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. It integrates an optical cable of a specified length with two optical modules to form a convenient transmission channel, and the cable length can be customized according to customer application requirements. An AOC resembles a standard cable assembly (e., QSFP or SFP form factor), but internally, it converts electrical data into laser light and back again.