Silicon photonics combines the scalability of silicon manufacturing with the speed of light-based data transmission creating powerful solutions for today’s exploding bandwidth requirements.

Foundries specializing in this technology produce integrated circuits that move data optically rather than through traditional electrical signals offering lower power consumption and higher performance particularly valuable in artificial intelligence training clusters and large-scale data centres.

Foundry Evolution in Photonics Manufacturing

• Major players have invested heavily in dedicated platforms for silicon photonics production.
• GlobalFoundries operates a 300-millimeter CMOS-compatible process known as 90WG that supports high-volume manufacturing of waveguides modulators and photodetector.
• This capability stands out for its ability to handle complex photonic structures alongside electronic components on the same wafer.
• In late 2025 GlobalFoundries expanded its reach by acquiring Advanced Micro Foundry in Singapore strengthening its position as a leading pure-play provider and planning upgrades to boost 300mm capacity.

Data Centre Expansion and National Photonics Programs Are Accelerating Commercial Deployment

The rapid expansion of AI-driven hyperscale data centres is significantly increasing the need for advanced optical connectivity solutions. As operators attempt to connect thousands of GPUs across large computing clusters, conventional copper interconnects are facing growing limitations related to transmission distance, thermal management, bandwidth density, and power consumption.

Silicon photonics foundries are helping address these constraints by enabling co-packaged optics, where optical engines are integrated closer to processors to improve signal efficiency while reducing latency and energy usage.

• Companies such as Intel have demonstrated multi-terabit optical communication systems designed for high-performance computing environments, while collaborations involving Ayar Labs are advancing chip-to-chip optical interconnect technologies capable of supporting data transfer speeds reaching 2 terabits per second.
• At the same time, governments are increasingly treating silicon photonics as a strategic semiconductor technology essential for future computing infrastructure and resilient supply chains. In the United States, the CHIPS and Science Act has directed major investments toward domestic semiconductor and integrated photonics manufacturing capabilities, including support for research institutes, pilot fabrication facilities, and advanced packaging programs.

Similar technology initiatives are expanding across Europe and Asia, where public-private collaborations are accelerating the commercialization of integrated photonics platforms. These programs are helping silicon photonics foundries transition more rapidly from research-oriented production toward scalable commercial manufacturing capable of supporting AI networks, cloud infrastructure, telecom systems, and next-generation high-speed computing applications.

Heterogeneous Integration Advances

One of the most promising areas involves bonding different materials onto silicon platforms. Foundries develop processes for attaching III-V lasers directly to silicon waveguides solving the challenge of efficient light sources. Nature publications discuss roadmaps for next-generation platforms emphasizing hybrid integration and improved thermal management. These techniques allow foundries to deliver complete photonic solutions rather than individual components improving overall system performance.

Applications beyond Traditional Networking

While data communications remain central silicon photonics foundries support diverse uses. In sensing applications the technology enables compact high-resolution devices for industrial and medical monitoring. Quantum computing research benefits from precise photonic circuits produced in these facilities. Defense and aerospace sectors explore silicon photonics for secure high-bandwidth communications and environmental monitoring drawing on the reliability of CMOS-based fabrication.

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Collaborative Foundry Networks and Manufacturing Scale Disrupting Silicon Photonics Manufacturing

Silicon Photonics Foundry market is evolving due to a mix of increased manufacturing scale and greater collaboration throughout the sector. The move to 300mm wafer platforms represents a major milestone, enabling increased die output per wafer and bringing photonic device manufacture into alignment with existing semiconductor manufacturing ecosystems.

• The transition improves production efficiency, decreases fabrication costs on a per-unit basis and helps to meet the increased demand spurred by AI infrastructure, hyperscale data centers and high-speed optical connection deployments.
• Some foundries, such as Tower Semiconductor, have announced plans to expand capacity across their manufacturing sites, while TSMC has beefed up its silicon photonics capabilities to allow wider access for chip designers and system developers.
• Collaborative development methods are also accelerating innovation throughout the ecosystem.
• Start-ups, research groups, and smaller design firms are able to prototype silicon photonics devices without the expense of specialised production runs thanks to multi-project wafer shuttle programs.

Share of process design kits (PDKs) that standardize key photonic building blocks and ease integration into advanced semiconductor workflows is rising among universities, government-backed research institutions and commercial foundries.

These agreements are helping to cut development timelines while assuring dependability and manufacturing consistency necessary for mission-critical applications such as AI networking, cloud computing, telecommunications and high-performance computing infrastructure.

Power Efficiency Gains in Practice        

• AI systems consume enormous electricity with much of it lost in data movement.
• Optical interconnects produced through advanced foundry processes cut this overhead dramatically.
• Reports from industry demonstrations show significant reductions in power per bit transmitted compared to electrical alternatives.
• As clusters scale to millions of processing units these efficiency improvements become essential for both operational costs and environmental impact.

The silicon photonics foundry ecosystem continues maturing through dedicated engineering and strategic investments. Each new process node and integration breakthrough brings light-based data handling closer to everyday computing infrastructure supporting the massive growth in connected intelligence worldwide.