Gaetano
Thematic Investor, Photonics & Physical AI Research
MaxLinear's longer-term DSP demand depends on which near-packaged-optics architecture customers adopt. Keysight's Kazuo Yamaguchi explains that retimed NPO retains a DSP and allows independent engine testing, while linear-drive NPO removes it. Linear-drive designs make failures harder to isolate. The DSP risk remains worth considering: architecture choice and whose DSP customers select both affect how much of this opportunity MaxLinear captures. x.com
MaxLinear's existing product investment is translating into operating leverage as shipments grow faster than expenses. Q4 guidance midpoints imply roughly 30% sequential adjusted operating-profit growth on 15% revenue growth, ahead of the larger 1.6T ramp expected to begin shipping in H1 2027. Longer-term DSP risk remains as optical architectures change. x.com
MaxLinear is being repriced as a scale-up play: it is one of only three companies, with Marvell and Broadcom, making DSPs for 1.6T optical interconnects, yet is worth about $2B against their $50B+. Its Keystone DSP ships to multiple hyperscalers at 400G and 800G, and its Annapurna platform adds 1.6T AEC and 3.2T retimers for scale-up. Infrastructure revenue grew 130%, revenue is projected at $630M by 2028 from about $200M, and Applied Optoelectronics' 800G and 1.6T ramp needs DSPs. x.com
MaxLinear's PAM4 DSPs are crucial for 1.6T optical links. Headwinds remain from plenty of legal noise, such as the Silicon Motion merger that didn't go ahead. x.com
MaxLinear's 1.6T roadmap threatens Credo's dominant AEC position with a specific share target. MaxLinear targets 20–30% of the 1.6T active electrical cable cycle, where its management estimates Credo has 93–99% share, initially across 1–2 US data centers. MaxLinear also reports 1.6T DSP and TIA design-win commitments, with initial revenue expected in 2027 and a stronger ramp in 2028. That competitive concern is behind Credo's pre-market drop. x.com
Optical test suppliers benefit because CPO and NPO both need verified components. CPO needs screening before costly integration and checks after assembly; NPO modules must be known-good before installation. VCSELs change measurements, not the need for reliability checks. Broadcom's OCP slide shows 1,000+ fibers per chip package and automated testing. Avoid panic-selling FormFactor, Aehr, Keysight, Teradyne, Viavi, Advantest and Cohu; upside depends on adoption, volume and throughput. x.com x.com … Show more
Marvell risks paying a peak-scarcity price for Lumentum if optical supply catches up by 2028-30. The proposed ~$99B deal values Lumentum at roughly 20x guided annualized revenue and 58x estimated after-tax operating income, while Lumentum, Coherent and Chinese suppliers are adding laser capacity. The DSP-and-laser combination has strategic logic, but durable scarcity economics and Nvidia's response remain uncertain. x.com
Co-packaged optics standards could make finished transceiver modules smaller and more interchangeable as chip designers build optical engines inside their packages. That is another reason to avoid Lumentum, Coherent and Applied Optoelectronics and prefer Soitec. Lumentum and Coherent now earn a lot from finished modules, leaving them exposed if the architecture changes. x.com
More lasers per module and new 400G DSPs could keep the pluggable-optics runway open for years, supporting Lumentum, Coherent, Marvell, Applied Optoelectronics and Sivers even as co-packaged optics approaches. NVIDIA and Cisco co-designed a module with four times the bandwidth in the same slot; fewer modules per GPU look bearish, but the added optical content points the other way. x.com
Soitec's SOI wafers remain necessary no matter who builds optical engines if co-packaged optics standards take hold. Around 95% of these photonics wafers come from Soitec, so consolidation among module makers changes the buyer, not the need for wafers. Large buyers such as TSMC or Broadcom could pressure pricing and seek a second source, though none is apparent before 2030. That pricing risk is by far smaller than the module makers' architecture risk. x.com
Optics and photonics should be among AI's biggest winners as faster GPU networks need optical connections that suppliers cannot expand quickly enough. Lumentum says some components are sold out through early 2029; Sivers is investing $30M to target more than 100M lasers a year, with operations expected in Q4 2027. Potential US restrictions on Chinese transceivers could reshape supply in 2027. Applied Optoelectronics and Sivers are the favorites. x.com x.com
Pluggable optics have a new scaling path alongside CPO and NPO, supporting demand for light from Lumentum, Coherent and Applied Optoelectronics. Nvidia and Cisco's planned USFP packs 16 full-duplex 400G/lane connections into an OSFP-sized footprint, targeting four times the bandwidth density of 200G/lane modules while retaining replaceability. Volume-production timing and adoption remain unknown. x.com x.com
