STMicroelectronics Ramps PIC100 Silicon Photonics Platform Production on 300mm Wafers to Meet AI Data Center Demand

July 19, 2026

EE Times Switzerland

Overview

STMicroelectronics is scaling up production of its PIC100 silicon photonics platform on 300mm wafers to address the escalating demand for high-capacity optical interconnects in AI data centers. This initiative involves developing advanced packaging and electrical integration capabilities to bring optical interconnects closer to processors and switch ASICs. As AI clusters expand and traditional copper interconnects reach their limits in reach, power efficiency, and signal integrity, photonics has become essential for faster, more compact optical engines. ST aims to be a ‘one-stop-shop’ for optical interconnects by combining advanced packaging, including Through-Silicon Vias (TSVs), with silicon photonics and BiCMOS technology.

In Depth

STMicroelectronics is moving forward with a strategy to ramp up production of its PIC100 silicon photonics platform on 300mm wafers to meet the burgeoning demand for high-capacity optical interconnects in AI data centers. This initiative is being pursued in parallel with the development of advanced packaging and electrical integration capabilities, which are essential for physically bringing optical interconnects closer to processors and switch ASICs.

Key Findings

The ramped production of STMicroelectronics’ PIC100 platform on 300mm wafers will enable AI data centers to deploy high-density, energy-efficient optical interconnect solutions at scale. This will significantly enhance the performance and scalability of AI workloads, overcoming the physical limitations inherent in existing copper interconnects.

Technical Details

As AI clusters expand exponentially, the volume of data movement becomes as critical as the computing process itself. Traditional copper interconnects are reaching their physical limits in terms of reach, power efficiency, and signal integrity, with these challenges becoming particularly pronounced for high-speed transmissions exceeding hundreds of gigabits per second (Gbps). Silicon photonics resolves these issues by offering superior reach, lower losses, and excellent signal integrity. STMicroelectronics is developing advanced packaging technologies, such as Through-Silicon Vias (TSVs), within its PIC100 platform. TSVs reduce interconnect losses between photonic ICs, substrates, and electronic ICs, contributing to component miniaturization, improved signal integrity, and enhanced overall performance. Furthermore, the company aims to combine silicon photonics with BiCMOS technology to offer a ‘one-stop-shop’ solution for integrated optical and electrical components, making it easier for customers to design and manufacture complex optical interconnect systems.

Background & Context

The increasing computational requirements for AI training and inference are forcing fundamental changes in data center architectures. High-speed, low-latency data transmission between processors (GPUs and ASICs), memory, and switching networks is crucial for resolving AI performance bottlenecks. Consequently, there is an accelerating trend toward integrating optical technologies at the chip level, such as Co-Packaged Optics (CPO) and near-package optical interconnects. Major semiconductor manufacturers like STMicroelectronics are strengthening their investments in silicon photonics technology to address this paradigm shift and support the evolution of AI infrastructure. The transition to 300mm wafers will enable reduced manufacturing costs and increased production capacity, further facilitating the widespread adoption of silicon photonics technology.

Strategic Significance & Outlook

STMicroelectronics’ increased production of silicon photonics on 300mm wafers offers a critical solution to the energy and performance challenges faced by AI data centers. This move is essential for silicon photonics to establish its position as a leading interconnect technology in the AI era, and it will promote further integration of optical technology in data centers, HPC, and even edge AI devices in the future. This is expected to improve the performance of AI applications and enable more sustainable data processing. ST will maintain its technological leadership in this field and play a central role in shaping next-generation AI infrastructure.

Source: https://www.eetimes.com/ai-data-centers-push-silicon-photonics-toward-300-mm-scale/

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