OFC: Lumenisity® launches hollowcore fibre, demo’s 400Gbps over 1,000km

Created June 8, 2021
Technologies and Products

Lumenisity® Limited has debuted what it claims is the world’s first deployable NANF® based hollowcore fibre optic cables, Hollowcore TradeSmart® and CoreSmart®, which boast 10Gbps, 40 channel DWDM transmission over 10km links. The CoreSmart cables offer high bandwidth and longer reach for Data Centre Interconnects (DCIs) including Edge and 5G xHaul. Recent trials by UK operator BT used ZR pluggable modules and Lumenisity’s new field deployable CoreSmart hollowcore cable to test a variety of use cases, including potential benefits for 5G networks and ultra-secure communications, such as Quantum Key Distribution (QKD)..

Following the launch, the company announced successful CoreSmart cable trials with Ciena, supporting reaches of more than 1000km for 400Gbps WDM transmission in a recirculating loop. It says the performance demonstrates the potential of the CoreSmart technology across multiple applications for higher bandwidth and longer reach latency sensitive applications such as Data Centre Interconnects (DCIs) as well as Edge and 5G xHaul.

Over the last six months, extensive testing has been underway at Lumenisity’s System Lab in Romsey, UK and with eco-system partners globally. In particular, Lumenisity and Ciena completed a number of DCI transmission trials using Ciena’s WaveLogic 5 Extreme (WL5e) and WaveLogic 5 Nano (WL5n) commercial systems. This includes the achievement of a capacity of 38.4Tbps with 48x 800Gbps channels over more than 20km of CoreSmart® field deployable cable without in line amplification. These results were gained using a fibre and cable configuration that is already shipping to customers. Lumenisity says a new generation of cables will be available next year which will allow reaches of between 50-100km with WL5e with no inline amplification. Lumenisity and Ciena also completed characterisation testing of the cable in a recirculating loop to explore the reach and capacity capability of CoreSmart, achieving over 1000km reach across the C band with 45x 400Gbps WL5e channels.

These successful trials prove that this cable solution is taking the promise of geographic expansion for DCI, longer reach financial trading and premium service applications and the extension of wireless xhaul while meeting critical network latency requirements and making it a reality. The testing shows that there appear to be no fundamental technical barriers to using this technology for future long-haul applications.

Tony Pearson, business development director at Lumenisity said, “The results obtained both internally and with Ciena commercial WaveLogic 5 systems, show further evidence that we are bringing our world class hollowcore fibre cable technology to market at an accelerating rate for multiple high-capacity applications, that solve real world latency issues for our customers.”

“System characterization results of WaveLogic 5 Extreme programmable 800G and WaveLogic 5 Nano 400ZR coherent pluggables running over CoreSmart show promising results with hollowcore fibre now proven to preserve high-capacity while materially reducing latency,” said Steve Alexander, senior vice president and chief technology officer, Ciena. “We are proud to be at the forefront of this breakthrough technological achievement where we can enable a 50 percent increase in reach for latency-sensitive data centre interconnects.”

CoreSmart cable uses a unique nested anti-resonant nodeless fibre (NANF®) patented technology. NANF is robustly single moded which provides continuous uninterrupted simultaneous single mode transmission, as well as over the full C and L bands and beyond.

Mike Fake, Director of Product Management at Lumenisity commented, “This announcement is further evidence of Lumenisity entering the coherent Terabit application space. We believe that our advanced NANF technology offers the promise of realising loss values at, or better than, conventional solid silica core fibres which will unlock future long-haul applications.”

For more information, visit www.lumenisity.com

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This article was written
by Peter Dykes

Peter Dykes is a independent telecoms and technology journalist who has over that last 30 years written for a wide range of B2B publications and companies. A former BT engineer, he specialises in networks and associated support systems. He is currently Editor of Optical Connections.