Photonics still has room for a memory-type run because new laser capacity takes years to reach customers. Despite the sector's big gains, the upside still looks enormous: Lumentum's CEO says it is effectively sold out through early 2029, versus 2028 a few months ago. It cannot meet about 70% of demand for some products through next year and about 30% for others through 2028; relief is not expected before 2029-30. x.comÂ


