Lumentum: EML and CW Lasers for Photonic Integrated Circuits. Lumentum is an American company specializing in optical components and transceivers. This IDTechEx company profile assesses Lumentum's most recent earnings call in the context of the burgeoning AI infrastructure rollout and competitors technology portfolios - assessing its strengths in EML and CW laser production. Lumentum: EML and CW Lasers for Photonic Integrated Circuits.