Active Optical Cable Product Introduction

Active Optical Cables (AOCs) are high-speed communication cables that convert electrical signals to optical signals for long-distance, low-latency data transmission, combining the simplicity of copper cables with the performance of fiber optics.Overview

Active Optical Cables (AOCs) are advanced cabling assemblies that integrate fiber optic technology with active electronic components to enable high-speed data transmission over distances that traditional copper cables cannot achieve . Unlike passive cables, AOCs use optical transceivers at both ends to convert electrical signals into optical signals for transmission and then back into electrical signals at the receiving end . This allows for longer reach, higher bandwidth, and lower power consumption compared to copper solutions .

Structure and Components

An AOC typically consists of:

• Optical transceivers permanently attached to each end of the fiber cable, often sealed in ruggedized connectors compatible with industry-standard form factors such as SFP+, QSFP+, QSFP28, QSFP-DD, and OSFP .
• Fiber optic cable, usually multi-mode for data center applications, providing minimal attenuation and immunity to electromagnetic interference (EMI) and radio frequency interference (RFI), .
• Laser diodes or VCSELs at the transmit end to convert electrical signals into optical signals.
• Photodiodes at the receive end to convert optical signals back into electrical signals . The fiber and connectors are bonded into a single assembly, making the cable plug-and-play like a copper DAC cable but with the advantages of optical transmission .

Performance and Advantages

• High data rates: AOCs support speeds from 10 Gbps up to 800 Gbps, with newer generations reaching multi-terabit capacities .
• Long transmission distances: Unlike copper cables limited to 5–7 meters, AOCs can reliably transmit over 100 meters, with some configurations reaching 300 meters .
• Low latency and precise timing: In HPC and supercomputing, AOCs are manufactured with fibers cut to exact lengths to minimize signal skew between channels .
• Lightweight and flexible: Easier to install and manage than bulky copper cables .
• Low power consumption: Active components reduce the need for high electrical drive power over long distances .
• EMI/RFI immunity: Optical transmission ensures signal integrity in electrically noisy environments .
• Compatibility: Works with standard electrical interfaces while providing optical performance .

Applications

AOCs are widely used in:

• Data centers: High-density interconnects for servers, switches, and storage systems .
• High-performance computing (HPC): Supercomputers and clusters requiring precise timing and low-latency communication .
• Enterprise and hyperscale networks: Plug-and-play solutions for long-reach connections .
• Audio/Video systems: Transmission of high-resolution video signals (up to 8K60 Hz) over long distances without bulky copper cabling .

Summary

Active Optical Cables combine the ease of use of copper cables with the high performance of fiber optics, offering a scalable, low-latency, and energy-efficient solution for modern high-speed communication needs. Their ability to support long distances, high bandwidth, and EMI-free transmission makes them ideal for data centers, HPC, enterprise networks, and AV applications .