the rapid development of data centers , user demands are increasing. In order to meet the needs of users, the transmission rate of optical communication transmission has also increased and developed, from the previous 10G and 25G to today’s 100G and 200G. Facing the high-speed, high-density, low-cost, and low-power requirements of short-distance data centers on optical interconnect products, AOC active optical cables provide an excellent solution.

Introduction to 200G AOC

① 200G AOC has two types: Q SFP 28-DD AOC and QSFP56 AOC. The wavelength is 850nm. The QSFP56 package has four transmitting and receiving ports, but the transmission rate of each channel is as high as 56Gbps, and the modulation method is PAM4. The QSFP28-DD package has eight transmitting and receiving ports, the transmission rate of each channel is 28Gbps, and the modulation mode is NRZ. 200G AOC is applied to 200G Ethernet with a transmission distance of 1-100 meters .

② 200G AOC to 2x 100G AOC, one end is connected to one 200G optical module , and the other end is connected to two 100G optical modules, the maximum transmission rate is 212.5Gbps. The power consumption of the 200G optical module is less than 4W, and the power consumption of the 100G optical module is less than 2.5W. Mainly used in data center 200G to 2-way 100G Ethernet branch links.

③200G AOC to 4x 50G AOC adopts 8-channel full-duplex active optical cable , one end is connected to one 200G optical module, and one end is connected to four 50G modules, with a maximum rate of up to 206.25Gbps. The power consumption of 200G is less than 4W, and the maximum power consumption of each 50G module is less than 1.5W. Mainly used in data center 200G to 4 50G Ethernet branch links.

200G AOC working principle

The working principle of AOC is not much different. The electrical signal is input through the A terminal, and the electrical signal is converted into an optical signal of a specific wavelength through the electrical-optical conversion device. After the optical signal is modulated and coupled, it is input into the transmission optical cable; After detection, it is amplified, processed, and converted to output a corresponding electrical signal.