The 400G QSFP-DD LR4 Optical Transceiver delivers 400Gbps (4×100G) data rates over single-mode fiber with a 10km reach, utilizing CWDM4 technology and QSFP-DD form factor. Designed for Data Center Interconnect, enterprise networks, and 5G fronthaul or backhaul, it features low power consumption and high port density. Compliant with IEEE/MSA standards, this module ensures reliable performance for cloud computing and AI-driven infrastructure.
| Product Features |
●Compliant with IEEE 802.3bs standard:400GAUI-8 electrical interface ●Compliant with QSFP-DD MSA HW Rev 5.1 type 2 housing with duplex LC connector ●Compliant with QSFP-DD CMIS Rev 5.0 ●Operating distance at engineering link of up to 10km ●Maximum power consumption 9 W ●Case operating temperature 0℃to 70℃ ●Two wire serial Interface with digital diagnostic monitoring ●Complies with EU Directive 2011/65/EU (RoHS compliant) ●Class 1 Lase |
| Data Sheet |
| 400G-QSFP-DD-LR4-10km.pdf |
If you are interested in the 400G QSFP-DD LR4 10km, please contact us sales@c-light.com
A 400G QSFP-DD LR4 10km transceiver is a high-speed optical module that delivers 400Gbps Ethernet transmission over single-mode fiber using CWDM4 technology. It is designed for medium-reach data center and enterprise interconnects.
Key features include:
400Gbps data rate
CWDM4 optical technology
Up to 10km over SMF
Duplex LC connector
QSFP-DD form factor
It is ideal for DCI, cloud computing, AI infrastructure, and enterprise backbone networks.
The module transmits 4×100G PAM4 optical channels over a duplex single-mode fiber pair using CWDM wavelengths. It converts electrical signals into optical signals, providing high-bandwidth and low-latency connectivity for modern Ethernet networks.
The C-LIGHT module is designed for reliable long-distance 400G networking.
Key features include:
400Gbps transmission
Up to 10km over SMF
CWDM4 technology
IEEE 802.3bs compliant
QSFP-DD MSA Rev 5.1
CMIS Rev 5.0
Power consumption ≤9W
Digital Diagnostic Monitoring (DDM)
These features provide stable performance for high-density data center deployments.
Compared with shorter-reach optical modules, it offers:
Longer transmission distance
Higher bandwidth density
Low power consumption
Easy migration to 400G
High reliability
It is an efficient solution for medium-distance optical interconnects.
These modules are widely deployed in high-speed optical networks.
Typical applications include:
Data Center Interconnect (DCI)
Cloud computing
AI data centers
Enterprise backbone networks
5G fronthaul and backhaul
Metro Ethernet
These applications require high bandwidth, low latency, and reliable 10km optical transmission.
A 400G LR4 module supports up to 10km transmission, while FR4 is designed for 2km links. LR4 is better suited for campus, metro, and longer-distance data center interconnects.
Its advantages include:
Longer transmission reach
Reliable 10km connectivity
Duplex LC interface
Low power consumption
Excellent compatibility
It is ideal for medium-distance optical networks.
When selecting a 400G LR4 module, consider:
Transmission distance
Fiber type
Connector type
Switch compatibility
Power consumption
IEEE/MSA compliance
Choosing the right module ensures stable network performance and future scalability.
The C-LIGHT 400G QSFP-DD LR4 combines high bandwidth, low power consumption, and reliable 10km transmission in a compact QSFP-DD package.
It provides:
400Gbps bandwidth
Up to 10km over SMF
CWDM4 optical technology
Power consumption ≤9W
Broad platform compatibility
It is an ideal solution for AI data centers, DCI, enterprise networks, cloud computing, and next-generation Ethernet infrastructure.
For any questions, please contact us by email or WhatsApp.
Email: sales@c-light.com
WhatsApp: +86 132 6656 7067
