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800G QSFP-DD is a high-speed optical transceiver that utilizes the "Quad Small Form-factor Pluggable Double Density" package. Its core design increases the number of high-speed channels from four to eight by adding a second row of electrical contacts on top of the standard QSFP package, thereby achieving a total bandwidth of 800 Gbps.It is primarily used for high-speed interconnects within data centers, in 800G Ethernet, and in AI computing clusters to meet demands for high bandwidth and low latency. A key feature of this package is its physical compatibility with previous-generation QSFP modules, along with support for various modulation schemes and improved thermal design.
| Form Factor | Part No. | Fiber Type | Data Rate | Wavelength | Distance | Connector | Temp. | Note |
|---|---|---|---|---|---|---|---|---|
| QSFP-DD | CL800GQDDZR+ | SMF | 800ZR 118GB 16QAM | 1x800G/ 2x400G/ 4x200G/ 8x100G on Host | 120km | LC | Com. | |
| 800ZR+ 124GB PCS-16QAM | 1x800G/ 2x400G/ 4x200G/ 8x100G on Host | 500km | LC | Com. | ||||
| 800ZR+ 118GB 16QAM | 1x800G/ 2x400G/ 4x200G/ 8x100G on Host | 340km | LC | Com. | ||||
400ZR++ 118GB QPSK(56G Serdes) | 1x400G/ 2x200G/ 4x100G on Host | 2400km | LC | Com. | ||||
400ZR++ 118GB QPSK(112G Serdes) | 1x400G/ 2x200G/ 4x100G on Host | 2400km | LC | Com. | ||||
| QSFP-DD | CL800GQDDZR | SMF | 800ZR 118GB 16QAM | 1x800G/ 2x400G/ 4x200G/ 8x100G on Host | 120km | LC | Com. | |
| QSFP-DD | CL800GQDD2FR4-CS | SMF | 2x400G | LAN WDM | 2km | CS | Com. | Data-Sheet |
| QSFP-DD | CL800GQDD2LR4 | SMF | 2x400G | LAN WDM | 10km | LC | Com. | Data-Sheet |
| QSFP-DD | CL800GQDD2FR4 | SMF | 2x400G | LAN WDM | 2km | LC | Com. | Data-Sheet |
| QSFP-DD | CL800GQDD2DR4 | SMF | 2x400G | LAN WDM | 500m | 2x MPO | Com. | Data-Sheet |
| QSFP-DD | CL800GQDD2SR4-12 | MMF | 2x400G | 850nm | 100m | 2x MPO-12 | Com. | Data-Sheet |
| QSFP-DD | CL800GQDD2SR4-16 | MMF | 2x400G | 850nm | 100m | 2x MPO-16 | Com. | Data-Sheet |
The C-LIGHT 800G QSFP-DD optical transceiver is a high-speed optical module designed for next-generation AI data centers, hyperscale cloud infrastructure, and high-performance Ethernet networks. Supporting up to 800Gbps aggregate bandwidth, this optical transceiver enables high-density, low-latency optical interconnects between switches, servers, and advanced computing systems.
Based on the QSFP-DD (Quad Small Form Factor Pluggable Double Density) architecture, the 800G QSFP-DD optical module provides increased port density and backward compatibility with existing QSFP form factors. It is optimized for large-scale data center deployment, supporting the continuous evolution from 400G to 800G Ethernet networks.
The module adopts 8-channel 100Gb/s PAM4 signaling technology with integrated DSP and Forward Error Correction (FEC), delivering excellent signal integrity, improved transmission reliability, and enhanced performance for demanding AI workloads, machine learning clusters, and cloud computing applications.
Supports 800Gbps aggregate bandwidth to meet the increasing connectivity requirements of AI and cloud data centers.
Provides high port density and efficient rack-scale deployment for next-generation Ethernet switches.
Uses advanced 8-channel 100Gb/s PAM4 modulation technology for high-speed optical transmission.
Advanced DSP and FEC improve signal quality and ensure reliable transmission performance.
Designed for AI clusters, GPU networks, HPC systems and hyperscale cloud infrastructure.
Provides a scalable upgrade solution for customers moving from 400G Ethernet toward 800G networking.
The rapid growth of artificial intelligence, machine learning, and large-scale cloud computing is driving demand for higher bandwidth and more efficient optical connectivity. The C-LIGHT 800G QSFP-DD optical transceiver provides a reliable solution by combining advanced PAM4 technology, DSP-based signal processing, and high-density QSFP-DD packaging.
Designed for modern data center environments, the 800G QSFP-DD optical module enables seamless network upgrades from 400G to 800G Ethernet while supporting future AI infrastructure requirements including large-scale GPU clusters and hyperscale computing platforms.
An 800G QSFP-DD optical transceiver is a high-speed optical module designed to provide 800Gbps data transmission for next-generation data center networks, AI infrastructure, and high-performance computing systems. Based on the QSFP-DD form factor, it provides high-density optical connectivity for Ethernet switches, servers, and large-scale cloud networks.
The 800G QSFP-DD optical transceiver is mainly used in AI data centers, hyperscale cloud infrastructure, GPU cluster networks, high-performance computing (HPC), and next-generation Ethernet applications. It enables high-bandwidth and low-latency connections required by modern computing workloads.
The C-LIGHT 800G QSFP-DD optical transceiver adopts 8-channel 100Gb/s PAM4 modulation technology with integrated DSP and Forward Error Correction (FEC). This advanced architecture improves signal integrity, transmission reliability, and overall optical performance for high-speed data center networks.
QSFP-DD provides higher port density and increased bandwidth capacity compared with traditional QSFP form factors. The design enables data centers to deploy 800G Ethernet networks while maintaining efficient rack space utilization and supporting high-density switch platforms.
A 400G optical transceiver supports 400Gbps bandwidth, while an 800G QSFP-DD optical transceiver doubles the capacity to 800Gbps. The 800G solution helps data centers handle increasing bandwidth demands from AI workloads, GPU clusters, and large-scale cloud applications.
Yes. The 800G QSFP-DD optical transceiver is designed for AI data center networks, including GPU clusters, AI training platforms, and high-performance Ethernet architectures. It provides the bandwidth, scalability, and low-latency connectivity required for next-generation AI computing environments.
The transmission distance depends on the optical interface type and network requirements. C-LIGHT provides different 800G QSFP-DD optical transceiver solutions supporting various data center interconnect applications, including short-reach and longer-distance optical transmission scenarios.
C-LIGHT 800G QSFP-DD optical transceivers combine advanced PAM4 technology, DSP signal processing, FEC capability, and high-density QSFP-DD packaging to deliver reliable 800Gbps optical connectivity. They provide a scalable solution for customers upgrading from 400G Ethernet toward next-generation AI and cloud data center networks.
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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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