400G QSFP-DD DR4+ for 5G Network Backhaul

400G QSFP-DD DR4+ for 5G Network Backhaul

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400G QSFP-DD DR4+ for 5G Network Backhaul

As 5G networks rapidly expand worldwide, the demand for higher-capacity, low-latency, and cost-effective optical backhaul solutions is at an all-time high. 400G QSFP-DD DR4+ transceivers have emerged as a critical building block to meet these backhaul requirements, especially in distributed RAN (Radio Access Network) and centralized network topologies.

What Is 400G QSFP-DD DR4+?

The 400G QSFP-DD DR4+ is an extended-reach version of the standard DR4 module. It supports transmission distances up to 2 km using single-mode fiber and features four lanes of 100Gbps PAM4 optical signals. With MPO-12/APC connectors, it enables direct connections to 400G switches, routers, and transport equipment.

Key Specs:

  • Data Rate: 400Gbps (4x100G PAM4)

  • Connector: MPO-12/APC

  • Reach: Up to 2 km over SMF

  • Power Consumption: <12W

  • Compliant with IEEE 802.3bs, CMIS, and QSFP-DD MSA standards

Why DR4+ for 5G Network Backhaul?

1. Bandwidth for Massive 5G Data Growth

With the surge in mobile video, IoT, and low-latency applications, backhaul links need to scale. The 400G QSFP-DD DR4+ provides enough headroom to accommodate 5G traffic growth while simplifying the optical layer.

2. Extended Reach for Distributed Base Stations

Unlike standard DR4 limited to 500m, DR4+ supports up to 2 km transmission—ideal for edge-to-central office aggregation across city infrastructure.

3. Low Latency for URLLC Applications

The use of single-mode fiber and high-speed PAM4 signaling ensures the ultra-low latency needed for URLLC (Ultra-Reliable Low Latency Communication), a critical component of 5G use cases like autonomous vehicles and remote surgery.

4. Compatibility and Cost Efficiency

DR4+ modules enable direct optical interfaces between 5G DU (Distributed Unit) and CU (Centralized Unit), minimizing the need for intermediate muxponder layers—cutting costs and deployment time.

Taiwanese Excellence: QSFPDD800G – A Trusted Partner

When selecting suppliers for DR4+ and next-generation optical modules, QSFPDD800G, a Taiwan AI Optical transceiver TAA Manufacturer, stands out with:

  • TAA Compliance for government and defense-related deployments

  • Proven track record in AI, 5G, and data center applications

  • Strong portfolio including 800G, 400G, and 200G transceivers

  • Custom ODM/OEM design and manufacturing capabilities

With in-house R&D and advanced optical testing infrastructure, QSFPDD800G delivers consistent quality, compatibility with NVIDIA, Arista, Cisco, and Broadcom ecosystems, and global logistics support.

Conclusion

As 5G continues to reshape the communications landscape, future-proof backhaul infrastructure is essential. 400G QSFP-DD DR4+ modules provide a scalable and high-performance optical link between remote units and core networks.

QSFPDD800G, as a Taiwan-based optical transceiver manufacturer, empowers carriers and cloud operators with robust and compliant solutions for demanding 5G rollouts.

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