Lumentum is accelerating beyond its previous financial targets as artificial intelligence infrastructure demand drives increasing adoption of optical connectivity across data centers. The company expects fiscal first-quarter 2027 revenue of $1.225 billion to $1.275 billion, putting the midpoint at $1.25 billion and allowing Lumentum to reach its target financial model more than a quarter ahead of schedule.
The outlook also points to another significant step higher in profitability. Lumentum expects a non-GAAP operating margin of 39.5% to 40.5% during Q1 and non-GAAP diluted EPS of $4.05 to $4.35.
The guidance follows a fiscal fourth quarter in which revenue more than doubled year-over-year to $1.006 billion from $480.7 million. Revenue also increased 24.5% sequentially from $808.4 million in Q3. Non-GAAP gross margin expanded to 50.4% from 37.8% a year earlier, while non-GAAP operating margin jumped to 36.6% from 15%.
Lumentum’s growth is increasingly tied to the rapid buildout of AI computing infrastructure. Management said data center architects are increasingly turning to optical links as AI workloads require greater bandwidth and faster connectivity, expanding the role of photonics beyond traditional data center networking.
Several emerging technologies are beginning to contribute to that opportunity. Lumentum highlighted growth in optical circuit switching solutions and its cloud module business, where the company is advancing adoption of 1.6T technology. It is also seeing increasing demand for ultra-high-power lasers used in co-packaged optics, or CPO.
The company received an initial order for external laser source modules and is engaged with multiple customers around near-packaged optics. Management believes these developments are early indications that optical technology is beginning to move inside the server rack, potentially increasing Lumentum’s total addressable market as AI systems become more dependent on high-speed optical connectivity.
Systems revenue was particularly strong during Q4, increasing 122.6% year-over-year to $356.9 million from $160.3 million. Components revenue increased 102.7% to $649.4 million. Systems represented 35.5% of quarterly revenue, while Components accounted for 64.5%.
The acceleration was also visible across the full fiscal year. Fiscal 2026 revenue increased 83.2% to $3.014 billion from $1.645 billion. Systems revenue increased 90.7% to approximately $1.008 billion, while Components revenue rose 79.7% to approximately $2.006 billion. Full-year non-GAAP operating margin reached 29.8% compared with 9.7% in fiscal 2025.
Lumentum generated $406.4 million of Adjusted EBITDA during Q4, up from $293.5 million sequentially and $98.7 million a year earlier. Full-year Adjusted EBITDA reached approximately $1.026 billion compared with $264.2 million in fiscal 2025.
Non-GAAP Q4 net income reached $326.3 million, or $3.23 per diluted share, compared with $63.3 million, or $0.88 per share, a year earlier. For the full fiscal year, non-GAAP net income increased to $782.3 million from $146.4 million.
The company’s GAAP results were heavily affected by an unusual accounting charge. Lumentum reported a Q4 GAAP net loss of approximately $7.16 billion after recording a $7.8 billion one-time, non-cash loss on debt extinguishment related to the equitization of certain convertible notes. The transaction involved exchanging common shares to settle portions of its 2026, 2028 and 2029 notes.
Lumentum ended fiscal 2026 with approximately $2.7 billion of cash, cash equivalents and short-term investments, up approximately $1.9 billion from the end of fiscal 2025.
KEY QUOTES:
“Lumentum is positioned at the heart of a secular industry shift. As AI compute workloads increase in both speed and bandwidth, data center architects are turning to optical links as a primary means of connectivity. While our Q4 results demonstrate broad-based traction, key growth drivers such as OCS solutions and our cloud module business, where we are advancing 1.6T adoption, are beginning to layer in.”
“Increasing demand for ultra-high-power CPO lasers, an initial order for ELS modules, as well as our breadth of NPO engagements are the first signs that optics are starting to penetrate in-rack connectivity, significantly upping our optical TAM.”
“Looking ahead, our trajectory continues to accelerate as AI demand drives our Q1 revenue guidance midpoint to $1.25 billion, reaching our target model more than a quarter ahead of schedule.”
Michael Hurlston, President And CEO Of Lumentum
