April 23, 2025, Shenzhen, China. – To address the demands for high-speed, high-density, and cost-efficient modern data centers, GIGALIGHT, a global leader in open optical networking, has officially launched its 400G QSFP-DD SR4 to 4×100G single-lane QSFP28/SFP112 SR1 economical short-reach data center interconnection solution. This product leverages innovative architectural design to significantly reduce deployment complexity and total cost of ownership (TCO), offering a flexible and efficient connectivity option for cloud computing, AI compute clusters, and hyperscale data centers.

Table 1: Core Product Technical Specifications

High-Density Elastic Architecture

• Modular Design: The 400G QSFP-DD SR4 acts as an upstream port, branching into four independent 100G QSFP28/SFP112 SR1 downstream links via multimode/single-mode fiber, supporting 1:4 non-blocking transmission. This design increases single-port bandwidth utilization by 300% and conserves switch port resources.
• Cross-Platform Compatibility: Deeply aligned with mainstream data center Top of Rack (TOR) architectures, it seamlessly integrates with NVIDIA, Broadcom, and other leading switch chip platforms.

Single-Lane Technology Revolution

• Proprietary Innovation: Based on GIGALIGHT’s single-lane 100G PAM4 modulation technology, this solution overcomes traditional parallel multi-fiber schemes, enabling stable 100-meter transmission over OM4 multimode fiber with 20% lower power consumption than comparable alternatives, meeting stringent energy efficiency requirements for SR short-range scenarios.
• Spectral Efficiency: By carrying 100G data on a single wavelength, it reduces fiber resource usage and enhances transmission density.

Cost-Effective Deployment

• Cost Optimization: Compared to traditional 400G full-optic module networks, this solution reduces high-speed optoelectronic conversion units by 75%, lowering equipment procurement costs. The 100G single-lane transmission also minimizes fiber usage, further reducing construction expenses.
• Rapid Deployment: Supports hot-swappable and plug-and-play functionality, requiring no changes to existing cabling infrastructure and cutting deployment timelines by 60%.

Full-Scenario Compatibility

• Flexible Configuration: Downstream ports can switch between 100G QSFP28 SR1 or 100G SFP112 SR1, ensuring compatibility with existing 100G equipment and emerging single-lane standards, safeguarding customer investments.

Typical Application Scenarios

• AI/GPU Cluster Interconnection: Enhances data transfer efficiency between compute nodes via low-latency, high-bandwidth connections, reducing power consumption.
• Cloud Data Center Spine-Leaf Architecture: Optimizes east-west traffic, alleviates core layer bandwidth strain, and improves network scalability.
• Storage Network Upgrades: Seamlessly integrates with high-speed storage protocols like NVMe over Fabric, accelerating data read/write speeds.

Industry Insights and Future Outlook
With the explosive growth of AI and compute demands, data centers urgently require cost-effective 400G/100G interconnection solutions. GIGALIGHT’s innovative design balances performance and cost, enabling customers to transition smoothly to next-generation network architectures at minimal expense. Looking ahead, GIGALIGHT will continue to advance single-lane technology, driving data center interconnection toward higher density and lower power consumption.

GIGALIGHT’s latest solution not only provides a new choice for data center interconnection but also leads the industry toward more efficient and economical futures through technological innovation.

About GIGALIGHT

As an open optical networking explorer, Gigalight integrates the design, manufacturing, and sales of both active and passive optical devices and subsystems. The company’s product portfolio includes optical modules, silicon photonics modules, liquid-cooled modules, passive optical components, active optical cables, direct attach copper cables, coherent optical communication modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications such as data centers, 5G transport networks, metropolitan WDM transmission, ultra-HD broadcast and video, and more. It stands as an innovative designer of high-speed optical interconnect hardware solutions.