Abstract: An illuminated vehicle window is provided. The illuminated window has a first layer of tempered glass; a second layer of tempered glass; a binding layer between the first and second layers of tempered glass; a channel located in the binding layer and between the first and second layers of tempered glass; a light diffusing optical fiber (LDF) located in the channel; and a light source operably connected to the LDF. Also provided is an illuminated multi-layer glass structure. Further provided is a laminated light diffusing fiber (LDF) device in which the channel and LDF define a design in the binding layer and in which the width of the channel is at least 5% greater than the diameter of the LDF.