Top-tier optical module technology

High-performance optical modules today include 400G, 800G, and emerging 1.6T modules, with leading manufacturers leveraging silicon photonics, co-packaged optics, and high-power transceivers to meet data center, 5G, and AI network demands.

Leading Optical Module Types

• 400G Optical Modules: Widely deployed in hyperscale data centers, offering high bandwidth and low latency for cloud and enterprise networks. These modules are often used in QSFP-DD and OSFP form factors for short- and medium-reach interconnects .
• 800G Optical Modules: Rapidly becoming mainstream, especially in AI-driven data centers. They support ultra-high-speed interconnects and are increasingly produced using co-packaged optics (CPO) and silicon photonics for improved energy efficiency and miniaturization .
• 1.6T Optical Modules: Emerging technology entering early deployment and sampling validation, designed for next-generation high-performance computing and AI clusters .

Key Technologies Driving Performance

• Silicon Photonics (SiPh): Dominant for short-reach data center interconnects, enabling integration of multiple optical functions on a single chip, reducing size and power consumption .
• Co-Packaged Optics (CPO): Integrates optical modules directly with high-end chips (e.g., NVIDIA GB300), reducing electrical losses and improving bandwidth for AI and HPC applications .
• High-Power Optical Transceivers: Support long-reach and high-bandwidth applications, critical for 5G fronthaul, midhaul, and backhaul networks, as well as hyperscale data centers .

Top Manufacturers and Market Leaders

• Yuanjie Technology: Known for mass production of 200G PAM4 EML optical chips and high-volume shipments, competing globally with Broadcom and Lumentum .
• Zhongji Xuchuang: Leading 800G module market share (>30%) and first domestic producer of 1.6T modules, with projected shipments exceeding 5 million units .
• Mingyang Circuit: Specializes in 400G packaging substrates, enabling miniaturization and improved heat dissipation for high-density modules .
• Shijia Photon: Offers full-process IDM production of PLC splitter chips and high-power DFB laser chips suitable for CPO packaging .

Manufacturing Considerations

High-performance optical modules require precise manufacturing steps to ensure reliability and low signal loss:

1. Chip Mounting (Die Bonding): Accurate integration of optical and electrical chips onto substrates .
2. Wire Bonding: Fine gold wires connect chips to circuits for consistent signal performance .
3. Optical Coupling (Active Alignment): Sub-micron alignment of fibers and optical paths to minimize loss .
4. Sealing and Testing: Hermetic sealing and rigorous testing (bit error rate, eye diagrams, temperature cycling) ensure long-term stability .

Market Trends

• The optical module market is projected to exceed 150 billion yuan by 2025, driven by AI, 5G, and cloud computing .
• Asia-Pacific, particularly China, remains a dominant manufacturing hub due to strong production capabilities and digital infrastructure expansion .
• Rapid adoption of 400G and 800G modules is expected, with 1.6T modules entering early deployment stages . High-performance optical modules are now essential infrastructure for modern networks, enabling ultra-low latency, massive bandwidth, and energy-efficient interconnects across data centers, telecom, and AI-driven applications.