Unlocking 5G Backhaul with 400G QSFP-DD FR4: Scalable, Efficient Optical Connectivity
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Introduction: The Rising Demand for 5G Backhaul Bandwidth
With the rapid global expansion of 5G networks, mobile operators and cloud service providers are under increasing pressure to upgrade their transport and backhaul infrastructure. As 5G pushes fiber deeper into the network and densifies small cells, traditional backhaul solutions fall short in bandwidth, distance, and energy efficiency. Enter the 400G QSFP-DD FR4, a game-changer in enabling scalable, long-reach, and cost-efficient optical connectivity for modern 5G backhaul networks.
What is 400G QSFP-DD FR4?
The 400G QSFP-DD FR4 is a compact, high-performance transceiver module that uses 4x100G PAM4 lanes over single-mode fiber (SMF). It operates at 1271/1291/1311/1331nm CWDM wavelengths and supports transmission distances of up to 2 km, ideal for centralized RAN (C-RAN) and metro aggregation networks.
Key Specifications:
| Feature | Specification |
|---|---|
| Form Factor | QSFP-DD |
| Data Rate | 400Gbps (4x100Gbps PAM4) |
| Reach | Up to 2km over single-mode fiber |
| Connector Type | Duplex LC |
| Power Consumption | <12W typical |
| Compliant Standards | IEEE 802.3cu, QSFP-DD MSA |
Why 400G QSFP-DD FR4 is Ideal for 5G Backhaul
1. Long-Reach with High Bandwidth
400G FR4 modules are engineered for long-distance links between baseband units (BBUs) and centralized switches. The 2km reach makes them perfect for fronthaul/backhaul in urban deployments where small cells and distributed units (DUs) are scattered across wide areas.
2. Compact & High-Density
QSFP-DD allows eight lanes of electrical interface in a single compact form factor, maximizing front-panel density in core and aggregation routers.
3. Reduced OPEX with Low Power Consumption
Operating under 12W, these modules cut power usage and lower operational costs—crucial for power-sensitive edge and access nodes.
4. Future-Proof Investment
With support for PAM4 signaling and QSFP-DD MSA compliance, 400G FR4 modules ensure forward compatibility in evolving network architectures.
Application in 5G Network Architecture
In 5G networks, 400G QSFP-DD FR4 transceivers are commonly deployed in:
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DU to CU Backhaul: Transporting aggregated data from distributed units to centralized control units.
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Edge Data Center Interconnects (EDCI): Connecting micro data centers close to end users.
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Carrier Ethernet & Metro Aggregation: Replacing multiple 100G or 200G modules with a single 400G link, simplifying infrastructure.
About QSFPDD800G – Taiwan AI Optical Transceiver Manufacturer
At QSFPDD800G, we specialize in manufacturing high-performance optical modules that power the AI, cloud, and telecom sectors. As a TAA-compliant manufacturer based in Taiwan, we offer:
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Full Range of QSFP-DD/OSFP 400G & 800G Modules
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Customizable DCI and AI Network Solutions
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Strict QA and RoHS/CE/FCC Certifications
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Global Logistics & Fast Lead Times
Our 400G QSFP-DD FR4 is designed to meet the rigorous demands of AI-era infrastructure and next-gen telecom networks.
Conclusion
The integration of 400G QSFP-DD FR4 into 5G backhaul networks delivers unmatched scalability, efficiency, and future-readiness. Whether you're upgrading existing transport links or deploying greenfield C-RAN, these optical transceivers are a cornerstone technology for the modern mobile era.
🔗 Explore more at QSFPDD800G.com
Contact us for samples, volume pricing, and compatibility charts.