# Tower Semiconductor plans $4B investment including Japan optical-chip hub

_Published Thursday, September 24, 2026 at 4:06 AM EDT · Infrastructure · Latest · Tier 2 — Notable_

Tower Semiconductor says it plans a $4B investment that includes a production hub in Japan for optical communications chips. The Israeli foundry says the facility will be its largest hub for that category of chips. The announcement describes a future manufacturing buildout; it does not report that the Japanese hub is operating.

## Sources

- [Techmeme](https://www.techmeme.com/260924/p7#a260924p7)

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Canonical: https://techandbusiness.org/newswire/aBZPbMlWnW2qm7wpCJKcKz
Published: 2026-09-24T08:06:58.509Z
Story chronology: 2026-09-24T06:05:02.000Z
Retrieved: 2026-09-24T10:20:27.687Z
Publisher: Tech & Business (techandbusiness.org)