Transmission system with a central control station and a number of decentralized stations, by means of an optical transmission network work time connected to this central station.

摘要

The invention relates to a communication system, comprising a central station and a number of decentralised stations connected to that central station via an optical transmission network, signals to be transmitted on the side of the central station, respectively on the side of the decentralised stations being converted out of the electrical domain into the optical domain, and optical signals to be received being converted out of the optical domain into the electrical domain, and moreover signals to be transmitted on the side of the central station, respectively on the side of the decentralised stations being multiplexed and signals to be received being demultiplexed, which optical transmission network comprises long-distance conductors and local conductors, more local conductors being connected to such a long-distance conductor by means of passive couplers and the decentralised stations being connected to the respective opposite ends of those local conductors. Characterising is that said signals to be transmitted respectively to be received are multiplexed in the frequency domain (FDM).