AOC, DAC, ACC, AEC Modules: The most Complete Overview_dac acc aec odsp lpo

转载自：AOC, DAC, ACC, AEC Modules: The Most Complete Overview - Asterfusion Data Technologies

There are various connection solutions available for switching networks, such as optical modules + optical fibers, Active Optical Cables (AOC), and Direct Attach Cables (DAC). DAC can be further categorized into active ACC, AEC, and passive DAC. So, what exactly are these solutions and how do they differ? Today, we will explore their features and benefits.

Understand of Active Optical Cable (AOC)

What is Active Optical Cable (AOC)?

Let’s start with AOC, which stands for Active Optical Cable. AOC consists of two modules on either end, connected by a section of optical fiber in the middle. The optical module and optical cable are integrated, and laser components are required for both ends’ optical modules.

AOC is designed to eliminate the possibility of optical port contamination and enhance reliability. It is an optimized solution that balances cost and performance by reducing the number of optical components and removing the DDM (Digital Diagnostic Monitoring) function.

AOC Advantages and Application Scenario

When compared to other cables, AOC offers numerous advantages. It provides high transmission rates, long-distance capabilities, low power consumption, lightweight, and ease of use. These benefits are made possible by the adoption of optical transmission, which overcomes limitations present in passive fiber optic cables or other cable types.

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  25G SFP28 Active Optical Cable (SFP28 to SFP28, OM3/OM4)

  from $47.00

  Select options

• 

  40G Active Optical Cable (QSFP+ to QSFP+, OM3)

  from $76.00

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• 

  10G SFP+ Active Optical Cable (SFP+ to SFP+, OM3)

  from $24.00

  Select options

Due to its lightweight and compact design, AOC is becoming increasingly popular in data centers and high-performance computing (HPC) applications. Traditional copper-based technologies are being phased out as they tend to be heavy, bulky, and inefficient. In data centers where space is limited, AOC meets the requirements for high-density connectivity. Moreover, copper cables are prone to electromagnetic interference (EMI), which hampers data transmission speed and increases packet loss. Therefore, AOC active optical cables are the ideal choice for IDC data centers, HPC environments, and InfiniBand switch interconnections.

AOC Classification

• 10G SFP+ AOC
• 25G SFP28 AOC
• 40G QSFP+ AOC
• 40G QSFP+ to 4xSFP+ AOC
• 100G QSFP28 AOC
• 100G QSFP28 to 4xSFP28 AOC
• 100G QSFP28 to 2x50G QSFP28 AOC
• 200G QSFP56 AOC
• 200G QSFP28-DD to 2xQSFP28 AOC
• 400G QSFP-DD AOC
• 400G QSFP-DD to 4xQSFP56 AOC

I believe you have already uncovered it. There exists a scenario where 40G can be divided into 4×10G, 100G can be divided into 4×25G or 2x 50G QSFP28 AOC; 200G can be divided into 2*100G, and 400G can be divided into 4×100G. This allows for the conversion of one high-speed port into four low-speed ports, facilitating the interconnection of switches with different-speed ports.