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Retail Investor, AI Hardware Supply-Chain Research
Lumentum is a leader in AI laser supply, where demand will outstrip supply into 2027, per Samsung Securities. Its edge is technology and scale: it launched a 1.6T DR4 transceiver using 200G-per-lane EML in March 2026, holds 50-60% of the high-end laser chip market with an EML seen as the industry gold standard, and its co-packaged optics should enter volume production from mid-2027. Coherent is its main rival, with vertical integration and 6-inch InP wafers as cost advantages. x.com
Lumentum's fundamentals show no sign of weakening demand, with orders stacked up through 2028. The CEOs of both Lumentum and Coherent describe the constraint as insufficient supply, not insufficient demand. Optical orders take time to show up in reported results, and the earnings themselves are fine, with very high margins. x.com 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
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
Wafer-tested VCSEL arrays could erode Lumentum's laser scarcity premium if scale-up links adopt wide, parallel designs. Lumentum's in-rack demo used arrays but does not replace every high-power laser; Credo and ams OSRAM seek approval for a parallel-link standard in 2027. Multiple suppliers would pressure pricing power and margins. Near-term earnings could still benefit from laser shortages, with Lumentum sold out through early 2029. x.com
Lumentum's AI demand is no longer a future story; it is already showing up in the numbers. Cloud and AI revenue more than doubled year over year, with components up 103% and systems up 123%. 200G EML shipments hit a record above 25% of EML revenue, CPO laser shipments are growing toward meaningful revenue by year-end, pump lasers rose 80% under long-term supply deals, initial 1.6T transceivers shipped, and the OCS ramp is on track under a multi-year, multibillion-dollar agreement. x.com
Lumentum's Raman pump lasers could benefit as more inter-site AI network spending shifts to optical line systems. Cignal AI forecasts those systems taking 57% of this spending by 2030, up from 29% in 2026, and identifies Raman amplification as a major cost driver and pump lasers as one of the tightest supply-chain components. Lumentum offers those lasers and the amplifiers built around them. x.com
Lumentum and Coherent face a threat from microLED optics, which could replace laser optics with 20x less power and no temperature sensitivity by late 2027. The use case is short-reach, high-volume links under 30 meters. The copper versus optics debate is a distraction, since every AI cluster needs both and Credo now does both while Applied Optoelectronics handles long-haul; the bigger question is what microLED does to laser makers. x.com x.com
Rising 1.6T switching demand favors optical suppliers, though their execution risks vary. Bank of America says the market could grow ~101% annually through 2030. Marvell's leading DSPs and Lumentum's supply-short 200G EML lasers are lowest risk; Applied Optoelectronics' capacity expansion and Fabrinet's customer concentration make them medium risk. Aeluma remains pre-commercial, while Lightwave Logic's polymer modulators are a high-risk moonshot despite its TSM partnership. x.com
Lumentum is seeing very bullish demand signals across near-package optics, lasers and links between data centers. Management sees NPO expanding the optical TAM, with about six core customers and revenue of $50M–$100M in Q4 2026 rising above $100M in Q1 2027. Lasers remain undersupplied: EML orders run into 2027 at rising prices. Lumentum holds about 80% of pump lasers, which it aims to quadruple by early 2028 as AI clusters spread across sites, with contract visibility over three years. x.com … Show more
Lumentum is a great business, but at $954 its risk/reward is not attractive. Applying 30x to fiscal 2028 non-GAAP EPS of $40 gives a 2027 price target of $1,200, about 26% upside, or roughly 15% after adjusting for execution, financial, technology and supply risks. Reaching it needs on-time manufacturing ramps, sustained pricing power and cash flow without excessive dilution. Lost pricing power plus slipping OCS or laser ramps would break the thesis; a significant dip would offer a better entry. … Show more
AI bandwidth demand still favors Coherent and Lumentum, but tight customer financing can delay orders and lasting valuations need durable profits. A model provider losing share need not reduce total bandwidth use. Coherent could beat and raise guidance; Lumentum may only meet estimates this quarter, improving next quarter. If margins partly reflect scarce indium phosphide, added supply will test whether upgrades, volume and cost gains sustain earnings. These earnings calls remain forecasts. … Show more
