Marvell's Lumentum deal gives optical DSP rivals until 2028 to court its customers

This isn't a valuation story—it's a structural threat to the optical module ecosystem. Marvell's Nova DSP already commands dominant share in 800G/1.6T transceiver signal processing. Layering Lumentum's EML laser sources on top means one vendor simultaneously controls PAM4 equalization, FEC correction, and photon generation. For module makers like Innolight and Coherent, that's not synergy—it's the elimination of mix-and-match leverage. The 2028 horizon is the real tell: it maps to multi-year customer qualification contract expirations. Broadcom's Credo division and Credo Semiconductor will exploit this defined window with aggressive co-development offers and price undercutting, likely within two quarters. The all-stock structure signals Marvell's balance-sheet caution, but dilution hits at the exact moment 3.2T DSP R&D demands peak capital. Antitrust reviewers in the US and EU will scrutinize whether DSP-plus-optical-component bundling creates a de facto monopoly in the transceiver value chain. Over 12–24 months, expect module makers to accelerate second-source qualification as a structural hedge. The true casualty isn't Lumentum—it's the module ecosystem's collective pricing power, which erodes the moment vertical integration removes the competitive tension that kept component costs in check.