A Little-Known Material Has Become Critical to AI Infrastructure

The global race to build artificial intelligence infrastructure is increasingly being shaped by access to materials that remain unfamiliar outside semiconductor circles. One such material is indium phosphide (InP), a compound semiconductor that plays a crucial role in the production of high-speed optical chips used in modern AI data centers. As AI models continue to grow in size and complexity, operators are investing heavily in faster networking technologies capable of moving enormous volumes of data between processors, storage systems, and computing clusters. That demand has elevated indium phosphide from a specialized semiconductor material into a strategic component of the global AI supply chain. China’s export restrictions on the material are now raising concerns across the semiconductor and data center industries.