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400G QSFP56-DD FR4
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400G QSFP56-DD FR4

400G QSFP56-DD FR4

400G QSFP56-DD FR4—4×100G PAM4 CWDM4 @ ~1310 nm over LC-duplex, up to 2 km on OS2; 400GAUI-8 host, CMIS management, KP4 FEC—ideal for long-reach data-center and metro access links.

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The 400G QSFP56-DD FR4 is a 400-Gigabit Ethernet single-mode transceiver for links up to 2 km. It transmits 4×100G PAM4 over CWDM4 wavelengths around 1310 nm on a duplex LC interface and presents an 8-lane 400GAUI-8 electrical host—ideal for spine/leaf fabrics, campus DCI, and metro access where longer reach and simple LC cabling are preferred.

  • Standards & Management

    • Optical: 400GBASE-FR4 (per 100G Lambda MSA / IEEE 802.3cu)

    • Electrical host: 400GAUI-8 (8×53.125 Gbps PAM4, host KP4 FEC)

    • Module management: CMIS 4.0+ (DOM/diagnostics, alarms)

  • Optics & Reach

    • Wavelengths (typ.): 1295.56 / 1300.05 / 1304.58 / 1309.14 nm

    • Fiber/Connector: OS2 SMF, LC duplex

    • Reach: up to 2 km

  • Performance & Power

    • Line rate: 400 GbE (4×100G PAM4 optics)

    • Typical module power: ≤ 10 W (platform-dependent)

    • Low BER with host KP4 FEC; PRBS/loopback support

  • Reliability & Environment

    • Case temperature: 0 to +70 °C (commercial); extended range on request

    • Laser safety: Class 1 (IEC 60825-1)

    • RoHS/REACH compliant

  • Use Cases

    • 400G spine–leaf interconnects needing 2 km reach

    • Campus/metro DCI on duplex SMF

    • Aggregation uplinks with simplified LC-duplex cabling

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Expert Integration & Customization

Our senior optical engineers leverage a mature portfolio of DCI/OTN platforms and CWDM/DWDM modules to deliver precise customization and form/fit/function matching. From compact DCI BOX to coherent 100G/200G/400G line cards, we meet multi-vendor interoperability targets (e.g., OpenZR+/OpenROADM) and tailor interfaces, protection, and O&M to your requirements.

Industry-Leading Speed

Accelerate your rollout with rapid cycles: lab configurations in 1–3 days, standard builds shipping in 3–7 days, and pilot-friendly MOQs (1 unit for in-stock models; ≥5 units for custom). Move fast, validate quickly, and scale without risk.

Certified Quality & System Assurance

Quality is built into every stage. We operate under ISO 9001 and provide product-level safety/EMC compliance (CE, FCC, UL, TUV, CSA) plus RoHS/REACH. Advanced ERP/MES ensures full serial-level traceability and batch-to-batch consistency—your assurance of reliable optical transport at scale.