A composite pane is presented. The composite pane includes an outer pane and an inner pane that are bonded to each other via an intermediate layer. The composite pane further includes a light-diffusing glass fiber that is suitable for emitting light by diffusion via its side wall along its extension length. According to one aspect, the glass fiber is arranged, in sections, between the intermediate layer and the outer pane, and is arranged, in sections, between the intermediate layer and the inner pane. According to another aspect, the glass fiber is routed through an opening in the intermediate layer.