TS-QDO8-318H-01C/800G QSFP-DD DR8 MPO Transceiver Module, 1310nm SMF 500m For

The 800G QSFP-DD DR8 optical transceiver is a pivotal component for modern hyperscale data centers, delivering an aggregate data rate of 800Gbps to meet the bandwidth demands of AI and cloud computing. Operating at a 1310nm wavelength, this module utilizes 8x100G PAM4 modulation to transmit data over single-mode fiber (SMF) for distances up to 500 meters. Engineered for high-density environments, it bridges the gap between short-reach multi-mode solutions and long-haul single-mode optics, offering a cost-optimized path for spine-to-leaf interconnects.

Figure 1 shows the front panel of 800G QSFP-DD DR8 MPO.

The 800G QSFP-DD DR8 (Double Density) is a hot-pluggable, parallel fiber-optic module designed for high-throughput Ethernet links.

• Modulation: It leverages PAM4 (Pulse Amplitude Modulation 4-level) at 106.25Gbps per lane to achieve its 800Gbps throughput.

• Optical Engine: The module features a 1310nm laser array—often utilizing EML (Electro-absorption Modulated Laser) or Silicon Photonics—and a PIN photodiode array.

• Form Factor: The QSFP-DD interface utilizes an 8-lane electrical interface, maintaining backward compatibility with legacy QSFP systems while doubling the port density.

• Connector: It typically employs an MPO-12 or MPO-16 APC connector, ensuring low back-reflection for high-fidelity signal transmission over parallel single-mode fiber.

Modern data center managers face the "distance vs. cost" bottleneck. While SR8 (850nm) modules are limited to 100m on multi-mode fiber, the 800G DR8 provides the necessary reach for larger facilities.

Core Strategic Advantages:

• Extended Reach (500m): Specifically designed for G.652 single-mode fiber, allowing for cross-row and cross-hall connectivity that SR8 cannot reach.

• Power & Thermal Efficiency: Built on a 7nm DSP architecture, the module optimizes power consumption (typically <16W), which is critical for maintaining stable PUE (Power Usage Effectiveness) in AI clusters.

• Future-Proof Breakout Capability: The DR8 is uniquely suited for breakout configurations, allowing one 800G port to connect to two 400G DR4 or eight 100G DR1 modules.

• Single-Mode Stability: Unlike VCSEL-based multi-mode modules, 1310nm single-mode optics offer superior signal stability and lower dispersion over distance.

In an industrial AI networking scenario, the 800G QSFP-DD DR8 is deployed at the Spine layer of the fabric.

• Installation: When connecting 800G switches, engineers must use APC (Angled Physical Contact) MPO cables to avoid the signal degradation caused by high-reflectance PAM4 signals.

• Compatibility: Our modules are rigorously tested on Arista, Cisco, and NVIDIA/Mellanox platforms to ensure 100% EEPROM/I2C compliance and seamless integration with CMIS 5.0 monitoring tools.

• Breakout Scenarios: By using a single-mode MPO-to-LC breakout cable, the 800G DR8 serves as a high-density "hub," simplifying cable management in the meet-me room.

Q1: What is the maximum transmission distance of the 800G DR8? A: The 800G DR8 supports a maximum link length of 500 meters on standard G.652 single-mode fiber (SMF), making it ideal for campus-scale data center interconnects.

Q2: Is the 800G DR8 compatible with MPO-12 or MPO-16? A: It depends on the specific hardware version. Standard DR8 modules often use an MPO-12/APC interface for 8-channel transmission, but some high-density versions may require MPO-16.

Q3: Can I connect an 800G DR8 to an 800G SR8? A: No. These modules are incompatible because they use different wavelengths (1310nm vs. 850nm) and different fiber types (Single-mode vs. Multi-mode).

Q4: Does this module support Digital Diagnostic Monitoring (DDM)? A: Yes, it fully supports DDM/DOM via the CMIS interface, allowing real-time monitoring of temperature, voltage, and Tx/Rx optical power.

Q5: What are the benefits of Silicon Photonics in 800G DR8? A: Silicon Photonics versions often provide a lower cost-per-bit and improved thermal reliability compared to traditional EML lasers, particularly in high-density 800G switch environments.

Q6: What warranty is provided for the 800G DR8? A: We provide a 3-year limited warranty and lifetime technical support, including compatibility verification and firmware updates for various switch vendors.

The 800G QSFP-DD DR8 is the definitive solution for high-bandwidth, mid-reach single-mode connectivity in the AI era. By combining 1310nm stability with the density of the QSFP-DD form factor, it ensures your network is ready for the next decade of data growth.