AXTI: Indium Phosphide (InP), Export Controls, and the Optical Communications Value Chain

In recent weeks, market discussion around China’s export controls on certain critical materials—including indium and indium phosphide—has intensified and is often interpreted as a potential negative for the optical communications value chain. The concern typically starts from the fact that indium phosphide is a core material for high-end optical communication lasers, and is then extrapolated to potential impacts on midstream laser manufacturers such as Lumentum and Coherent. However, when viewed through the lens of the actual manufacturing process for InP-based lasers, the global distribution of supply and epitaxy capacity, and the practical operation of each segment of the value chain, the practical impact of export controls appears more limited than commonly assumed.

From Indium to Lasers: The Real Value Chain of InP-Based Optical Devices

The importance of indium phosphide in high-end optical communications is undisputed, but the value chain is often oversimplified into a linear “materials → devices” narrative. In reality, there are multiple highly specialized stages between base metals and finished lasers, with meaningful differences in geographic distribution and supply dynamics: