# 3.2T Ethernet

Beyond Silicon: Thin-Film Lithium Niobate Emerges as the AI Era’s Essential Optical Material

As data centers transition to 1.6T and 3.2T optical modules to meet AI demands, thin-film lithium niobate is poised to replace silicon as the dominant material for high-speed signal modulation. Market projections suggest the TFLN modulator sector will see explosive growth through 2031, driven by its superior bandwidth and energy efficiency.