A process for creating an optical and electric connection of electro-optical components that can be implemented inexpensively and has long-term stability and thermal stability, so that information-transmitting light from one or more waveguides of one component can be coupled into one or more waveguides of the other component in an economically feasible manner. An optical and/or electro-optical connection of two optical and/or electro-optical components is created by mounting the two components directly on a single common carrier board by welding with electromagnetic radiation in the wavelength range around 1 &mgr;m without using any auxiliary carriers.