Single Fiber Bidirectional EDFA Amplifier models include a Red and a blue port designed for single fiber DWDM Solution. The design of these models is used for single-fiber DWDM transmission systems.

Single fiber bidirectional EDFA amplifier include an Red and blue port,

Red optical amplifier include an blue out (Drop blue) port and blue in (Add Blue) port, Red optical amplifier Amplify red optical signal, blue out port and blue in port are used to access the amplifier to amplify the blue optical signal.

Blue optical amplifier include an red out (Drop red) port and red in (Add red) port, Blue optical amplifier Amplify blue optical signal, red out port and red in port are used to access the amplifier to amplify the red optical signal, Blue: 1528nm~1543nm. Red: 1547nm~1561nm.

The direction of the signal can refer to the following figure