Question · Q2 2026
Michael Mani asked about the gross margin leverage driven by the 6-inch Indium Phosphide ramp, both currently and over the next few quarters as supply doubles. He also inquired about the biggest contributors to achieving the long-term gross margin target of 42%, and the mix shift between EML and Silicon Photonics for 1.6T, as well as the impact of CPO on CW laser capacity needs.
Answer
CEO Jim Anderson explained that 6-inch Indium Phosphide production, which started in the September quarter, is beginning to show benefits this quarter, with the cost advantage (half the cost of 3-inch) building as half of internal capacity runs on 6-inch by year-end. CFO Sherry Luther identified cost reductions (product input costs, yield improvements) and pricing optimization as the biggest contributors to the >42% gross margin target, noting a 470 basis point improvement from FY2024. Mr. Anderson stated that the EML vs. Silicon Photonics mix for 1.6T depends on customer application, with no significant financial difference for Coherent. He confirmed ramping Indium Phosphide capacity for both transceiver demand and high-power CW laser demand for CPO.
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