Key Findings
A report from Precision with Light details the full-scale eruption of an Intellectual Property (IP) war within the silicon photonics sector. GlobalFoundries, a leading semiconductor foundry, bolstered its technological portfolio by acquiring Advanced Micro Foundry (AMF) in November 2025. Simultaneously, Tower Semiconductor is aggressively pursuing a dramatic expansion of its silicon photonics technology. The patent disputes between these two companies highlight an intense competition for technological superiority and market dominance in this rapidly growing field.
Technical Details
Silicon photonics, a technology that transmits and processes optical signals on a chip, is considered indispensable for next-generation AI data centers, High-Performance Computing (HPC), sensors, and quantum computing due to its advantages in high-speed data communication, low power consumption, and high integration. Through the acquisition of AMF, GlobalFoundries gained specialized expertise and patents in the design and manufacturing of silicon photonics devices, particularly optical modulators, photodetectors, and wavelength division multiplexing components. This acquisition further strengthens the competitiveness of its ‘Fotonix’ photonics platform. Tower Semiconductor, on the other hand, boasts years of experience in silicon photonics, excelling in custom solutions for specific applications like automotive LiDAR and medical sensors. The IP held by both companies spans diverse areas, including optical waveguide design, hybrid optoelectronic integration, packaging, and manufacturing process optimization. These IPs are crucial for establishing technological leadership as they form the foundation for manufacturing high-performance, mass-producible photonic devices.
Background & Context
The increasing complexity of AI models and the explosive growth of data volumes are exposing the limitations of traditional electrical interconnects for inter-chip communication. This has led data centers to face significant challenges: the ‘power wall’ and the ‘communication wall,’ accelerating the transition to optical interconnects, especially Co-Packaged Optics (CPO). Silicon photonics is the core technology supporting the growth of this optical interconnect market, with its market size projected to reach tens of billions of dollars over the coming decades. Against the backdrop of this immense market potential, major foundries are focusing on acquiring relevant IP and strengthening their platforms, making patent disputes an inevitable part of the competition.
Strategic Significance & Outlook
The intensifying silicon photonics IP war will accelerate technological innovation across the industry while also introducing business challenges such as patent licensing and litigation risks. The competition between GlobalFoundries and Tower Semiconductor will influence the standardization of silicon photonics technology, the establishment of the supply chain, and ultimately, market pricing. The company that prevails in this IP war will lead the convergence of semiconductors and optical communication in the AI era, playing a decisive role in shaping the future of data centers and high-performance computing. Moving forward, strengthening patent portfolios, strategic alliances, and balancing open innovation with exclusive IP strategies will be key to each company’s success.
Source: https://precisionwithlight.substack.com/p/the-first-shots-in-the-silicon-photonics
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