The present invention relates to device for space selective switching of an optical signal from an input access waveguide to a first selected output access waveguide. The light output out of the electroluminescent device is increased by arranging a colloidal layer between the substrate and the laminated body. The first phosphor may be an orange emitting Eu2, Mn2 doped strontium pyrophosphate, 2P2O7. The second and third electrodes are not in contact with each other and are separated by a gap. A transverse cutter having two rotating blades is used as cutting device.