AI data-center boom lifts fiber prices, spurs China capacity expansion

AI data-center buildouts are driving global demand for high-speed optical interconnects, the cables and components that allow servers to communicate at the speeds required for large-scale AI operations. Since the fourth quarter of 2025, fiber prices have continued rising in tandem with this demand. In response, China's fiber-optic industry is launching a new round of capacity expansion, aiming to meet the sustained infrastructure requirements of the AI era.

The article identifies a direct link between AI infrastructure buildouts and optical fiber demand. As data centers scale up to support AI workloads, they require greater volumes of high-speed interconnect capacity to move data between servers and across geographic regions. The rise in fiber prices since Q4 2025 indicates that demand is outpacing current supply, a classic supply-constrained market signal. China's fiber-optic industry is responding with capacity expansion, positioning itself to capture a portion of this growing infrastructure investment.