The Trigger for Phase Two of the Optical Trade Was Geopolitics, Not Technology

Damnang · Damnang’s Substack · August 04, 2026 at 14:13 · ⏱ 7 min read  | Read on Substack ↗
Summary
The article argues that the recent surge in optical stocks was triggered by geopolitical developments—specifically, proposed US restrictions on Chinese optical transceivers—rather than new technological breakthroughs. This policy shift could redistribute future data center optical volume away from dominant Chinese suppliers toward non-Chinese alternatives, though capacity constraints mean the transition will likely be gradual rather than an immediate ban.
  • •The Trump administration is reportedly drafting a plan to block imports of newly introduced Chinese data center components into the US.
  • •China's Zhongji Innolight holds an estimated 27% of the global market for data center optical transceivers, with approximately 90% of its revenue coming from outside China.
  • •An immediate ban on existing Chinese products is unlikely because non-Chinese suppliers like COHR and LITE currently lack the capacity to replace the displaced volume, which could delay US hyperscaler AI cluster construction.
  • •The most realistic policy scenario is a transition period where existing qualified products remain in use, but new designs (new 800G revisions, 1.6T products) prioritize non-Chinese suppliers.
  • •The market reacted to the potential redistribution of future volume away from Chinese suppliers, rather than a new forecast of overall optical demand growth.
  • •Upcoming earnings reports in August must validate the rally by proving that non-Chinese suppliers have the scale, capacity, and execution to absorb incremental orders.
Read time 7 min
Length 7,981 chars
Category finance
Ideas
Damnang Substack author, Damnang’s Substack
Upcoming earnings must validate the optical rally by showing evidence that expanded 800G and 1.6T capacity is translating into actual shipments, and clarifying the allocation between internally produc
Upcoming earnings must validate the optical rally by showing evidence that expanded 800G and 1.6T capacity is translating into actual shipments, and clarifying the allocation between internally produced components versus complete modules.
AAOI MED
Damnang Substack author, Damnang’s Substack
Author notes COHR is treated as a potential substitute for Chinese suppliers and must demonstrate scale and execution in its Aug 12 earnings, specifically regarding 800G/1.6T module capacity and indiu
Author notes COHR is treated as a potential substitute for Chinese suppliers and must demonstrate scale and execution in its Aug 12 earnings, specifically regarding 800G/1.6T module capacity and indium phosphide lasers. Risk: May not currently have enough capacity to replace Chinese suppliers' total volume in a short period.
COHR
Damnang Substack author, Damnang’s Substack
Author highlights LITE's Aug 11 earnings to see if tight supply for data center lasers and 800G/1.6T demand is driving higher margins, noting it competes directly with Chinese suppliers.
Author highlights LITE's Aug 11 earnings to see if tight supply for data center lasers and 800G/1.6T demand is driving higher margins, noting it competes directly with Chinese suppliers. Risk: The investment case requires higher content and stronger positioning in next-gen optical sources, as a mere shift in final module assembly away from China might not benefit component suppliers equally.
LITE
Damnang Substack author, Damnang’s Substack
Author points to FN's Aug 17 earnings to monitor if customers are shifting optical module manufacturing to its Thailand platform, making non-Chinese manufacturing platforms increasingly valuable.
Author points to FN's Aug 17 earnings to monitor if customers are shifting optical module manufacturing to its Thailand platform, making non-Chinese manufacturing platforms increasingly valuable. Risk: Geographic diversification of manufacturing supply chains may happen slower than anticipated.
FN
Damnang Substack author, Damnang’s Substack
Author states MRVL supplies optical DSPs used inside transceivers and its Aug 27 earnings must show meaningful increases in market share and non-Chinese customer exposure.
Author states MRVL supplies optical DSPs used inside transceivers and its Aug 27 earnings must show meaningful increases in market share and non-Chinese customer exposure. Risk: A shift in module production from Chinese to American suppliers does not necessarily increase the total number of transceivers (and thus DSPs) required.
MRVL
Damnang Substack author, Damnang’s Substack
Author notes AEHR could see indirect, longer-term benefits from the geopolitical shift through increased demand for semiconductor and photonics testing.
Author notes AEHR could see indirect, longer-term benefits from the geopolitical shift through increased demand for semiconductor and photonics testing. Risk: Benefits are indirect and longer-term compared to direct transceiver manufacturers.
AEHR
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This newsletter, published August 04, 2026, features Damnang discussing AAOI, COHR, LITE, FN, MRVL, AEHR. 6 trade ideas extracted by AI with direction and confidence scoring.

Speakers: Damnang  · Tickers: AAOI, COHR, LITE, FN, MRVL, AEHR