A SINGLE-FIBER WDM LOCAL ACCESS NETWORK-BASED ON AMPLIFIED LED TRANSCEIVERS

A potentially low-cost local access network is proposed and demonstrat ed, It provides point-to-point individual links carried by a single op tical fiber between a central office and a passive router distributing the links to the users, The system is based on high-power LED's, spec tral slicing, wavelength division multiplexing (WDM), and frequency ro uting, Each link is terminated at both ends by a single optical device transmitting and receiving alternatively according to the so called ' 'ping-pong'' mode, Such an arrangement simplifies significantly the im plementation of multiple access systems.