AI Networking and Optics Boom
The idea
I believe AI data centers are outgrowing today's networks, so the money flows to whoever moves the data: the lasers, the chips that pull optics onto processors, the switches, fiber and the contract manufacturers behind them. The optics layer looks like the tightest bottleneck, so it gets the largest weight, spread across 30 companies so no single name makes or breaks it. Steadier switch, fiber and manufacturing names act as ballast against the sharper swings in optics, with a handful of tiny photonics positions kept small, and I hold 10% in cash to add if the group sells off.
What it owns
- The chips inside every optical link, and the packaging that moves optics right next to the processor, grow with each jump in network speed. · BroadcomIt makes the switch chips at the heart of most AI Ethernet networks and is pushing co-packaged optics, so it gets paid whichever box maker wins., Marvell TechnologyIt leads in optical DSPs, the chips inside transceivers that clean up the signal at very high speeds, so every faster optical link needs one., Credo TechnologyIt makes connectivity chips and the active cables that link servers inside a rack, and it just launched a new optical cable., Astera LabsIt makes the chips and switches that link GPUs and memory inside an AI rack, the short-distance side of moving data., SemtechIt makes driver chips for optical transceivers and has set ambitious data center revenue targets for coming years., Tower SemiconductorIt is a contract chipmaker for silicon photonics, the light-based circuits many transceiver and co-packaged optics designs use., MaxLinearIt designs optical digital signal processors that compete with established vendors and has raised revenue guidance significantly as data center customers deploy its chips in larger volumes., Amkor TechnologyIt packages chips, and co-packaged optics turns packaging into the step where optics and processors get joined.28%
- These companies make the lasers and optical modules that are sold out for years, so they feel AI demand first and most. · Coherent Corp.It builds the transceivers that turn electrical signals into light between servers, makes its own lasers, and is working on co-packaged optics where the optics sit right next to the chip., Lumentum HoldingsIt makes the indium phosphide lasers inside the fast transceivers AI clusters run on, treating this as the tightest bottleneck with optical parts reported sold out for years., FabrinetIt builds optical modules under contract for the big optics and chip companies, so it gets paid on volume no matter whose design wins., MACOM Technology SolutionsIt makes the analog chips that drive lasers and boost signals inside optical links, so more optical links means more of its chips., Applied OptoelectronicsIt is a smaller transceiver maker that rises and falls hardest when optics move, and recently raised capital to fund growth., AXT Inc.It makes the indium phosphide wafers that lasers are grown on, the very bottom of the laser bottleneck.22%
- Every AI cluster needs switches and optical gear to tie thousands of chips together, which makes these steadier ways to own the buildout. · Arista NetworksIt sells the Ethernet switches that big cloud companies use to wire up AI clusters, and every switch port needs optics plugged into it., CienaIt makes the optical gear that links data centers to each other across cities, which matters more as AI training spreads across multiple sites., Cisco SystemsIt is the steadier networking giant here, selling switches and optics into AI builds while its older business keeps the stock calmer than the optics specialists., CelesticaIt builds the switches and server hardware that cloud companies design themselves, so it rides switch volume directly., NokiaIt owns Infinera, which makes optical networking gear and its own indium phosphide lasers, giving the take a cheaper, steadier way to own optical networks., Hewlett Packard EnterpriseIt owns Juniper, so it now sells switches and routers into AI data centers along with servers.20%
- More bandwidth means more fiber and connectors inside and between data centers, sold by large, profitable companies. · CorningIt makes the optical fiber that wires AI data centers, and industry sources see a fiber supply crunch lasting through late this decade., AmphenolIt makes the connectors and cables, copper and fiber, that tie every server and switch together in an AI rack., Bel FuseIt is a small maker of connectors, cables and power parts used in data center networks.10%
- Contract manufacturers assemble the AI racks and networking gear, and test makers get paid for every optical link checked, whoever wins. · JabilIt builds data center hardware, including optics, for cloud companies, and expects a large portion of its revenue from AI-related builds in coming years., SanminaIt builds complete AI racks and networking hardware for cloud companies, a steadier way to get paid on the buildout., Flex Ltd.It manufactures data center hardware and power gear for the big cloud and chip companies, one of the steadier builders in the basket., Viavi SolutionsIt makes the test gear that checks optical links work, and every new link speed means a new round of testing equipment.9%
- Tiny companies with new optical technology that could pay off big if it reaches volume, sized small because most of their revenue is still ahead of them. · POET TechnologiesIt is betting its optical interposer, a base that holds lasers and chips together, can make transceivers cheaper to build., Lightwave LogicIt is betting its polymer material can make faster, lower-power optical modulators than today's options., AelumaIt is working on quantum dot lasers grown on silicon, moving toward commercial optics customers.2%
- Cash10%