Optical transmitter and/or receiver assembly comprising a planar optical circuit

The invention relates to an optical transmitter and/or receiver assembly comprising at least one transmitter component and/or at least one receiver component, in addition to a planar optical circuit with at least one integrated waveguide. According to the invention, light from the transmitter element is coupled into a waveguide of the planar optical circuit and/or light from the waveguide of the planar optical circuit is uncoupled and guided onto the receiver component. The assembly is provided with a lens for optically coupling the waveguide(s) of the planar optical circuit to a fiber-optic that can be fixed to the transmitter and/or receiver assembly, said lens being positioned on the planar optical circuit.