Following its acquisition of Nubis Communications, Ciena is unveiling Vesta 200 6.4T CPX. The company calls this the industry’s highest-density, lowest-power pluggable CPO solution.
Designed to reduce power consumption by up to 70%, the solution helps hyperscalers, cloud providers, and data centre operators evolve their architectures to reliably address AI workloads in both scale-out networks as well as next generation scale-up networks.
Bridging the "retimer" gap
A primary feature of the Vesta 200 is its retimer-free linear-drive operation. Traditional optical modules require power-hungry retimers to clean up electrical signals. Vesta 200 supports a robust electrical loss budget of up to 20 dB directly from the host ASIC, allowing for more flexible, efficient architectures in space-constrained XPU servers and next-generation 200T switches.
Solving the density dilemma
As AI factories demand unprecedented volumes of fibre at the front panel, often reaching 1,000+ fibres in a single rack unit, density has become as critical as speed. The Vesta 200 utilises unique 2D fibre interconnect technology to achieve chip-edge density compatible with the smallest copper connectors, such as Samtec’s CPX.
This enables 200G/lane deployments in high-performance NICs and AI engines where traditional form factors simply cannot fit. "The unrivaled growth in XPU scale-up networks demands low-latency, low-power, high-density optical interconnects at the signal source," noted Brian Vicich, CTO at Samtec.
Promoting an open ecosystem
Historically, CPO was viewed as a "bespoke" solution that risked vendor lock-in. Ciena is countering this narrative by launching Vesta as part of an open, standards-based ecosystem.
Interoperability: The engine features an IEEE 802.3dj compliant optical interface.
Flexibility: It promotes a diverse supply chain across multiple ASIC and electrical interconnect vendors.
Reliability: The system uses a high-volume external light source (ELS), protecting the delicate photonic engine from the heat generated by the main ASIC.
"Adoption of CPO has started," said Vladimir Kozlov, CEO of LightCounting. "The next priority for operators is the development of a competitive, open CPO ecosystem. Ciena’s solution offers a path for establishing such an ecosystem."
This launch arrives as the industry prepares for OFC 2026, where the debate between Linear Pluggable Optics (LPO) and CPO is expected to take centre stage. By delivering 6.4T capacity in a retimer-free, pluggable CPO format, Ciena is providing a concrete blueprint for how the industry moves beyond 800G toward the 3.2T optical engines of the future.
If you're interested in optical interconnects for today's AI driven data centre, you should definitely sign up for next week's webinar, Break the Bottleneck: High-capacity Optics for Next-Gen GPU Clusters.
