About Fujikura
Japanese cable and optical fiber maker supplying MPO/MMC multi-fibre connectors, ferrules and fiber cable for AI data centers. In March 2026 it decided to invest up to JPY 300 billion in Japan and the US to as much as triple optical fiber cable capacity; its information and communications segment grew 44.7% in the year to March 2026.
Fujikura was founded in 1885 and is based in Tokyo, Japan. It is listed under Interconnect & Networking, Photonic Computing. Its shares trade as 5803.T on TSE.
Compute Technologies
- Photonics
What Fujikura works on
Interconnect & Networking
Interconnect is the set of links that move data between chips, between boards and between racks. It includes wires on a package, cables inside a server, and the network switches and optical fibre across a data center. A processor is only as useful as the speed at which it can get data in and out.
Photonic Computing
Photonic computing uses light instead of electricity to carry or process information. Photons have no charge, so light in a waveguide does not cause the resistive heating that current in a wire does, though lasers and modulators still use power, and many wavelengths can share one waveguide. The industry has two quite different parts: moving data with light, and computing with light.
Follow the share price on the stocks page (5803.T).
