# Advancements in silicon photonics for AI infrastructure

> Developing situation record from CLSTR: https://clstr.news/situations/advancements-in-silicon-photonics-for-ai-infrastructure
> Updated: 2026-10-19T10:07:04.000Z. Sources: 7. Developments: 3.

The technology sector is seeing increased development in silicon photonics and integrated optics to support next-generation artificial intelligence and high-performance computing. 

Coherent introduced its PhotonLink platform, an integrated optics solution designed for AI data centers. The platform utilizes technologies such as InP lasers and silicon photonics to support co-packaged and near-packaged optics. The company reported multiple engagements with anchor customers and expects revenue to begin ramping in late 2026.

Following this, Intel positioned silicon photonics as a critical solution for overcoming the limitations of traditional copper interconnects, specifically regarding bandwidth density and energy consumption. Intel highlighted its capacity to provide 300mm Indium Phosphide silicon photonics technology at scale to support near-package and co-packaged optics. The company aims to drive industry standards for external light sources and reduce energy consumption to below 5 picojoules per bit.

At the 2026 Open Compute Project (OCP) Global Summit, industry leaders emphasized a shift in AI infrastructure toward high-density, integrated systems. Nvidia introduced design contributions for its Vera Rubin platform via the MGX 1.2 specification, featuring rack-scale liquid cooling and power densities up to 250 kW per rack. This transition positions liquid cooling as a critical requirement for modern compute trays. Intel reaffirmed its focus on silicon photonics to address bandwidth limits, stating it is currently the only foundry capable of large-scale industrial production of 300 mm silicon photonics solutions integrating indium phosphide (InP).

## Timeline

### 2026-10-19: AI infrastructure shifts toward liquid cooling and silicon photonics at OCP Summit

The OCP Global Summit 2026 showcased a transition to high-density AI infrastructure, featuring Nvidia’s liquid-cooled MGX architecture and Intel’s silicon photonics for high-speed, low-energy data transmission.

2 sources. https://clstr.news/cluster/ai-infrastructure-shifts-toward-liquid-cooling-and-silicon-photonics-at-ocp-summit

### 2026-10-18: Intel positions silicon photonics as the “Golden Hammer” for next-gen systems

Intel announced its silicon photonics strategy, claiming to be the only high-volume foundry delivering 300mm Indium Phosphide technology to support AI and HPC needs.

2 sources. https://clstr.news/cluster/intel-positions-silicon-photonics-as-the-golden-hammer-for-next-gen-systems

### 2026-09-23: Coherent launches PhotonLink platform for AI data centers

Coherent launched PhotonLink, an integrated optics platform for AI data centers supporting CPO, NPO, and chip-to-chip connectivity, with revenue expected to ramp in Q4 2026.

3 sources. https://clstr.news/cluster/coherent-launches-photonlink-platform-for-ai-data-centers

---
Cite as: Advancements in silicon photonics for AI infrastructure. CLSTR, https://clstr.news/situations/advancements-in-silicon-photonics-for-ai-infrastructure