Kohn, U.U.KohnLudwig, R.R.Ludwig2022-03-082022-03-081995https://publica.fraunhofer.de/handle/publica/303327EP 414333 A UPAB: 19950314 An optical data network, for bidirectional communication between subscriber stations, has an optical fibre cable with station connections including optical amplifiers (OVn-OVn+3). Each optical amplifier has a connection to a power supply (IV) via an inductive coupling. Each station has a data input and output. The value of the bias current IIV) determines the gain and sensitivity of the amplifier. In combination with the switching in of a modulating current the fibre optic line can handle bidirectional data transmissions. ADVANTAGE - Point to multipoint connection possible. Easily extended. ADVANTAGE - Point to multipoint connection possible. Easily extended. 2/4de608621patent1989-3928116