Lumentum Compares Favorably to Coherent in AI Infrastructure

Seeking Alpha's May 22, 2026 article compares Lumentum Holdings Inc. (LITE) and Coherent Corp. (COHR), presenting seven charts that the author uses to argue LITE is the superior AI-infrastructure play. The article reports a Seeking Alpha data snapshot showing LITE market cap $62.24B, forward PE 116.84, rev growth (YoY) 68.98%, short interest 13.15%, and a recent share-price move into the $900s, per Seeking Alpha.

The Seeking Alpha piece attributes the sector momentum to a "tectonic shift toward InP-based lasers" replacing older VCSEL technology, which the author frames as tied to data-center architecture changes and a related optical-components supercycle. The article presents comparative charts on revenue growth, margins, and valuation multiples for the two firms, but does not publish primary engineering benchmarks or vendor roadmaps in the scraped preview.

Editorial analysis: For practitioners, the relevance is twofold. First, InP-based lasers and higher-performance optical components materially affect data-center link budgets, thermal budgets, and board-level integration choices; comparable industry transitions historically increase demand for vendors with tight process control and high-yield photonics fabs. Second, high forward multiples reported for LITE indicate investor expectations that must be met by execution, which raises scrutiny on supply-chain scaling and customer qualification timelines.

Industry context: Public coverage frames this comparison as part of a broader investor narrative that hardware-layer optics are a non-software chokepoint for scaling AI datacenters. That pattern matters to ML infrastructure teams because vendor mix, lead times, and component performance feed directly into rack-level throughput and total cost of ownership calculations.

Monitor company-reported quarterly revenue and backlog figures, disclosed customer qualification milestones, and reported capacity expansions. Observers should also follow valuation changes versus realized growth; the Seeking Alpha article explicitly warns of overvaluation risk while preferring LITE based on the presented charts.