Q1: What is an 800G AOC cable?

A: An 800G Active Optical Cable (AOC) is a high-speed interconnect that integrates optical transceivers and fiber into a single assembly. It delivers 800Gbps bandwidth over multimode fiber for short-reach data center connections.

Key features include:

• 800Gbps transmission

• QSFP-DD form factor

• Low power consumption

• Plug-and-play installation

• 1–30m transmission distance

It is ideal for AI clusters, HPC systems, cloud data centers, and high-density Ethernet networks.

Q2: How does an 800G AOC cable work?

A: An 800G AOC converts electrical signals into optical signals inside the cable connectors, enabling ultra-high-speed transmission over multimode fiber.

The operating process is:

• The switch or server sends electrical signals to the AOC.

• The integrated optical engine converts electrical signals into optical signals.

• Optical signals travel through the built-in multimode fiber.

• The receiving end converts the optical signals back into electrical signals.

Compared with copper cables, AOCs provide longer transmission distances, better EMI immunity, lighter weight, and improved signal integrity for high-density network deployments.

Q3: What are the key features of the C-LIGHT 800G AOC?

A: The C-LIGHT 800G AOC is designed for next-generation AI networking and hyperscale data centers.

Key features include:

• 800Gbps full-duplex bandwidth

• QSFP-DD high-density design

• Low-power optical engine

• 850nm VCSEL technology

• Multi-vendor compatibility

• High reliability for 24/7 operation

These features provide stable, high-performance connectivity for demanding AI and cloud applications.

Q4: What are the advantages of an 800G AOC cable?

A: Compared with traditional copper interconnects, an 800G AOC offers several important advantages.

Longer Transmission Distance

• Supports longer links than DAC cables while maintaining signal integrity.

Lightweight Design

• Optical fiber is significantly lighter than copper, improving cable management.

High Bandwidth Density

• Supports 800Gbps transmission for next-generation AI and cloud networks.

Excellent EMI Immunity

• Optical transmission is immune to electromagnetic interference.

Simple Deployment

• Factory-terminated plug-and-play design reduces installation time.

It is an efficient solution for high-speed rack-to-rack and switch-to-switch interconnections.

Q5: Where are 800G AOC cables commonly used?

A: 800G AOC cables are widely deployed in high-bandwidth networking environments.

Typical applications include:

AI and GPU Clusters

• GPU interconnects

• AI model training

High-Performance Computing (HPC)

• Parallel computing systems

• Scientific research networks

Cloud Data Centers

• Server-to-switch connections

• Rack-to-rack interconnects

Spine-Leaf Networks

• High-density Ethernet fabrics

• Low-latency switching

Storage Networks

• High-speed storage connectivity

• Distributed storage systems

These applications require reliable, low-latency, and high-density optical connectivity.

Q6: Why choose an 800G AOC instead of a DAC cable?

A: While both solutions support high-speed interconnects, an 800G AOC is better suited for longer transmission distances.

Its advantages include:

• Longer transmission reach

• Excellent EMI immunity

• Lightweight optical fiber design

• Greater deployment flexibility

• Simplified cable management

DAC cables remain a cost-effective choice for short in-rack connections, while AOCs are preferred for rack-to-rack and longer high-speed optical links.

Q7: How do you choose the right 800G AOC cable?

A: When selecting an 800G AOC cable, consider the following factors.

1. Transmission Distance

Determine the required cable length, such as:

• 1m

• 3m

• 5m

• 10m

• 30m

2. Equipment Compatibility

Verify compatibility with:

• Ethernet switches

• AI servers

• GPU systems

3. Interface Type

Confirm the required connector type, such as:

• QSFP-DD

• OSFP (where applicable)

4. Fiber Type

Select the appropriate multimode fiber specification:

• OM3

• OM4

• OM5

Choosing the correct cable helps ensure stable performance, compatibility, and future scalability.

Q8: Why choose the C-LIGHT 800G AOC cable?

A: The C-LIGHT 800G AOC cable combines high bandwidth, low power consumption, and reliable optical transmission for next-generation AI and cloud networks.

It provides:

• 800Gbps high-speed connectivity

• High-density QSFP-DD design

• Low-latency optical transmission

• Excellent multi-vendor compatibility

• Fast plug-and-play deployment

Designed for AI computing clusters, cloud infrastructure, hyperscale data centers, and HPC environments, the C-LIGHT 800G AOC delivers a reliable, scalable, and future-ready optical interconnect solution.