SFP Active Optical Cables (AOCs) provide high-speed, low-latency, and flexible optical connectivity for data centers and telecom applications, outperforming traditional copper cables in reach, weight, and signal integrity.

Overview

Active Optical Cables (AOCs) are plug-and-play fiber assemblies that integrate optical transceivers directly into the cable ends, eliminating the need for separate SFP transceivers. They are designed for short- to medium-range high-speed links between switches, servers, and storage systems, offering secure, low-latency connections in high-density environments (Pivotal Optics) .

Key Features

• High Data Rates: SFP+ AOCs support 10 Gbps to 56 Gbps aggregate bandwidth, with some solutions reaching up to 100 Gbps or higher for QSFP-DD interfaces (Liverage, TE Connectivity) .
• Extended Reach: Cable lengths can extend up to 100 meters, significantly longer than copper direct attach cables (DACs) .
• Low Power Consumption: Typical power usage is around 1.5 W per cable, making them energy-efficient for dense deployments .
• Hot-Pluggable: SFP+ ends are mechanically compatible with SFF-8432 and support hot-swapping for easy maintenance .
• Lightweight and Flexible: AOCs are lighter and more flexible than copper DACs, simplifying cable management in high-density racks .
• Standards Compliance: Compliant with SFF-8431, SFF-8432, SFF-8472, and RoHS directives, ensuring interoperability and environmental compliance .

Applications

• Data Centers: Inter-rack and intra-rack connections for high-speed Ethernet, InfiniBand, and Fiber Channel networks .
• Telecom and Wireless: 10GBASE-SR Ethernet links, CPRI, and other telecom backhaul connections .
• High-Performance Computing (HPC): Low-latency interconnects for compute clusters and storage arrays .
• Client-Side 10G Connections: Short-range optical links for enterprise and telecom clients .

Advantages Over Copper Cables

• Longer Reach: Optical transmission allows distances up to 100 meters, compared to 10–15 meters for copper DACs.
• Better Signal Integrity: Reduced electromagnetic interference and higher bandwidth stability.
• Energy Efficiency: Lower power consumption per link.
• Simplified Cabling: Lighter, thinner cables reduce congestion in high-density racks.

Vendor Options

• Liverage: Offers 4-channel bi-directional SFP+ AOCs with 56 Gbps aggregate bandwidth and 100 m reach .
• Pivotal Optics: Provides validated AOCs compatible with Cisco, Juniper, Arista, Dell, Intel, Mellanox, and Broadcom .
• Coherent: Features next-generation VCSEL-based SFP+ AOCs with flexible, high-density installation support .
• Amphenol: 10G SFP+ AOCs for telecom, wireless, InfiniBand, and Fiber Channel applications .
• TE Connectivity: Comprehensive portfolio for 4G to 112G+ applications, including QSFP and QSFP-DD interconnects . Active Optical Cables for SFP/SFP+ interfaces are therefore a high-performance, energy-efficient, and flexible solution for modern networking and data center environments, providing superior reach, bandwidth, and manageability compared to traditional copper solutions.