40GB QSFP+ Transceiver LR4 1271~1331nm 10KM

This 40G QSFP+ LR4 transceiver supports up to 10 km over single-mode fiber using 4-channel CWDM technology with LC duplex interface and DDM monitoring for high-speed data center and telecom networks.

SKU QSFP+-40G-LR4 Category
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The 40G QSFP+ LR4 Optical Transceiver is a high-performance module designed for 40 Gigabit Ethernet data transmission over single-mode fiber up to 10 km. It integrates a 4-channel CWDM LAN-WDM design, enabling efficient wavelength multiplexing across 1271 nm to 1331 nm for stable long-distance high-speed connectivity.

Compliant with QSFP+ MSA and IEEE 802.3ba standards, this transceiver delivers reliable full-duplex transmission with up to 10.3 Gbps per channel (maximum 11.2 Gbps per wavelength). It features a hot-pluggable QSFP+ form factor and LC duplex interface, making it ideal for data center, enterprise backbone, and telecom aggregation networks. Integrated Digital Diagnostic Monitoring (DDM) provides real-time monitoring of optical performance parameters for improved network maintenance and stability.

Data Rate40 Gbps (4 × 10.3 Gbps channels)
Max Per WavelengthUp to 11.2 Gbps
Wavelength1271 nm / 1291 nm / 1311 nm / 1331 nm
Transmission DistanceUp to 10 km (SMF)
Fiber TypeSingle-mode fiber (SMF)
Optical InterfaceLC Duplex
Technology4-channel CWDM (LR4)
Form FactorQSFP+ hot-pluggable
StandardQSFP+ MSA / IEEE 802.3ba
MonitoringDigital Diagnostic Monitoring (DDM)
ApplicationData center / Telecom / Enterprise networks
Power ConsumptionLow power design
  • 40G QSFP+ LR4 optical transceiver module
  • 4-channel CWDM/LAN-WDM design (1271–1331 nm)
  • Supports up to 10 km transmission over single-mode fiber (SMF)
  • Up to 10.3 Gbps per channel (11.2 Gbps per wavelength max)
  • LC duplex optical interface
  • Hot-pluggable QSFP+ form factor
  • Compliant with QSFP+ MSA and IEEE 802.3ba standards
  • Integrated Digital Diagnostic Monitoring (DDM)
  • Low power consumption and stable long-distance performance
  • High reliability for enterprise and carrier-grade networks
  • Data center 40G Ethernet interconnects
  • Enterprise core and aggregation networks
  • Telecom backbone transmission systems
  • Cloud computing infrastructure
  • High-speed switch-to-switch connections
  • Metro and access network links

OEM customization is available for system integrators and enterprise deployments. Options include compatible switch brands, firmware coding, labeling, packaging, and compatibility programming (e.g., Cisco, Huawei, Juniper, HP). Custom testing, wavelength tuning, and branding services are also available for bulk orders.

Q1: What is the maximum transmission distance of this module?
It supports up to 10 km over single-mode fiber (SMF).

Q2: What type of fiber connector does it use?
It uses a duplex LC optical interface.

Q3: What is LR4 in 40G QSFP+ modules?
LR4 refers to long-reach 40G transmission using four CWDM wavelengths over single-mode fiber.

Q4: Does it support monitoring functions?
Yes. It includes Digital Diagnostic Monitoring (DDM) for real-time status tracking.

Q5: Is it compatible with standard QSFP+ ports?
Yes. It follows QSFP+ MSA standards for broad compatibility.

Q6: Where is it commonly used?
It is widely used in data centers, telecom networks, and enterprise backbone systems.