The standardised high-speed module slots of the active components, such as SFP, SFP +, QSFP + and QSFP28, allow either the use of transceiver modules or AOC cable sets. An AOC cable consists of two transceiver modules with a prefabricated fibre optic cable. In contrast to conventional transceiver solutions or copper-based connections, the AOC cable is characterised by high energy efficiency and convinces with an attractive price/performance ratio. The electrically insensitive medium fibre optic also allows extremely high packing densities, is bit-error-free and is insensitive to electromagnetic interactions even over long distances. Application areas of active optical cables are mainly 10G/40G/100G Ethernet, Infiniband, Fibre Channel, Storage Area Networks (SAN) as well as data centres.