Optical interconnections in an ATM switch

摘要

A device in an ATM switch in which a plurality of stages are interconnected, wherein the stage has a plurality of basic switches, characterised in that said device converts a wavelength-multiplexed optical signal in which a plurality of electronic-signal cells of different destinations are wavelength-multiplexed into electronic-signal cells and inputs one of the electronic-signal cells into an input port of said basic switch, said device comprising: means for generating a plurality of optical-signal cells by wavelength-demultiplexing said wavelength-multiplexed optical signal; means for converting said optical-signal cells into said electronic-signal cells; and means for selecting an electronic-signal cell destined for the input port among said electronic-signal cells and inputting the selected electronic-signal cell to the input port.