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AI supply chain term

800G optics

800G optics are pluggable optical transceiver modules that move data across a data center at 800 gigabits per second.

What it means

800G optics are pluggable optical transceiver modules that move data through a data center at 800 gigabits per second, converting the electrical signals from switches and accelerators into light that travels over fiber. In an AI cluster, thousands of GPUs must constantly exchange gradients and activations, and copper links run out of reach at these speeds, so optical modules carry most of the traffic between racks and rows. 800G is currently the dominant, highest-volume generation being deployed in new AI network fabrics, typically built on 100G-per-lane technology. Because every accelerator needs multiple optical ports, optics scale directly with GPU count, which makes them a real capacity and supply constraint. The module makers, their laser and DSP suppliers, and the contract manufacturers that assemble them all sit on this buildout ramp.

Why it matters to investors

Optical connectivity scales with accelerator count, so 800G demand tracks AI cluster buildout rather than any single chip vendor. Pricing power concentrates in transceiver makers and their laser, DSP, and packaging suppliers, while contract manufacturers like Celestica and Jabil are exposed to the assembly volume.

See 800G optics in the AI value chainIts live model score, why it matters, and every company exposed to it.

Companies on this part of the chain

Eoptolink Technology Inc., Ltd.300502.SZApplied Optoelectronics, Inc.AAOIAccelink Technologies Co., Ltd.002281.SZCelestica Inc.CLS

Named to show where the term sits in the AI supply chain — research, not advice, and never a recommendation to buy or sell.

Related terms

1.6T optics1.6T optics are the next generation of optical transceiver modules, doubling the per-module data rate to 1.6 terabits per second.Optical transceiver / photonicsA module that converts electrical signals to light (and back) for optical links.Co-packaged optics (CPO)Co-packaged optics places the optical components in the same package as the switch chip to cut the power and distance electrical signals must travel.Network fabricThe high-speed network that ties accelerators together into a cluster.

See 800G optics in the live AI chain.

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THE ENTITY is an educational read on the AI supply chain — research, not investment advice. It explains how the chain works and who sits where, never price targets or buy/sell calls.