Question · Q2 2026
Ryan Koontz focused on the transceiver market's transition to 1.6T, asking if EMLs are the primary driver and about the readiness of Silicon Photonics (SiPh) for 1.6T. He also inquired about Lumentum's laser supplier opportunities for this transition. In a follow-up, he asked for an update on plans to vertically integrate CW lasers for 1.6T and then questioned the competitive landscape for CPO laser opportunities compared to the transceiver laser market, seeking insights on barriers to entry and Lumentum's capabilities.
Answer
Michael Hurlston, President and CEO, explained that initial 1.6T transceivers are heavily EML-based, with 200G EMLs accelerating faster than anticipated, while still expecting SiPh to dominate 1.6T transceiver shipments. He confirmed that vertical integration of CW lasers for 1.6T transceivers is still planned, though the timeline has shifted slightly to late Q2/early Q3. For CPO, Michael Hurlston highlighted Lumentum's strong position due to high-power laser capabilities (400 milliwatts) and proven reliability from subsea applications, which he believes creates higher barriers to entry and customer confidence. Wupen Yuen, President, Global Business Units, added that both WDM-based (EML dominant) and parallel fiber-based (SiPh dominant) solutions are growing hand-in-hand for 1.6T applications, contributing to higher module-level gross margins.
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