An arrayed waveguide grating comprises at least two free space regions, a plurality of grating arms extending between the two space regions, a passivation layer formed over the arrayed waveguide grating and a plurality of inputs at least to one of the free space regions to receive a plurality of channel signals separated by a predetermined channel spacing. The predefined execution environment includes predefined environment objects, at least a portion of which are dynamically mutatable. The insert may be of a transparent plastic material so that the inside surfaces of the carton may be decorated in a fashion independent of the shape of the product displayed or the manner in which it is positioned. The connecting part and the central sleeve are produced in an inexpensive manner as lightweight structure formed from sheet metal through a shaping process.