R&D facilityIT & telecom

Sumitomo Electric opens PRISM Lab. optical communications research building in Yokohama

Sumitomo Electric IndustriesYokohama, KanagawaPublished Oct 3, 2026

InvestmentNot disclosed

PhaseCompleted

StartDec 2024

CompletionSep 2026

Construction

Today

20252026

Completed.

Sumitomo Electric has completed and opened Research Building No. 6, PRISM Lab., at its Yokohama Works to strengthen R&D for optical communications products used in data centers. The facility includes advanced experimental and analytical equipment, precision-controlled laboratories, and supports research into higher-performance, smaller and lower-cost optical connectors and other connection components.

Project facts

Owner: Sumitomo Electric Industries
Listing: 5802 Tokyo
Facility: R&D facility
Sector: IT & telecom
Location: Yokohama, Kanagawa, Japan
Investment: Not disclosed
Scale / capacity: 5,500 sqm total floor area
Contractor: Kajima Corporation
Construction start: Dec 2024
Completion: Sep 2026
Announced: Oct 2, 2026
Themes: AI-infrastructure

Figures and schedules are as announced by the company or the public body concerned; plans can change. Amounts that were not disclosed are recorded as not disclosed, never estimated.

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