Coherent Expands Texas Facility, Scaling AI's Optical Backbone

Summary

Coherent has broken ground to expand its 6-inch indium phosphide (InP) fab in Sherman, Texas. The project is financed by a $50 million CHIPS Act grant and a $2 billion investment from NVIDIA. The goal is to scale the production of optical interconnect components for AI data centers where copper is no longer sufficient.

Why it matters

As AI clusters reach 576+ GPUs, optical interconnects are becoming the limiting factor for system performance and power efficiency. This turns domestic InP supply into a strategic bottleneck. The move signals a genuine return to the US for compound semiconductor manufacturing. However, the real test will be whether serial production at the 6-inch scale can keep pace with the construction speed of AI infrastructure.

Highlights

• 6-inch InP wafers increase usable area by approximately four times compared to 3-inch wafers, directly reducing cost per component.
• NVIDIA's $2 billion investment and multi-billion dollar purchase commitments guarantee a multi-year supply relationship.
• At the NVL576 scale, optical components are taking over from copper for intra-rack interconnects, making lasers and transceivers the critical path for connectivity.

Critical take

This is an NVIDIA Newsroom blog post, not independent news. All claims are presented through the lens of the NVIDIA-Coherent partnership. The phrase 'world's first 6-inch InP fab' is Coherent's own marketing language. The article lacks competitor context, independent yield data, or cost metrics. It also does not specify what happens if the expanded building deviates from its timeline. The $50 million CHIPS grant is a negligible figure next to NVIDIA's $2 billion commitment, yet it is highlighted in the headline. This indicates that the news carries a dimension that is as much optical (in the metaphorical sense) as it is about production.