What are the advantages of 400G QSFP-DD AOC cables?

As a high-speed fiber optic connector with a transmission rate of 400Gbps, 400G AOC is widely used in data centers and high-performance computing and other fields due to its high-speed and high-bandwidth characteristics.

400G AOC Cable.png

I. 400G AOC Cable Description

400G AOC cable is a high-speed fiber optic connector that can be used in 400G Ethernet with a transmission distance of 1-100 meters. It adopts QSFP-DD package form, each port contains 4 transmit and 4 receive channels, a total of 8 channels, each channel transmission rate of 50Gbps, the total transmission rate of 400Gbps. 400G AOC cable has a higher transmission rate and larger bandwidth than the traditional 100G AOC cable, which can meet the needs of higher speed data transmission.

Second, 400G AOC common several common types

1、400G QSFP-DD AOC

400G QSFP-DD AOC adopts QSFP-DD package module at both ends, using VCSEL array technology, PAM4-based signal modulation at 26.7Gbps baud rate, and each connector owns eight 50G PAM4 electrical channels, which makes the rate of each channel reach up to 50Gbps. qsfp-dd is used as a popular package mode in 400G data centers to realize the function of interconnection between devices. QSFP-DD is a popular packaging model in 400G data centers, which realizes the function of interconnection between devices.

2、400G QSFP-DD to 2x200G QSFP56 AOC

400G QSFP-DD to 2x200G QSFP56 AOC active fiber optic cable adopts 400G QSFP-DD connector at one end and two 200G QSFP56 connectors at the other end, which is used for interconnecting 1 channel of 400G and 2 channels of 200G Ethernet in data centers, and each 200G QSFP56 connector owns four 50G PAM4 electrical channels. electrical channels.

3、400G QSFP-DD to 4x100G QSFP28 AOC

400G QSFP-DD to 4x100G QSFP28 AOC active optical cable with 400G QSFP-DD connector at one end and four 100G QSFP28 connectors at the other end is used for interconnecting 1 channel of 400G and 4 channels of 100G Ethernet in data center. Using reliable VCSEL array technology, it features low power consumption and low cost.

4、400G QSFP-DD to 8x50G SFP56 AOC

400G QSFP-DD to 8x50G SFP56 AOC active optical cable adopts 400G QSFP-DD connector at one end, and adopts eight 50G SFP56 connectors at the other end, which is used for interconnecting 1 channel of 400G and 8 channels of 50G Ethernet in data centers, and each 50G SFP56 connector owns one 50G PAM4 electrical channel.

Advantages of 400G AOC cables

The advantage of 400G AOC cable is that it has a higher transmission rate and greater bandwidth. Compared with traditional 100G AOC cables, 400G AOC cables can transmit more data, thereby increasing system throughput and response time. In addition, 400G AOC cables can support more channels, thereby increasing the system's bandwidth and transmission capacity. These advantages make 400G AOC cables widely used in modern digital systems.

In summary, 400G AOC cables can meet the demand for higher speed data transmission. When using 400G AOC cables, some issues need to be considered, such as power and cost, cabling time and cost.