc., have teamed up to announce the successful transmission of data at rates of 400 Gbps and 800 Gbps. This was achieved using MAX's optical network stretching from Baltimore, MD, to McLean, VA, during a field trial based in College Park, MD. The trial lasted a week, and was the first to use Fujitsu's new super-channel capabilities on a deployed network.

Fujitsu FLASHWAVE 9500. Image courtesy of Fujitsu.Fujitsu FLASHWAVE 9500. Image courtesy of Fujitsu.According to MAX, Fujitsu's FLASHWAVE 9500 Packet Optical Networking Platform (Packet ONP) made the record-speed transmission possible, sending data with a 25 percent improvement in channel spacing over conventional dense wavelength division multiplexing (DWDM).

"These condensed channels are a result of flexible grid utilization and are combined with advanced modulation techniques including dual-polarization quadrature phase shift keying (DP-QPSK) and dual-polarization 16-ary quadrature amplitude modulation (DP-16QAM) to greatly increase network utilization without requiring any physical adjustments to the MAX network infrastructure," states the company's press release.

The field trial first focused on achieving a stable 400 Gbps speed over the MAX network alongside the 10 Mbps and 100 Mbps channels. Once that was achieved, the two companies pushed the speed further and successfully reached 800 Gbps error-free. The MAX team believes that this new speed will enable them to provide even more robust and scalable network communication capabilities across Maryland, Virginia and the District of Columbia.

The field trial also demonstrated several key technical advancements which could lead to the next generation of optical transmission. For instance, Fujitsu's 400 Gbps and 800 Gbps "super-channel" capabilities enable higher per-channel scalability. Support for multiple modulation schemes including DP-QPSK and DP-16QAM opens up the ability to optimize spectral efficiency while accommodating dynamically-changing reach demands, the company reports.

"Additionally, Nyquist filtering techniques leverage spectral shaping resulting in an increase in spectral density," states the press release. "With nonlinear fiber impairments being a major limiting factor of optical transmission, the field trial demonstrated nonlinear compensation (NLC) techniques to reduce the resulting optical penalties and extend the achievable transmission distance."

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