TEL：+86 132 6656 7067 
TEL：+86 132 6656 7067
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400G QSFP-DD including 400G QSFP-DD ZR-1000km,400G QSFP-DD ZR-500km,400G QSFP-DD ZR-120km,400G QSFP-DD ER8,400G QSFP-DD LR8,400G QSFP-DD LR4,400G QSFP-DD LR4-20km,400G QSFP-DD FR4,400G QSFP-DD DR4,400G QSFP-DD DR4+,400G QSFP-DD SR8 optical transceiver.
400G QSFP-DD is a high-speed optical transceiver package featuring a "Double Density" design. It achieves a total transmission bandwidth of 400 Gbps through 8 electrical channels, typically employing 50G PAM4 modulation per channel.
400G QSFP-DD is primarily used for high-speed interconnections within data centers, such as between switches and servers. While maintaining physical compatibility with mainstream QSFP28 ports and offering higher port density, this package generally has higher power consumption and more demanding thermal requirements compared to the 400G QSFP112 solution you previously inquired about, which utilizes four 112 Gbps channels.
| Form Factor | Part No. | Fiber Typ | Data Rate | Wavelength | Distance | Connector | Temperature | Download |
|---|---|---|---|---|---|---|---|---|
| QSFP-DD | CL400GQDDZR+ HP | SMF | 400G DCO | C-BAND ZR+ | 450km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDZR+HP-E | SMF | 400G DCO | C-BAND ZR+ | 450km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDZR+-300 | SMF | 400G DCO | C-BAND ZR+ | 300km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDZR+-120 | SMF | 400G DCO | C-BAND ZR+ | 120km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDZR-120 | SMF | 400G DCO | C-BAND ZR | 120km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDER4 | SMF | 400G | LAN WDM | 40km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDLR4 | SMF | 400G | CWDM | 10km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDLR4-20 | SMF | 400G | CWDM | 20km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDFR4 | SMF | 400G | CWDM | 2km | LC | Com. | Data Sheet |
| QSFP-DD | CL400GQDDDR4 | SMF | 400G | 1310nm | 500m | MPO | Com. | Data Sheet |
| QSFP-DD | CL400GQDDDR4+ | SMF | 400G | 1310nm | 2km | MPO | Com. | Data Sheet |
| QSFP-DD | CL400GQDDXDR4+ | SMF | 400G | 1310nm | 10km | MPO | Com. | Data Sheet |
| QSFP-DD | CL400GQDDSR4 | MMF | 400G | 850nm | 100m | MPO-12 | Com. | Data Sheet |
| QSFP-DD | CL400GQDDSR4-IB | MMF | 400G | 850nm | 100m | MPO-12 | Com. | Data Sheet |
| QSFP-DD | CL400GQDDSR8 | MMF | 400G | 850nm | 100m | MPO-12 | Com. | Data Sheet |
| QSFP-DD | CLQSFP400GLP | Loopback | 400G | - | 0 | - | Com. | Data Sheet |
| CFP2 | CL400GCFP2DCO | SMF | 400G | C-BAND | 1000km | LC | Com. | Data Sheet |
The C-LIGHT 400G QSFP-DD optical transceiver is a high-performance optical module designed for next-generation data centers, artificial intelligence (AI) infrastructure, cloud computing networks, and high-speed Ethernet applications. Supporting up to 400Gbps data transmission, this optical transceiver provides high bandwidth, low latency, and reliable optical connectivity for modern networking environments.
Based on QSFP-DD Double Density technology, the 400G QSFP-DD optical transceiver delivers higher port density and improved network scalability. It supports multiple optical solutions including SR8, DR4, FR4, LR4, LR8, ER8, ZR, and ZR+ to meet different transmission distance requirements from data center interconnects to long-distance optical networks.
Supports 400G Ethernet connectivity with high bandwidth capacity for AI computing, cloud platforms, and hyperscale data center networks.
Provides higher interface density and efficient network expansion while maintaining compatibility with existing data center infrastructure.
Available with multiple reach options including short-distance data center applications and extended optical transmission solutions.
Designed with advanced optical components and verified through strict performance testing to ensure stable operation.
Provides high-density optical connectivity for AI clusters, GPU computing systems, and high-performance computing platforms.
Supports scalable optical networking requirements for hyperscale cloud data centers and enterprise networks.
Suitable for backbone networks, OTN transmission systems, and next-generation communication infrastructure.
Enables reliable high-speed connections between distributed data centers over different transmission distances.
C-LIGHT 400G QSFP-DD optical transceivers utilize advanced optical technologies including PAM4 modulation, high-performance optical components, and optimized circuit design to achieve reliable high-speed data transmission.
Each optical transceiver undergoes comprehensive testing including optical performance verification, signal integrity analysis, BER testing, environmental reliability testing, and interoperability validation.
C-LIGHT provides a complete range of 400G optical solutions including QSFP-DD SR8, DR4, FR4, LR4, LR8, ER8, ZR, and customized solutions for different networking requirements.
With extensive experience in optical communication technologies, C-LIGHT delivers reliable, scalable, and cost-effective optical connectivity solutions for global customers.
A 400G QSFP-DD optical transceiver is a high-speed optical module designed for 400 Gigabit Ethernet networks. It adopts QSFP-DD Double Density technology to provide higher bandwidth capacity, increased port density, and efficient connectivity for data centers, AI networks, and cloud computing infrastructure.
400G QSFP-DD optical transceivers are widely used in AI data centers, hyperscale cloud networks, high-performance computing (HPC), telecom backbone networks, and data center interconnect (DCI) applications.
C-LIGHT provides multiple 400G QSFP-DD solutions supporting different transmission distances, including short-reach data center connections and extended-reach optical transmission applications based on different optical technologies.
C-LIGHT 400G QSFP-DD optical transceivers are designed according to industry standards including IEEE 802.3, QSFP-DD MSA, CMIS, and OIF-related specifications to ensure compatibility with modern networking systems.
C-LIGHT performs strict quality testing including optical power testing, receiver sensitivity testing, BER performance testing, temperature reliability testing, and system compatibility verification to guarantee stable network operation.
The C-LIGHT 400G QSFP-DD optical transceiver provides a reliable and scalable optical connectivity solution for next-generation data centers, AI computing networks, cloud infrastructure, and telecom applications. With high bandwidth capacity, flexible transmission options, advanced optical technology, and strict quality control, C-LIGHT helps customers build efficient and future-ready optical networks.
Contact Us●100% of products pass initial test, final test and factory inspection.
●3-step quality control management process.
●100% complete implementation of customer order quality requirements.
●100% guarantee of customer product data information security.
Please contact us to download the certification certificate.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
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