For most of its history, the photonics industry was a supporting actor — fiber that carried someone else's data, lenses inside someone else's camera. That positioning is being retired in 2026. As AI computing scales into configurations that copper simply cannot sustain, optics has become load-bearing infrastructure, and the financial figures are starting to reflect it.
The market has passed $1 trillion. The global photonics market reached approximately $988 billion in 2025 and crossed $1 trillion in 2026, according to estimates from Mordor Intelligence and Grand View Research. Mordor pegs the 2026 figure at $1.046 trillion, with a 5.8% CAGR through 2036 taking the market toward $1.84 trillion. That headline number encompasses everything from medical imaging and industrial lasers to LiDAR and display technology — but the structural story in 2026 is being written entirely by one segment.
The optical transceiver market is growing at 57–60% year-on-year. TrendForce projects the global market for AI-focused optical transceivers will expand from $16.5 billion in 2025 to $26 billion in 2026, representing over 57% year-on-year growth, driven by both specification upgrades and a broader structural reshaping of the optical communications supply chain. Yole Group's separate analysis arrives at a similar conclusion: from $23.4 billion in 2025, the global optical transceiver market is projected to reach $112.3 billion by 2031, representing a 30% CAGR for datacom applications, with AI training and inference infrastructure expected to account for more than 90% of total market revenue by the end of the forecast period. TrendForceCompoundsemiconductor
Why copper is losing. The core problem is physics. As AI server racks scale to hundreds of thousands of GPUs clustered together, the data volumes moving between processors, servers, and racks have exceeded what copper interconnects can handle at acceptable power and distance budgets. Traffic at hyperscale data centers in North America has sustained over 30% annual growth, prompting cloud giants such as Google, Microsoft, and Meta to expand GPU and AI server deployments, which has further boosted procurement of high-speed optical interconnects. Taipei Times
Silicon photonics is winning the platform battle. Silicon photonics has emerged as the dominant technology platform for next-generation optical interconnects, supported by its ability to deliver improved bandwidth density, lower power consumption, and a natural migration path toward co-packaged optics. Silicon photonics is on track to command more than 50% of the optical transceiver market in 2027, according to a TSMC vice president speaking in late August 2026, with 2028 expected to trigger a "massive new" wave of growth as AI technology upgrades accelerate. CompoundsemiconductorTaipei Times
The 1.6-terabit-per-second generation is already entering commercial production. Commercialisation of 1.6T transceivers in 2026 marks the latest stage in the industry roadmap, while 3.2T products are expected to begin sampling around 2027. The transition from pluggable optics to co-packaged optics is underway, with CPO forecast to account for approximately 35% of optical modules used in AI data centres by 2030. GlobeNewswire
Foundries are committing capital. Tower Semiconductor raised its 2026 capital expenditure budget for silicon photonics and silicon germanium by $270 million on top of the $650 million announced in late 2025. STMicroelectronics plans to quadruple silicon photonics production capacity by 2027, supported by long-term capacity reservation commitments from customers, and recently entered high-volume production for its SiPh-based PIC100 platform. The Metalnomist
The bottleneck is components, not demand. In response to tightening component supply, leading players including Coherent, Lumentum, and Applied Optoelectronics have initiated capacity expansions, as component shortages have been identified as the primary capacity expansion bottleneck in the AI optical transceiver market. TrendForce
What this means beyond data centers. The AI-driven surge is the loudest signal, but it isn't the only one. The upgraded demand outlook also reflects rising requirements from agentic AI, physical AI, humanoid robots, autonomous vehicles, and military systems — each of which increases demand for optical transceivers, modulators, photodiodes, lasers, and high-speed detection systems. The photonics industry is, for the first time, demand-constrained across multiple end markets simultaneously. The Metalnomist
The question heading into 2027 is whether capacity — in silicon photonics foundries, in laser chip supply, in advanced packaging — can be built fast enough to meet an AI infrastructure buildout that shows no signs of pausing.
Sources: Yole Group 'Optical Transceivers for Datacom & Telecom 2026'; TrendForce AI Optical Transceiver research, April 2026; Mordor Intelligence Photonics Market Report 2026; Grand View Research; LightCounting; Taipei Times / TSMC, September 1 2026.