Verfahren und Vorrichtung zur Lichteinkopplung in einen planaren Wellenleiter

The invention relates to a process and a device for injecting light into a planar waveguide (thin, light-conducting film) consisting of the auxiliary waveguide guiding the light to be injected. In particular, the light is injected by means of the evanescent field of the auxiliary waveguide which is brought into a compression contact with the coating-free planar waveguide.