Applied Optoelectronics, Inc. — AI supply-chain exposure

Applied Optoelectronics designs and builds fiber-optic components and transceivers, spanning 800G modules for hyperscale data-centre interconnect and an older cable-TV broadband business. The mix matters, because data-centre demand, largely AI-driven, is now only part of the company rather than all of it, making AAOI a partial rather than a pure AI play. What distinguishes it is vertical integration: it makes its own indium-phosphide laser chips rather than buying them, and it is adding capacity in Sugar Land, Texas and Taiwan as it moves toward the next optical generation, with 1.6T transceivers entering production.

The structural hook is control of the laser. By owning the indium-phosphide chip that generates the light inside each module, AAOI captures a step of the optics stack most module makers outsource, a source of supply security and margin as speeds climb. That vertical position, plus its role feeding the AI-factory interconnect layer, is why the model ranks it near the top of the chain. The counterweight is scale and mix: it is smaller than the leading Chinese optics houses, still carries a legacy broadband segment, and its AI upside rests on executing the capacity build-out it has committed to.