Our proposal adds an arrayed waveguide grating (AWG) operated at 1.5 mu m to the star coupler of a passive optical network (PON) in the remote node (RN) and separates the original PON and the overlay via 1.3/1.5 mu m splitters, which guarantees the maintenance function

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The all-optical transparent interconnection of two experimental OFDM-LANs is demonstrated. Fiber amplifiers are used to compensate network losses. Each LAN is equipped with four fully engineered, microprocessor- controlled, absolute frequency stabilized subscriber stations. The interconnection is realized utilizing a full duplex star coupler as central node. A proposal to extend the realized network for frequency re-use is given

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