Fiber to the x#Active optical network

Active Optical Network ( AON ) are fiber networks - also contain "active" components such as switches, routers or multiplexers - in contrast to the Passive Optical Networks (PON ). This allows them to bridge longer distances and larger bandwidths transmitted as PON, but also require higher installation and operating costs.

The currently most widely used application of AON is the HYTAS of Deutsche Telekom. Currently under development for future use AON architectures based on PtP technologies.