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Nokia and Zayo Push Data Speeds of 1Tbps Over 1004km UPDATE

Thursday, Jan 18th, 2024 (12:32 pm) - Score 1,760
fibre optic uk network cable flay glowing 2020

Finnish network firm Nokia and the Zayo Group, which runs a large global metro and long-haul fibre optic network, today claims to have set a new North American distance record for fibre optic data transmission on a live network by using a single wavelength to reach speeds of 1 Terabits per second (1Tbps) over a distance of 1004km.

The feat reflects the successful completion of a live field trial on the LA to Phoenix route (over 1004km via 150GHz channels), which involved Nokia’s latest 6th generation Photonic Service Engine super-coherent optics (PSE-6s). The companies separately achieved a North American transmission record of 800Gbps (Gigabits) over a single wavelength from LA to El Paso on a 1,866km link, also using the Nokia PSE-6s.

Zayo continues to invest in the capacity, capability, and sustainability of its optical network to support transport of new 400GE and 800GE services. But the trial also demonstrates the ability of Nokia’s optical technologies to support all three of these areas by increasing spectral/bandwidth efficiency, reducing the number of coherent optics required, and lowering network power consumption.

Aaron Werley, Vice President of Technology at Zayo, said:

“As a technology leader, Zayo remains at the forefront of network connectivity. We continuously invest in our cutting-edge infrastructure to ensure a future-ready network. The infrastructure projects we have, and continue to complete to advance connectivity between key cities involves the deployment of new 800G and higher-speed routes. Nokia’s PSE-6s coherent technology allows Zayo to offer ever-increasing commercial Wavelength speeds, including enabling our industry-first Waves on Demand offering, so when customers demand innovative, higher-bandwidth solutions, the capacity is there for them.”

James Watt, Head of Optical at Nokia, said:

“Nokia is very pleased with the performance of the PSE-6s in the trial and its ability to enable 800G everywhere and deliver 1T between key cities over long spans at over 1000km. We are delighted to partner with Zayo on this achievement in preparation for growing network demand. With the PSE-6s, the Nokia optical portfolio pushes the limits of super-coherent performance to deliver massive network scale and service reach while ensuring more sustainable growth.”

Naturally, there’s a video to accompany all this..


Nokia informs that the original press release incorrectly described the feat as a “world” record, when it should have only been a North American one.

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By Mark Jackson
Mark is a professional technology writer, IT consultant and computer engineer from Dorset (England), he also founded ISPreview in 1999 and enjoys analysing the latest telecoms and broadband developments. Find me on X (Twitter), Mastodon, Facebook and .
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5 Responses
  1. Avatar photo Zakir Hussain says:

    Not anytime soon in UK I wonder why theres no innovation in Broadband in UK

    1. Mark-Jackson Mark Jackson says:

      This is the sort of technology you see on international links, not domestic connectivity. Zayo has many connections that can be adopted to this, some of which go into and through the UK, which is a commercial decision. I don’t see any particular obstacle to its adoption, where and when it makes sense.

    2. Avatar photo XGS says:

      We don’t have any need for fibre paths that long locally in the UK, genius.

    3. Avatar photo RightSaidFred says:

      Quite clearly, this is not intended for consumer use.

      If we just amuse ourselves for a moment and assumed it was for consumers, no doubt that the BBC News website would be telling us that we can download an entire 4k movie in less than a second.

      Imagine being able to download the entire Netflix catalogue in a handful of hours. Either our storage needs would need to go vastly up, with Netflix going out of business, or our existing TV networks would go out of business as they’re now redundant.

  2. Avatar photo Jack says:

    Despite breakthroughs in broadband tech with speeds hitting 1Tb/s, UK’s reality remains tethered by Openreach’s max 110Mbps upload for consumers. Huge investments, yet such limited progress. Feels like a rigged game. Tech disparity

Comments are closed

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