400G QSFP-DD DR4 Optical Transceiver – 500m MPO SMF

SVNK QSFP-DD 400GBASE-DR4 Optical Transceiver (500 m, SMF)

The SVNK QSFP-DD 400GBASE-DR4 optical transceiver is a high-performance, hot-pluggable module engineered for 400 Gigabit Ethernet (400GbE) short-reach interconnects over single-mode fiber (SMF). Designed for next-generation data centers, cloud infrastructure, and AI-driven networks, this module supports transmission distances of up to 500 meters using a parallel-single-mode DR4 architecture.

Compliant with the QSFP-DD MSA, CMIS, IEEE 802.3bs 400GBASE-DR4, and 400GAUI-8 standards, the transceiver carries 400G Ethernet traffic over four parallel optical lanes, each operating at 106.25 Gb/s (53.125 GBd PAM4). On the electrical side, it supports an 8 × 53.125 Gb/s PAM4 (400GAUI-8) interface with integrated retiming for excellent signal integrity.

The module integrates high-performance 1310 nm optical transmitters and high-sensitivity receivers, enabling reliable short-reach SMF connectivity with low bit-error rates and strong dispersion tolerance. The high-density MPO-12 optical interface supports compact parallel fiber cabling and enables 4×100G DR breakout to QSFP28 DR transceivers.

Housed in a compact QSFP-DD form factor, the transceiver supports hot-plug operation, low power consumption, and high port density, making it ideal for large-scale data center switching platforms. Built-in Digital Optical Monitoring (DOM) via the I²C interface allows real-time diagnostics and proactive network management.

Key Features

• Hot-pluggable QSFP-DD form factor
• Supports 400Gb/s aggregate data rate
• Maximum reach up to 500 m over G.652 SMF
• 4 × 106.25 Gb/s PAM4 optical lanes (DR4 architecture)
• 8 × 53.125 Gb/s PAM4 electrical interface (400GAUI-8)
• Supports 4×100G DR breakout
• MPO-12/MTP-12 optical receptacle
• Power consumption < 10 W
• Single 3.3 V power supply
• Operating case temperature: 0°C to +70°C
• Fully compliant with QSFP-DD MSA, CMIS, IEEE 802.3bs 400GBASE-DR4
• Built-in Digital Diagnostic Monitoring (DOM/DDM)
• RoHS compliant (lead-free)