Photonic computing for AI inference — silicon photonics interconnect displacing copper at rack scale
Co-packaged optics is a real 2026-2028 architectural shift for AI racks, but the pure-play universe (LWLG, POET) has burned investors repeatedly on execution. Grok noted 'first_hints' sector stage — earliest of all 20 themes — which is genuine early signal, but timing to revenue remains 12-24 months out. Research now, position when NVIDIA/Broadcom name specific CPO suppliers.
Why then
- +Nvidia and Broadcom have CPO on 2026-2027 roadmaps publicly
- +800G/1.6T pluggable optics power draw becoming binding constraint at rack scale
- +TSMC and Intel Foundry actively bidding for CPO integration work
Risks
- −CPO timeline slips further right — persistent story for 5+ years already
- −Pluggable optics get another generational improvement, delaying CPO adoption
- −POET/LWLG execution failure — history of missed milestones