MediumV Technology Geopolitics & AI9 October 2026, Friday
Fear of FCC curbs hammers Chinese optical chipmakers for a second day
Chinese laser chip suppliers fell sharply on 8 and 9 October on expectations that the US Federal Communications Commission (FCC) could restrict Chinese optical transceiver makers. A Morgan Stanley note on 1 October said curbs could come in October and target 3.2-terabit products.
According to a round-up by EFY, Yuanjie Semiconductor and Suzhou Everbright Photonics hit the 20% daily limit-down on 8 October, the first session after the holiday. On 9 October they lost a further 6.5% and 5.4% respectively. Large module makers were less affected: China's two biggest suppliers of data centre optics fell 2.5% in Hong Kong and 2.14% in Shenzhen. An optical transceiver is the component that converts data moving between servers in a data centre into light signals.
According to the Morgan Stanley note, Washington could allow Chinese-made modules in which at least 65% of material costs come from the US. That condition would squeeze upstream Chinese laser chipmakers the hardest. Dongshan Precision said the figure was mere market speculation but did not rule out building a plant in the US if needed. Everbright said commercial production of 3.2-terabit products would not begin before 2028–2029. The rules the FCC finalised in September did not target any product by name.
Pressure had been building. On 25 September four US senators introduced a bill banning Chinese-made optical modules from classified federal government systems and naming two large Chinese manufacturers. Counterpoint estimated in August that Chinese makers hold about two-thirds of global unit supply, and the market leader alone holds 27% of the data centre transceiver market. The same firm says Western rivals cannot match that volume within two years.
Talay assessment
Bottom line
Markets are pricing a US move to cut dependence on China in the connectivity layer of AI data centres. Western supply cannot match Chinese volumes within two years. The likeliest curb is therefore not a broad ban but a content requirement aimed at next-generation products and upstream components. In that case Chinese laser chip suppliers bear more of the burden than module makers.
Likely effects
- Chinese optical supply chainNegative1–6 months
A possible 65% US content requirement pushes Chinese module makers to use US components instead of domestic laser chips; the export market for upstream Chinese suppliers shrinks.
- US data centre costsNegative1–6 months
Restricting Chinese modules while Western supply is tight raises the cost and lead times of next-generation optical interconnects.
- Production relocationUncertain6 months+
Dongshan not ruling out a US plant suggests Chinese makers will shift capacity to the US and third countries to get round the curbs.
Possibilities, ranked
- 1Targeted content requirement55%
The FCC issues a conditional restriction aimed only at next-generation products and upstream components; existing 800G and 1.6T products are unaffected.
Watch: Equipment authorisation decisions on the FCC's October–November agenda
- 2Curbs postponed30%
With US–China ceasefire talks under way, Washington holds the step in reserve as a bargaining chip.
Watch: Statements on the November APEC summit and the ceasefire timetable
- 3Broad import ban15%
Imports of all new Chinese-made optical transceiver models are banned.
Watch: Publication in the Federal Register of a rule on Chinese-made optical modules
Probabilities are calibrated judgement based on the sources, not measurement, and are revised as new information arrives. Not investment advice.
Market reaction
Indicators affected
- Laser chipmaker, 8 Oct▼ −20%
- US content requirement (reported)▼ 65%
- China's global unit share▼ ~2/3