As AI computing infrastructure continues to expand, high-speed optical modules—including 800G, 1.6T, and 3.2T—are evolving rapidly. Ceramic components, which support heat dissipation, electrical insulation, and device packaging, are entering a new period of growth in both demand and product value.
According to offline supply chain research conducted by CLS in early July and cross-checked by several industry information providers, China’s optical module ceramic component market is expected to reach RMB 13.5 billion in 2026.
Ceramic substrates are estimated to account for RMB 9.9 billion, while ceramic packages, TEC heat-dissipation ceramics, and other supporting components represent approximately RMB 3.6 billion.
The market is projected to expand to RMB 20–22 billion in 2027, representing annual growth of more than 60%. This would make optical module ceramics one of the high-growth upstream segments within the AI computing infrastructure supply chain.
The main driver behind this growth is not only the increasing number of optical modules but also the higher value of ceramic components required by each new generation.
Optical modules at 400G and below can generally use lower-cost alumina ceramics, limiting the value of ceramic material used in each module.
As the industry moves toward 800G, higher-thermal-conductivity aluminum nitride ceramic components are increasingly being considered for areas with demanding thermal requirements.
For 1.6T optical modules, ceramic components are estimated to account for approximately 8%–12% of the total module cost. This creates two sources of growth: increasing optical module shipments and higher ceramic value per module.
Aluminum nitride ceramic has become an important thermal management material for high-speed optical modules.
With thermal conductivity typically ranging from 170 to 230 W/m·K, AlN can help transfer concentrated heat away from laser devices, driver ICs, and other heat-generating components. This supports more stable operation in 1.6T, 3.2T, and other high-density optical systems.
AlN also combines electrical insulation with relatively low dielectric loss, making it suitable for high-frequency and high-speed signal environments. Its coefficient of thermal expansion is close to that of silicon, helping reduce thermal stress between ceramic parts, semiconductor chips, and metallized layers during repeated heating and cooling.
These properties also make AlN a promising material for next-generation co-packaged optics, commonly known as CPO.
Strong demand is developing alongside a structural supply challenge.
High-end aluminum nitride powder, ceramic substrates, and related products have traditionally been concentrated among a limited number of established suppliers, particularly in Japan.
Two factors have made the supply situation more difficult. First, the availability of some overseas raw materials has tightened. Second, building and stabilizing a high-end ceramic production line can take more than two years, meaning that new production capacity cannot be added quickly.
As a result, delivery times for certain high-end substrates have become longer, while prices have gradually increased. The imbalance between supply and demand is unlikely to be resolved immediately.
Producing ceramic components for advanced optical modules involves more than forming and sintering.
The industry has several important technical and commercial barriers:
High-purity ceramic powder preparation
Micron-level tape casting and controlled sintering
High-precision metallization and circuit patterning
Flatness and surface-finish control
Stable thermal conductivity between production batches
Customer qualification cycles lasting two to three years
These requirements limit the number of manufacturers capable of supplying high-end optical module ceramic components consistently and in volume.
CERAMPRO provides customized ceramic substrates and plates made from alumina, aluminum nitride, silicon nitride, and other advanced ceramic materials for thermal management, electronic packaging, and optoelectronic applications.
To reduce supply chain risk, downstream optical module manufacturers are accelerating the qualification of local suppliers and gradually introducing domestically produced ceramic components.
Local sourcing is shifting from an optional purchasing strategy to an important part of supply chain planning. However, suppliers must still meet strict requirements for material consistency, dimensional accuracy, metallization quality, surface condition, and production traceability.
This gives qualified ceramic manufacturers an opportunity to participate in the growth of the global optical communication supply chain.
From 800G to 1.6T and 3.2T, each generation places greater demands on thermal management and packaging materials. Increasing shipments, combined with higher ceramic value per module, support continued market expansion.
CPO brings optical and electronic components closer together, increasing thermal density and placing greater demands on heat-spreading and electrically insulating materials. As the technology moves toward commercial adoption, it could create additional demand for advanced ceramic substrates and structural components.
The localization rate of high-end ceramic substrates remains relatively low. As overseas capacity remains constrained, qualified domestic suppliers have an opportunity to gain a larger share of both domestic and international projects.
With an existing market estimated at RMB 13.5 billion and the potential to grow beyond RMB 20 billion, optical module ceramics are emerging as an important upstream segment within the AI computing infrastructure supply chain.
While market attention often focuses on optical module manufacturers, the ceramic materials supporting heat dissipation, electrical insulation, and packaging reliability are also gaining strategic value.
As optical modules continue to move toward higher speeds and greater power density, the performance and supply stability of ceramic components will become increasingly important.
CERAMPRO supports customized ceramic substrates, heat-dissipation components, package bases, and precision structural parts for optical communication applications. Prototype development, small-batch validation, and volume manufacturing are available based on customer drawings and technical requirements.
Email: sales@cerampro.com
WhatsApp: +86 181 2384 0527
Website: www.cerampro.com
Data Source: EEFOCUS Industry‑Chain Research
