Tower Semiconductor plans to make Japan its largest optical-chip production hub

Nikkei Asia reports that the chipmaker’s planned $4 billion investment aims to meet booming demand for AI server technology.

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Tower Semiconductor plans to make Japan its largest production hub for optical communications chips with a planned $4 billion investment, Nikkei Asia reported on September 24, 2026, citing CEO Russell Ellwanger. DIGITIMES says the plan involves expanding silicon photonics, silicon germanium and advanced packaging capacity in Japan’s Hokuriku region as demand from AI data centers accelerates.

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Tower Semiconductor plans to make Japan its largest optical-chip production hub

Nikkei Asia reports that the chipmaker’s planned $4 billion investment aims to meet booming demand for AI server technology.

20d agofirst seen 20d ago

Two clean-room workers inspect a semiconductor wafer at a Tower Semiconductor facility.

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Tower Semiconductor plans to make Japan its largest manufacturing hub for optical communications chips, Nikkei Asia reports, as the company expands capacity for components used in AI data centers.

The project has a forecast scope of $4 billion. Tower's own disclosure says the company expects to invest $3 billion, with another $1 billion coming from Japanese government grants.

Two expansion tracks in Japan

The first track repurposes Tower's Arai facility for 300mm silicon photonics and advanced packaging while increasing output at its Fab 7 plant in Uozu. Tower says that portion is expected to reach full production readiness in the fourth quarter of 2027.

The second track calls for another 300mm manufacturing facility beside Fab 7. It is designed to produce silicon photonics and silicon germanium components, technologies used to move data at high speed and to support optical links inside increasingly dense AI systems.

The company says the expansion responds to accelerating long-term customer demand. The disclosures do not name customers or break out how quickly the full $4 billion will be spent, so the investment should be understood as a multistage capacity plan rather than a single factory opening.

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Tower Semiconductor plans to make Japan its largest optical-chip production hub

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Tower Semiconductor plans to make Japan its largest optical-chip production hub

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Two expansion tracks in Japan

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Two expansion tracks in Japan

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