According to the latest forecast by Yole Intelligence, the silicon photonics (SiPh) module market is entering a period of rapid growth. By 2029, the global market is expected to reach $10.3 billion, with an impressive compound annual growth rate (CAGR) of 45%. Among the segments, pluggable SiPh modules for data centers will take the largest share, projected to generate $5.3 billion in revenue (52% of the total). The telecom WDM segment will follow closely with $4.6 billion, accounting for 45% of the market. Other applications, including data center optical I/O, NPO&CPO architectures, wireless telecom, and miscellaneous sectors, will contribute a combined total of over $200 million.
In terms of volume, Yole reports that global SiPh module shipments are expected to reach nearly 6 million units in 2024, more than 12.5 million units in 2025, and could approach 18 million units by 2029—highlighting robust demand and rapid technological adoption.
Silicon Photonics Chips Growing in Parallel, CPO to Lead the Next Decade
Yole also projects that the SiPh chip market will reach $863 million by 2029, maintaining the same CAGR of 45% over the past five years. The data center pluggable module segment will dominate, with $651 million in chip sales, accounting for 75% of the total. The telecom WDM segment will grow to $171 million (20%), while smaller-scale segments—optical I/O interfaces, NPO&CPO architectures, and wireless applications—will show promising growth potential despite their limited current market sizes.
According to a separate report from LC, the global optical chip market in 2024 is valued at $1.7 billion, with SiPh chips comprising roughly one-third of the total. Although SiPh still holds a relatively small share, the entry of major foundries like TSMC and STMicroelectronics is accelerating industrialization. By 2030, the optical chip market is expected to exceed $5 billion, with SiPh market share doubling and overall size growing sixfold—positioning it as a vital enabler of next-generation high-speed connectivity.
Data Centers Drive SiPh Adoption: 800G and 1.6T in Focus
With emerging applications such as AI and large-scale models demanding higher bandwidth and power efficiency, optical modules are advancing from 400G to 800G and even 1.6T. According to ICCSZ, about 50% of current 800G modules use SiPh technology, compared to 20–30% in 400G modules. Although 1.6T modules face higher initial costs, they are expected to achieve rapid market penetration in the second half of 2025 as the technology matures and benefits from economies of scale.
A May 2025 report from LightCounting also emphasizes that while SiPh took nearly a decade to reach commercial-scale deployment, its growth has been accelerated by the commitment of companies such as Cisco, Intel, and Huawei. The rise of linear-drive pluggable optics (LPO) and co-packaged optics (CPO) is further pushing SiPh toward greater integration and energy efficiency. The report forecasts that SiPh module market share will rise from 30% in 2025 to 60% by 2030, becoming a dominant solution in optical connectivity.
Bright Outlook with Accelerating Ecosystem Deployment
Silicon photonics combines the advantages of photonics and CMOS technology, offering cost efficiency, high integration, excellent thermal management, and superior bandwidth performance. It is increasingly seen as a critical technology to support the growing demands of high-performance computing (HPC), AI model training, and telecom interconnects. With industry giants such as Broadcom and NVIDIA leading the charge, the SiPh module and chip ecosystem is maturing rapidly.
Looking ahead, CPO architectures are expected to become essential for complex ASIC systems within the next decade, and ongoing innovation in SiPh will inject new momentum into the entire optical communications industry.
