ARCHITECTURE / STARTER NOTE
What Actually Changes When Moving from Pluggables to CPO?
A systems-level look at architecture, thermal constraints, electrical reach, optical interfaces, serviceability, and business tradeoffs.
The boundary moves—and responsibilities move with it
Pluggable modules create a replaceable electrical-to-optical boundary at the equipment faceplate. CPO moves that conversion closer to the ASIC. The shorter electrical path can improve bandwidth density and energy efficiency, but the optics now share a more demanding package and thermal environment.
Serviceability changes, fiber must reach the package, lasers need an architecture, and test coverage must span electronics, photonics, assembly, and the complete link. The shift is therefore operational and economic as well as technical.
Full article coming soon. It will compare the two architectures across performance, cooling, repair, supply chain, and ownership boundaries.
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