Broadcom reported its Q2 fiscal year 2026 earnings, with AI semiconductor revenue reaching $10.8 billion, a 143% year-over-year increase. Lumentum announced its Q4 fiscal year 2026 earnings, with total revenue reaching $1.006 billion, up 109.3% year-over-year, including a 122.6% growth in systems business and 102.7% growth in components business. Lumentum CEO Michael Hurlston stated that the company achieved its target operating model a quarter ahead of schedule, with non-GAAP operating margin soaring 2160 basis points to 36.6%. The performance of both companies highlights the increasingly central role of optical technology in AI infrastructure development.