At present, 40G SR4 QSFP + optical modules have been widely used for short-distance interconnection of 40G networks. This optical module is small and compact, and can use four channels to support high-speed data transmission up to 40G. However, another cable that can replace this optical module has become popular in data center applications. It is 40G QSFP + AOC (active optical cable)
40G QSFP + AOC usually has QSFP+ connectors at both ends, which connect the optical cables at both ends through a length of optical cable. 40G QSFP + AOC also has the type of branch cable, which has a QSFP + connector at one end and multiple SFP+ connectors or LC duplex connectors at the other end.
Although 40G SR4 QSFP + optical modules have many advantages and are ideal solutions for short-distance interconnection of 40G networks, 40G QSFP + AOC also has similar functions as optical modules, and the advantages are not inferior to 40G SR4 QSFP + optical modules, even You can use it instead of 40G SR4 QSFP+ optical module to transmit signals. The following is a comparison between 40G QSFP + AOC cable and 40G SR4 QSFP+ optical module. Hope to help you find the most suitable solution for your application.
