TSMC to Begin Chip-Level Co-Packaged Optics (CPO) Production in H2 2026, Foreseeing Silicon Photonics Dominance in AI

Taipei Times Taiwan

Overview

TSMC Vice President K.C. Hsu announced at SEMICON that silicon photonics will gain dominance by next year, driven by AI demand, enabling chip-level Co-Packaged Optics (CPO) packaging. TSMC is on track to begin CPO production in the second half of 2026, noting that CPO adoption is accelerating faster than initially projected. This strategic move is critical for addressing bandwidth and power efficiency challenges in AI data centers, marking a significant inflection point for the semiconductor industry.

In Depth

Key Findings

TSMC Vice President K.C. Hsu announced that silicon photonics is projected to become the dominant technology by 2027, driven by surging AI demand, with the company on track to begin production of chip-level Co-Packaged Optics (CPO) packaging in the second half of 2026. This aggressive timeline underscores the industry’s rapid shift to address the unprecedented power and bandwidth requirements of advanced AI workloads, providing a concrete solution to the escalating challenges in data center infrastructure.

Technical / Clinical Details

Co-Packaged Optics integrates optical engines directly into the same package as the processing unit, drastically shortening the electrical signal path from centimeters to millimeters. This proximity significantly reduces power consumption and boosts data transmission speeds, overcoming the limitations of traditional electrical interconnects. Hsu emphasized that CPO adoption is progressing at a faster pace than initial forecasts, signaling TSMC’s readiness to mass-produce this transformative packaging technology. By minimizing signal loss and power draw, CPO enables the construction of higher-bandwidth, more energy-efficient AI clusters, which are essential for next-generation 800G and 1.6T optical networks.

Background & Context

The relentless growth of AI has pushed conventional data transmission technologies to their limits, leading to increased power consumption and thermal management issues in data centers. Silicon photonics, combined with CPO, offers a viable path forward by replacing power-hungry electrical interconnects with high-speed, low-power optical links. TSMC’s commitment to CPO production, as a leading semiconductor foundry, is a crucial development that will catalyze widespread adoption across the industry, reshaping the supply chain and positioning CPO as a foundational technology for AI infrastructure. This strategic direction aligns with major players like Nvidia and Marvell, who are also heavily investing in CPO solutions.

Strategic Significance & Outlook

TSMC’s entry into CPO mass production represents a paradigm shift for AI infrastructure design, promising to unlock new levels of performance and efficiency. By alleviating computational and bandwidth bottlenecks, CPO will enable the development and deployment of more complex and larger-scale AI models. Beyond data centers, the technology is expected to extend its influence into High-Performance Computing (HPC) and edge AI devices, accelerating digital transformation across various sectors. This widespread adoption will also create significant opportunities for optical component manufacturers and advanced packaging providers, driving further innovation in the photonics ecosystem.

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