Near-packaged optics (NPO) is gaining traction as a practical intermediate architecture as the industry grapples with manufacturing and yield challenges in co-packaged optics (CPO), according to recent analysis from SemiAnalysis. NPO moves the optical engine off the faceplate to sit beside the ASIC on a separate substrate, keeping field replaceability while reducing power consumption from ~14–17W down to ~7–10W per 800G port—splitting the difference between traditional pluggable transceivers and the more aggressive CPO power envelope.
The appeal: NPO bypasses some of CPO's thorniest problems. A soldered CPO substrate with a failed optical engine condemns the entire ASIC and substrate (and every other engine on the package), because rework means heating the die to 220°C–260°C, destroying sub-micron fiber alignment. At a 95% per-engine yield, compound yield for a 32-engine CPO package lands near 19%—one good assembly per five. NPO's socketed engines swap in the field like pluggables; a failure is isolated to one module. Broadcom is shipping 3.2T VCSEL-based NPO products; Nvidia's Quantum-X Photonics with removable optical subassemblies ships as CPO but has NPO's serviceability. Six connector and optics firms formed an Open CPX MSA in March 2026 to standardize a socketed optical-engine interface covering both NPO and CPO.
SemiAnalysis projects NPO volumes will extend through the end of the decade. The tradeoff: NPO is denser than pluggable but less so than true CPO, and its persistence signals that soldered CPO at scale remains years away while high-power-density switching moves forward.