Optoelectronic hybrid cable QSFP specifications and models

Optoelectronic hybrid QSFP cables combine copper and optical technologies to deliver high-speed, power-efficient interconnects for data centers and HPC applications.

Overview

Optoelectronic hybrid QSFP cables integrate copper for short-range connectivity and optical components for longer reach or higher bandwidth, providing a cost-effective and energy-efficient alternative to fully active optical cables. These cables are designed to support high-density interconnects in data centers, enterprise networks, and high-performance computing environments, while maintaining compliance with industry standards such as QSFP MSA, IEEE 802.3ba/bj, and InfiniBand QDR/FDR/EDR .

Key Specifications

• Data Rates: Hybrid QSFP cables support aggregate bandwidths from 40 Gb/s to 400 Gb/s, depending on the model and configuration .
• Channel Speeds: Typical per-channel speeds include 10 Gb/s, 14 Gb/s, 25 Gb/s, and 28 Gb/s, with QSFP-DD models supporting up to 400 Gb/s via 8 or 4-lane configurations .
• Cable Lengths: Passive copper hybrid cables are generally available for short links (0.5–6 meters), while active optical hybrid cables extend reach beyond 10 meters .
• Connector Types: QSFP, QSFP+, QSFP-DD, and SFP+ interfaces are supported, with some hybrid cables providing QSFP-to-SFP+ breakout for flexible deployment .
• Signal Integrity: Hybrid designs incorporate state-of-the-art signal processing to maintain high-speed transmission and reduce power consumption compared to fully active optical solutions .
• EMI Shielding: Metal cages and diecast covers ensure effective EMI shielding and robust termination .

Models and Examples

• Mellanox LinkX Hybrid QSFP to SFP+ 10Gb/s Cables: Passive copper hybrid cables connecting QSFP ports to SFP+ ports, optimized for low power consumption and cost-effective data center interconnects .
• Cisco 400G QSFP-DD Passive Copper Cables: QSFP-DD-to-QSFP56 or QSFP-DD-to-2x QSFP56 breakout cables for 400G links, available in lengths from 0.5 to 3 meters, supporting high-bandwidth breakout applications .
• Amphenol and FCI QSFP Copper Assemblies: Passive copper QSFP cables supporting 40G, 56G, and 112G aggregate bandwidths, with lengths up to 6 meters for 10G per channel and 5 meters for 14G/28G per channel, including EMI shielding and heat dissipation features .
• TE Connectivity Active Optical Cable Assemblies: Hybrid active optical solutions providing longer reach and improved flexibility compared to passive copper, suitable for high-performance computing and data center interconnects .

Applications

• Data Centers: High-density rack-to-rack or server-to-switch interconnects.
• High-Performance Computing (HPC): Low-latency, high-bandwidth connections for compute clusters.
• Enterprise Networks: Flexible breakout and hybrid connectivity for 10G, 25G, 100G, and 400G deployments.

Summary

Optoelectronic hybrid QSFP cables offer a versatile solution for modern high-speed networks, combining the low cost and power efficiency of copper with the extended reach and high bandwidth of optical components. They are available in multiple form factors, data rates, and lengths, supporting both passive and active designs, and are compatible with QSFP, QSFP-DD, and SFP+ ports for flexible deployment in data centers and HPC environments .