POET Technologies Inc. (NASDAQ:POET) is one of the 12 Best Photonics Stocks to Buy Now. On April 27, 2026, POET Technologies Inc. (NASDAQ:POET) announced that Marvell Semiconductor wiped out all purchase orders for Celestial AI. It includes initial production units announced in April 2023, after Marvell claimed the company violated confidentiality obligations by spilling order […]