Soitec locks customers into multi-year deals amid AI wafer demand surge

When you control 95% of a market that’s suddenly white-hot, you get to set the terms. Soitec, the French semiconductor materials specialist, is doing exactly that, finalizing multi-year capacity reservation agreements with more than ten photonics customers who need its specialized wafers to build the optical interconnects powering AI data centers.

CEO Laurent Rémont revealed that roughly 80% of those deals are expected to be signed within one to two weeks, with the rest closing within a month. The contracts include fixed pricing and structured cash deposits, a mechanism that essentially forces customers to put skin in the game before Soitec commits manufacturing capacity to them.

The deposit game

Customers who hit their volume commitments get their deposits back. Those who fall short forfeit the cash.

With an estimated 95% share of the Photonics-SOI substrate market, according to UBS, Soitec is essentially the only game in town for the wafers that make silicon photonics chips possible.

These aren’t ordinary silicon wafers. Photonics-SOI (silicon-on-insulator) substrates are the foundation for optical transceivers, the components that convert electrical signals to light and back again inside data centers. As AI workloads explode and traditional copper wiring hits its physical bandwidth limits, hyperscalers like Google, Amazon, and Microsoft are racing to replace electrical connections with optical ones.

Revenue trajectory tells the story

Soitec’s Photonics-SOI revenue barely crossed the $100 million mark in fiscal 2026. For fiscal 2027, the company projects that figure will surpass $200 million, a clean doubling in a single year.

The company’s existing manufacturing facilities can handle current and near-term demand without requiring a new fabrication plant until approximately 2029. By locking customers into contracts now, Soitec gains the revenue visibility it needs to plan that eventual expansion with confidence rather than speculation.

Why optical interconnects are the bottleneck

SOI wafer manufacturing requires specialized expertise in bonding and thinning silicon layers to precise specifications, a process that’s difficult to replicate at scale. Competitors exist, but none have achieved the volume production capabilities or quality consistency that Soitec has built over decades.

The deposit-and-forfeiture mechanism also suggests that Soitec has learned from the semiconductor industry’s painful experience with the 2021-2022 chip shortage, when customers double-ordered and then canceled when supply normalized. By requiring financial commitments upfront, Soitec is insulating itself from the boom-bust ordering patterns that have historically plagued chipmakers.