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400G QSFP-DD FR4 optical transceiver is a hot-pluggable, coherent module designed for 400GbE applications over 2km single-mode fiber. Compliant with IEEE 802.3cu 400GBASE-FR4 and QSFP-DD MSA standards, it features a duplex LC interface for bidirectional data transmission.
| 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 ●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 Laser |
| Data Sheet |
| 400G-QSFP-DD-FR4-2km.pdf |
400G QSFP-DD FR4 2km Transceiver FAQ
Q1: What is a 400G QSFP-DD FR4 2km transceiver?
A 400G QSFP-DD FR4 2km transceiver is a hot-pluggable optical module designed for 400GbE transmission over single-mode fiber. Using CWDM4 technology, it delivers 400Gbps connectivity up to 2km, making it ideal for modern data center networks.
Key features include:
400Gbps data rate
CWDM4 optical technology
Up to 2km over SMF
Duplex LC connector
QSFP-DD form factor
It is ideal for AI data centers, cloud computing, enterprise networks, and DCI.
Q2: How does a 400G QSFP-DD FR4 transceiver work?
The module converts 8×50G electrical lanes into 4×100G PAM4 optical channels using CWDM wavelengths over duplex single-mode fiber. This provides high-bandwidth, low-latency transmission while reducing fiber requirements.
Q3: What are the key features of the C-LIGHT 400G QSFP-DD FR4 2km transceiver?
The C-LIGHT module is designed for reliable medium-reach 400G networking.
Key features include:
400Gbps transmission
Up to 2km over SMF
IEEE 802.3cu compliant
QSFP-DD MSA Rev 5.1
CMIS Rev 5.0 support
Duplex LC connector
Power consumption ≤9W
Digital Diagnostic Monitoring (DDM)
These features provide stable, high-density optical connectivity for modern data centers.
Q4: What are the advantages of a 400G QSFP-DD FR4 transceiver?
Compared with shorter-reach multimode modules, it offers:
Longer transmission distance
Duplex LC connectivity
Low power consumption
High bandwidth density
Easy 400G deployment
It is a cost-effective solution for medium-distance single-mode interconnects.
Q5: Where are 400G QSFP-DD FR4 transceivers commonly used?
These modules are widely deployed in high-speed optical networks.
Typical applications include:
AI data centers
Cloud computing
Data Center Interconnect (DCI)
Enterprise backbone networks
Spine-Leaf architectures
Campus data centers
These applications require reliable 400Gbps transmission over distances up to 2km.
Q6: Why choose a 400G QSFP-DD FR4 instead of a 400G DR4 module?
A 400G FR4 module uses duplex LC connectors and CWDM technology for 2km transmission, while DR4 typically uses MPO connectors and supports 500m links.
Its advantages include:
Longer transmission reach
Duplex LC interface
Lower fiber complexity
Easy deployment
Broad compatibility
It is ideal for campus and cross-building data center connections.
Q7: How do you choose the right 400G QSFP-DD FR4 transceiver?
When selecting a 400G FR4 module, consider:
Transmission distance
Fiber type
Connector type
Switch compatibility
Power consumption
IEEE/MSA compliance
Choosing the right module ensures reliable performance and future network scalability.
Q8: Why choose the C-LIGHT 400G QSFP-DD FR4 2km transceiver?
The C-LIGHT 400G QSFP-DD FR4 combines high bandwidth, low power consumption, and reliable 2km transmission in a compact QSFP-DD package.
It provides:
400Gbps bandwidth
Up to 2km over SMF
CWDM4 optical technology
Power consumption ≤9W
Broad platform compatibility
It is an ideal solution for AI data centers, cloud computing, DCI, enterprise networks, and next-generation Ethernet infrastructure.
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