Quotation for QSFP-DD High-Speed ​​Optical Connectors for Data Center Interconnection

QSFP-DD Active Optical Cables (AOCs) and transceivers for DCI range from approximately $1,400 for short-reach 400G modules to over $130,000 for long-haul 800G coherent ZR+ modules, depending on reach, vendor, and module type.

Pricing Overview

• Short-Reach 400G QSFP-DD AOCs (SR8): Ideal for in-rack or cross-row connectivity, priced between $1,400 and $1,800 from reputable third-party vendors .
• Medium-Reach Modules (DR4, FR4): Suitable for inter-row or campus links, third-party pricing is competitive, typically $3,000–$6,000, depending on distance and vendor .
• Long-Reach Modules (LR4, ZR, ZR+): Designed for metro, regional, or wide-area DCI, OEM LR4 modules can exceed $10,000, while coherent ZR+ modules for distances over 1000 km may cost $130,000 or more .

Technical Specifications

• Form Factor: QSFP-DD (Quad Small Form-Factor Pluggable Double Density) supports 400G and 800G Ethernet speeds, with backward compatibility to QSFP28 for breakout applications .
• Active Optical Cables (AOCs): Contain integrated transceivers, lightweight, thin, and optimized for high-density racks. Example: 2m 400G QSFP-DD AOC supports 53Gb/s per channel over OM4 multimode fiber .
• Coherent Optics: 800G QSFP-DD ZR/ZR+ modules support amplified DWDM links up to 120 km (800ZR) or over 1000 km (800G ZR+), leveraging CMOS and coherent technology for high-performance DCI .
• Breakout Capability: 400G QSFP-DD can break out into 4x100G QSFP28 connections, enabling flexible fiber utilization and high-density deployments .
• Security & Compliance: Some modules support AES-256 encryption and are compliant with IEEE 802.3cd, OIF-CEI-04.0, QSFP-DD MSA, and QSFP-DD-CMIS-rev4p0 standards .

Deployment Considerations

• Distance & Reach: Select SR, DR, FR, LR, or ZR/ZR+ modules based on the required DCI distance. Short-reach AOCs are cost-effective for intra-data center links, while coherent ZR+ modules are necessary for metro or regional interconnects .
• Vendor Selection: Third-party vendors offer significant cost savings for DR4, FR4, and LR4 modules, while OEMs dominate the high-end ZR/ZR+ market .
• Cable Management: AOCs simplify airflow and reduce rack congestion, critical in high-density environments .

Recommendation

For a data center interconnect deployment, consider:

1. Short to medium distances (<2 km): 400G QSFP-DD SR8 or DR4 AOCs for cost efficiency.
2. Metro or regional distances (10–1000 km): 400G/800G LR4 or 800G ZR/ZR+ coherent modules for high-performance DCI.
3. Breakout flexibility: Use QSFP-DD modules for 4x100G breakout to optimize fiber utilization. For a precise quotation, vendors like FS.com, Smartoptics, Cisco, and Frame Communications provide detailed pricing and volume discount options based on module type, reach, and quantity .