INTERCONNECTIONS IN TELECOMMUNICATION NETWORKS

摘要

An interconnection (1) adapted to interconnect two or more elements of a telecommunication network, comprising, for each network element, at least one splitter device (11, 12, 13), and at least one switching unit (1419) and filter unit. The or each splitter device may comprise input means (32, 33, 34) connected to the network element to receive multi-wavelength signals therefrom, a splitter unit (35, 36, 37) to receive the signals and split them into split multi-wavelength signals, and a plurality of output means (38, 39, 40) to receive split multi wavelength signals. Each switching unit may comprise one or more input means (41-52) connected to an output means of a splitter device to receive split multi-wavelength signals therefrom, a switch (53-58) connectable to the input means to select split multi-wavelength signals from one of the input means, and an output means (59-64) to receive the selected split multi wavelength signals. Each filter unit may comprise an input means connected to the output means of the switching unit to receive the selected split multi-wavelength signals therefrom, a wavelength-selective filter to receive the selected split multi-wavelength signals and to select single-wavelength signals therefrom, and an output means to receive and to transmit the single-wavelength signals to the network element.