technologyScore 35/100Research
Coherent shipping first 6-inch indium phosphide wafer products; yields exceed 3-inch lines by 4x with 50% cost reduction
Jim Anderson· Coherent Corp· AI· 2026-05-06· about Coherent Corp (COHR)
“6-inch versus 3-inch yields more than four times as many devices at less than half the cost. We already saw that contribute to gross margin expansion in our fiscal Q3... The team has executed ahead of plan on raw capacity, and we are seeing very healthy yields. We are in production on three device types—EML, CWs, and PDs—and all three have yields on 6-inch that are higher than our 3-inch production yields.”
Why it matters
6-inch indium phosphide wafer technology represents a major step-change in photonic component yield and cost efficiency. Coherent's successful ramp demonstrates this technology is production-ready and translating directly to margin expansion.
Investment implication
Equipment suppliers and materials vendors serving advanced wafer production (6-inch indium phosphide tools, process chemicals) should see accelerated demand. Competitors lacking 6-inch capability face cost and yield disadvantages. Customers receiving 6-inch-based components see lower cost of goods sold.