CQP-SI400G-DR4 400Gbps QSFP-DD Optical Transceiver with 1310nm Wavelength and 500m Transmission for Data Centers

The CQP-SI400G-DR4 is a high-performance 400G QSFP-DD DR4 optical transceiver based on silicon photonics integration technology, designed for medium-reach single-mode fiber (SMF) links in data centers and enterprise networks. It operates on 4 parallel 100G PAM4 lanes with a single 1310nm wavelength, delivering stable 500m transmission when FEC is enabled. Fully compliant with IEEE 802.3bs 400GBASE-DR4 and QSFP-DD MSA standards, it features hot-swappable design and digital optical monitoring (DOM) for easy maintenance.

• Silicon Photonics Integration: Higher integration density, lower power consumption, and superior reliability compared to traditional optoelectronic solutions
• Longer Reach for SMF: 500m transmission distance supports inter-cabinet, inter-building, and campus-scale data center connections
• Cost-Effective Interconnection: Single wavelength design reduces fiber and cable costs by up to 75% compared to multi-wavelength SMF solutions
• Broad Compatibility: Seamlessly integrates with mainstream network equipment and supports 4×100G-DR breakout for smooth legacy network migration
• Easy Maintenance: Hot-swappable design and real-time DOM monitoring enable proactive troubleshooting and minimal downtime
• Energy Efficient: Optimized power management reduces operational costs for large-scale data center deployments

• Data Center Inter-Cabinet / Inter-Building Connectivity
• Campus Backbone Networks & Enterprise Core Upgrades
• High-Performance Computing (HPC) Cluster Interconnection
• Cloud Service Provider (CSP) Medium-Reach Links
• Metro Access Networks (Short-Haul)
• Legacy 100G/200G Network Migration to 400G

Rigorous testing for optical power, extinction ratio, BER, and temperature stability with 1-year standard warranty.

Package Contents: 1× CQP-SI400G-DR4 Module, 1× Anti-Static Bag, 1× English User Manual, 1× Optical Interface Cleaning Cloth.