New ProLabs transceivers extend network reach to 2,400km
Author: Joe Peck
ProLabs, a provider of optical connectivity and networking equipment, has introduced two QSFP-DD transceivers designed to extend the reach of coherent optical networks to distances of up to 2,400km.
The QSFP-DD 800G ZR LH and QSFP-DD 400G ZR ULH transceivers are designed for carriers, service providers, and large-scale backbone networks requiring ultra-long-haul transmission.
The products are intended to extend 400G and 800G network capacity across national and cross-continental infrastructure, while making greater use of existing long-haul fibre networks.
“We are delighted to have expanded our range of ultra-long-haul transceivers ahead of Connected Britain,” says Stefan Löhmann, EMEA Sales Director at ProLabs. “Our solutions will enable national operators to deliver new and efficient long-haul services, making it easier to deliver high-bandwidth connectivity between cities, across countries, and over subsea links.”
With network operators facing increasing traffic demands, the transceivers are designed to extend the usable reach of existing fibre infrastructure without requiring additional network infrastructure.
Transceivers support up to 30 repeater hops
While standard 400G products support around six repeater hops, the new transceivers are designed to support coherent optical transmission across up to 30 repeater hops, equating to approximately 2,400km.
Stefan continues, “By reducing the need for additional infrastructure while still maintaining long-distance performance, we’re helping operators lower both capital and operational expenditure.
“Combined with our commitment to interoperability and availability, these new transceivers provide operators with an open, standards-based alternative to proprietary optical networking solutions.”
The transceivers are compatible with standard QSFP-DD ports, allowing them to be deployed on existing platforms without significant changes to hardware.
Both products use modulation techniques and integrated digital signal processing (DSP) to compensate for laser detuning at each repeater and chromatic dispersion over extended distances.
The 400G and 800G transceivers will be available for the first time at Connected Britain 2026 on ProLabs Stand D75.
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