Fujikura Ltd. — AI supply-chain exposure

Fujikura makes optical fiber, the cable that carries it, and the fusion splicers used to join fibre in the field — the plumbing of long- and medium-reach data movement. In the AI value chain it sits as a supplier of optical interconnect, the links that carry traffic between racks, rows and buildings once distances outrun copper. Its data-center fiber and connectivity business has surged alongside the build-out of large training clusters, making it one of Japan's clearest listed beneficiaries of AI-driven cabling demand.

The structural hook is breadth: Fujikura touches the fibre, the connectors and the splicing tools, so it captures more of the optical build than a single-product vendor. As clusters scale out and interconnect distances grow, optics displaces copper, and the firms that make the fibre itself sit upstream of every transceiver. The model marks it as a real but secondary exposure — a supplier riding the shift, not a chokepoint that gates it.