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US plan to restrict Chinese optical modules puts a key AI supply chain under pressure
Policy Regula
2026-08-05 11:39:35

FCC draft on Chinese data-center optical modules puts focus on non-China suppliers and InP bottlenecks

The U.S. Federal Communications Commission is considering restrictions on some new data-center optical modules made by Chinese vendors, but the proposal is still in draft form and several core definitions remain unsettled. The biggest open questions are whether the FCC will define "Chinese origin" by brand, manufacturing location, or component source, whether older models can still enter the U.S., and whether non-Chinese brands using Chinese-made substrates or lasers could still qualify for exemptions. For now, the market is trading the possibility that orders shift toward non-Chinese suppliers. WhiteLine Daily identified Coherent, Lumentum, and Applied Optoelectronics as the most direct potential beneficiaries if U.S. cloud companies continue building AI data centers while Chinese new-model supply faces limits. Marvell and Broadcom could benefit later, but only if demand passes through to DSP, driver-chip, and connectivity layers after module makers actually expand output. Over a longer horizon, the report says the more important constraint may not be module assembly capacity but the supply of indium phosphide, or InP, across substrates, epitaxial wafers, and lasers. AXT, IQE, and Sivers map to different parts of that chain, though each carries a different mix of policy risk and commercial visibility. The report argues that the real test will be the final FCC rule, confirmed customer orders, and whether non-China capacity can scale fast enough.

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FCC draft on Chinese data-center optical modules puts focus on non-China suppliers and InP bottlenecks
Morgan Stanle
2026-08-05 06:33:27

Morgan Stanley says proposed U.S. curb on Chinese optical modules could open room for Coherent and peers

Morgan Stanley said in an Aug. 4 research note that a proposed U.S. restriction on new Chinese data-center components would benefit non-Chinese optical module suppliers, with Coherent seen as the biggest scaled winner and Lumentum positioned to gain indirectly through tighter EML laser supply. The bank’s argument, however, was not that market share can shift overnight. It said near-term execution would be difficult because non-Chinese suppliers still face capacity limits, certification constraints, and dependence on Chinese indium phosphide, or InP, substrates. According to Reuters, the Trump administration and the Federal Communications Commission are preparing measures that would restrict new Chinese data-center components from entering the U.S. market, with optical modules specifically mentioned. Morgan Stanley said Chinese vendors currently account for about half of the optical module market through companies such as Innolight and Eoptolink, so any ban would force demand toward alternative suppliers. Still, the bank said existing production capacity is not enough to fully replace that share in the short run. Morgan Stanley also flagged two bottlenecks that could shape the outcome: insufficient non-Chinese production capacity and the global supply chain’s reliance on China for InP substrates. If restrictions are implemented, the bank expects a short-term supply shock, while the longer-term structural benefit to non-Chinese suppliers may take more time to emerge.

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Morgan Stanley says proposed U.S. curb on Chinese optical modules could open room for Coherent and peers
Policy Regula
2026-08-05 03:53:02

Wall Street splits on proposed U.S. curbs on Chinese optical modules for AI data centers

A proposed U.S. move to restrict imports of Chinese optical components used in AI data centers has quickly become a new trading theme for the optical module sector. U.S. optical communications names including Marvell, Coherent, Lumentum, Applied Optoelectronics and Corning rose overnight as capital rotated into the domestic supply chain, while related A-share names tied to North America’s AI buildout came under pressure. Wall Street’s early read is not uniform. Morgan Stanley argued that if Chinese optical transceivers are ultimately restricted from the AI data center supply chain, non-Chinese vendors could gain share, with Coherent seen as the clearest beneficiary and AAOI and Fabrinet also positioned to capture incremental demand. At the same time, the bank said implementation would be difficult because non-Chinese capacity is not enough to meet AI capex demand and key upstream materials such as InP substrates still involve Chinese suppliers. Citi took a more cautious line, saying any ban would be hard to turn into a simple rule. It noted that seven of the world’s top 10 optical transceiver companies are Chinese and that they supply more than 50% of high-speed optical modules to major U.S. cloud providers. Citi expects exemptions are likely under real supply-demand constraints and said investors are now watching whether final rules hit third-country capacity, whether North American cloud firms reallocate orders, and whether overseas factories run by Chinese suppliers can continue to serve as a buffer.

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Wall Street splits on proposed U.S. curbs on Chinese optical modules for AI data centers
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