Layer 1 of the PIC Packaging Stack — the contested, venture-relevant packaging layer.
Physics / mechanism
The core problem: a silicon-photonics waveguide mode is ~0.5 µm; a single-mode fibre mode is ~10 µm. Coupling light across that ~20× mode mismatch — efficiently, at many channels, reliably over temperature, and cheaply at volume — is its own sub-industry. The main approaches:
Competitive landscape
Full screen + business-model split in 2026 05 30 Fiber To Chip Coupling Screen. Headline: coupling-IP specialists get absorbed by connector/foundry primes (Teramount→Molex, Optoscribe→Intel); durable independents are the assembly-equipment + packaging-foundry layer (Ficontec, Phix Photonics Assembly); the one venture-and-stage-appropriate name is Opsydia (alignment-free glass coupling, IP moat).
Companies using
Sources
Frontier (open questions)
- Which approach wins volume CPO?
- Does alignment-free coupling displace active-alignment equipment?