Producer
Fujikura Ltd.
Japanese electrical/fiber optic conglomerate (TSE: 5803), founded 1885, headquartered in Tokyo. One of the top-5 global optical fiber preform and fiber producers via VAD process; co-invented VAD (Vapor Axial Deposition) in 1977 with NTT and Furukawa. Primary preform facility: Sakura Works (Sakura City, Chiba Prefecture). In March 2026, announced investment of up to ¥300 billion ($1.9B) to triple production capacity at each manufacturing site in Japan and the US. Signed Japan-US Framework Agreement with US Department of Commerce (October 28, 2025) designating Fujikura as a strategic AI infrastructure fiber supplier. Sold out of fiber through 2026 on AI data center demand surge. Also produces electronic wiring harnesses, power cables, and fusion splicers.
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Inputs supplied
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Goods downstream
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Facilities
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Stories
What they make
1 input Fujikura Ltd. supplies
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Where it shows up
Goods downstream
Essential goods that depend on something Fujikura Ltd. makes — pick one to see the full supply chain.
What else they do
Business segments
The company's full revenue map — where this supply-chain role fits within their broader business.
Optical Fiber & Cables
35%Fusion Splicers & Equipment
15%Automotive Wiring Harnesses
35%Electronic Components & Other
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Intelligence
What's known
Sourced claims about this company's role in supply chains — chokepoints, concentration, incidents, dual-use connections.
Incident2026
In March 2026, Fujikura announced it would invest up to ¥300 billion ($1.9 billion) to triple production capacity at each of its manufacturing sites in Japan and the US. Context: Fujikura was already sold out of fiber through 2026. In October 2025, the US Department of Commerce had signed a formal framework agreement with Fujikura designating it as a strategic AI infrastructure fiber supplier — an extraordinary government-to-private-company supply chain MOU for a specialty manufacturer. The tripling investment, if executed as planned, would make Fujikura one of the top-3 global preform producers by volume by 2028-2029.
Data Center Dynamics ↗Did you know2023
Fujikura manufactures the optical fiber that carries internet traffic globally AND the automotive wiring harnesses that power conventional vehicles AND EV high-voltage charging cables -- three products whose long-term trajectories are intersecting: EV chargers require fiber optic connectivity for smart grid integration, and the same copper wire expertise underlying automotive harnesses informs fiber optic cable design. Fujikura's automotive harness customers (Toyota, Honda, Mitsubishi) are the same companies investing in EV charging infrastructure that requires Fujikura-type fiber connectivity. As EVs proliferate, the boundary between automotive harness and charging cable and fiber optic smart grid infrastructure becomes blurred -- Fujikura's 140 years of wire and cable engineering positions it at the intersection of all three converging sectors.
Fujikura Ltd. ↗Origin2023
Fujikura Ltd. was founded in 1885 in Tokyo by Zenbei Fujikura, a merchant who saw opportunity in the nascent telegraph wire business as Japan was rapidly modernizing under the Meiji government. The company started making enameled magnet wire for electric motors and transformers during Japan's first industrial revolution. Over 140 years, Fujikura evolved from copper wire into telecommunications cable, then fiber optic technology. Fujikura was one of the co-inventors of the VAD (Vapor-phase Axial Deposition) optical fiber preform manufacturing process in the 1970s alongside NTT -- this process became one of two major industrial fiber manufacturing methods (along with MCVD and OVD). The fusion splicer business grew from Fujikura's fiber manufacturing expertise -- engineers who know how to make fiber also know how to join it. Today Fujikura's fusion splicers are the dominant global brand for field fiber splicing (FSX series), used by telecom installers on every continent.
Fujikura Ltd. ↗