As data centers race towards 800G and 1.6T speeds, the heat generated by DSP chips and optical components has become the ultimate bottleneck. Traditional air cooling is hitting its physical limits. The Copper 3D printed liquid-cooled optical module is emerging as the revolutionary solution, combining the unparalleled thermal conductivity of copper with the geometric freedom of additive manufacturing to keep next-gen networks running cool and fast.
Modern high-speed optical modules (800G, 1.6T, and future 3.2T) pack immense processing power into incredibly small form factors (like OSFP or QSFP-DD). The core DSP (Digital Signal Processor) chip generates extreme heat fluxes that traditional heat sinks and fans simply cannot dissipate efficiently.
Liquid cooling solves this by bringing the coolant directly to the heat source. However, integrating liquid cooling into the tight, complex internal space of an optical module presents a massive manufacturing challenge. This is where 3D printed copper
1. Micro-Structures for Maximum Heat Transfer
Traditional manufacturing cannot create the intricate internal channels needed for optimal cooling in such a small space. 3D printing allows for the creation of dense micro-fins, lattice structures, and hollow cavities directly inside the module's heat dissipation base. These structures drastically increase the surface area for heat exchange, rapidly transferring concentrated heat from the DSP chip to the coolant.
2. Monolithic Integration & Leak Prevention
In a liquid-cooled optical module, reliability is paramount. Traditional assembly often involves welding or bonding multiple parts, creating potential leak points that could destroy sensitive optical components. 3D printing enables monolithic (one-piece) manufacturing of the copper heat sink and cooling channels. With no joints or welds, the risk of coolant leakage is fundamentally eliminated, ensuring long-term stability in data center environments.
3. Superior Material Properties: Copper Alloy vs. Pure Copper
While pure copper has excellent thermal conductivity, it is soft and difficult to machine. Advanced 3D printing now utilizes high-strength copper alloys (like CuCrZr). These alloys achieve thermal conductivity reaching 95% of pure copper while doubling the hardness (up to HB90-110). This increased strength prevents scratches and damage during the precise assembly of optical modules, significantly improving yield rates and user experience.
How does a Copper 3D printed liquid-cooled optical module perform in reality? Xiaojiao 3D Printing has successfully passed a series of rigorous performance tests, proving that our modules not only meet but exceed industry standards for 800G/1.6T products.
Comprehensive Reliability Testing: Our modules have passed PCT (Highly Accelerated Temperature and Humidity Stress Test), UBDH (Double 85 Test), Salt Spray Test, Hot Hast Test, and wind resistance performance tests. These results confirm our capability to stably adapt to the complex operating conditions of long-term optical module deployment.
Precision Control & Microstructure Density: Through two key strategies—screening compatible copper alloy powders and optimizing printing process parameters—Xiaojiao achieves a sample microstructure density of 99.50%, ensuring top-tier sample performance and reliability.
Superior Thermal & Airtight Performance: In air cooling tests, compared to the heat source temperature, our copper alloy samples reduced temperatures by 3–5°C compared to extruded aluminum and by 5–6°C compared to zinc alloys. Furthermore, our proprietary airtightness tests using helium leak detection on the printed cavity revealed zero leakage points, achieving a vacuum level of 1×10⁻¹¹ Pa·m³/s.
Printing copper has historically been difficult due to its high reflectivity to standard infrared lasers (absorbing less than 5% of the energy). Two main technologies are driving the production of liquid-cooled optical modules:
Green Laser SLM (Selective Laser Melting): Green lasers (515nm wavelength) are absorbed roughly 10x better by copper than infrared lasers. This allows for precise melting of copper powder to create the dense, micro-finned structures required for optical module heat sinks.
Alloy Optimization & Process Tuning: Some manufacturers add specific alloying elements to the copper powder to increase laser absorptivity during the printing process. Combined with "solution + aging" heat treatment, this balances the strength and thermal conductivity required for high-performance optical modules.
Looking ahead, Xiaojiao 3D Printing is deeply committed to the evolution of optical communication thermal management. We are not just a manufacturer, but a strategic partner shaping the future of high-speed connectivity.
End-to-End Mass Production Capability: Xiaojiao has established a complete chain from material design and powder manufacturing to low-cost, high-volume 3D printing. We are continuously expanding our production capacity according to customer needs to consistently meet market demands.
Comprehensive Product Portfolio: Our roadmap includes a full range of copper alloy thermal management products, covering air cooling, liquid cooling, and VC (Vapor Chamber) solutions. We are officially ushering in the mass production era of copper alloy 3D printing.
Pushing the Thermal Limits: As chip power consumption increases, we are investing in R&D for ultra-fine microchannel structures (below 0.1mm) and next-generation copper composites. This will further enhance heat dissipation efficiency for future 3.2T optical modules.
Producing Copper 3D printed liquid-cooled optical modules requires extreme precision and specialized thermal expertise.
Specialized Copper Expertise: We master both green laser SLM and advanced copper alloy processes, ensuring your optical module heat sinks achieve >99.5% density and maximum thermal transfer efficiency.
Micro-Feature Precision: Our technology can print the intricate micro-channels and thin-walled fins (down to 0.1mm) essential for fitting inside compact optical module housings without compromising structural integrity.
End-to-End Thermal Solutions: From DFM (Design for Manufacturability) analysis to rigorous leak and thermal testing, we ensure your liquid-cooled modules are ready for mass deployment in AI data centers.
Ready to cool down your next-gen optical network?
Don't let heat throttle your data speeds. Contact Xiaojiao Copper 3D Printing.
xiaojiao2024@gmail.com
(+86)135 9042 3495
Building 5, Huafeng Industrial Park, Guangtian Road, Luotian Community, Yanluo Street, Bao'an District, Shenzhen
Min. Order: 1 pieces
Free design optimization | MOQ: 1 unit