Sumitomo Corporation is the world's largest fiber optic company with $31. Use it as a fast shortlist when planning new FTTH/FTTA or data-center builds. Leaders like Corning, YOFC, Fujikura, and Prysmian drive innovation and scale the infrastructure behind the digital economy. Global internet traffic is expected to surpass hundreds of. As we examine the Top 10 Optical Fiber Companies, we'll explore the pioneers who are shaping next-generation connectivity solutions for telecommunications, data centers, medical technology, and smart infrastructure., Prysmian Group, Fujikura Ltd., Sumitomo Electric Industries, and OFS (a subsidiary of Furukawa Electric).