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40G QSFP+ LR4
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40G QSFP+ LR4

40G QSFP+ LR4

40G QSFP+ LR4—4×10G CWDM @ ~1310 nm over LC-duplex, up to 10 km on OS2; QSFP+ (SFF-8436) with DDM—ideal for long-reach data-center and campus links.

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The 40G QSFP+ LR4 is a 40-Gigabit Ethernet single-mode transceiver for links up to 10 km. It multiplexes 4×10G NRZ CWDM wavelengths around 1310 nm onto a duplex LC interface and presents a 4×10.3125 Gbps electrical host—ideal for spine/leaf fabrics, campus DCI, and long-reach aggregation.

  • Standards & Management

    • IEEE 802.3ba 40GBASE-LR4 compliant

    • Form factor: QSFP+ (SFF-8436)

    • DOM/DDM diagnostics (temperature, voltage, TX/RX power, bias)

  • Optics & Reach

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

    • Fiber/Connector: OS2 SMF, LC duplex

    • Reach: up to 10 km

  • Performance & Power

    • Line rate: 40 GbE (4×10G NRZ)

    • Typical power: ≤ 3.5 W (platform-dependent)

    • Low BER; PRBS/loopback support (by host)

  • Reliability & Environment

    • Case temp: 0 ~ +70 °C (commercial)

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

    • RoHS/REACH compliant

  • Use Cases

    • 40G spine–leaf interconnects requiring 10 km reach

    • Campus/metro DCI over existing single-mode plant

    • Long-reach aggregation with simple LC-duplex cabling

    • (Platform-dependent) 4×10G LR breakout support

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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.