Abstract: Optoelectronic components, specifically, ceramic optical sub-assemblies are described. In one aspect, the optoelectronic component includes a ceramic base substrate having a pair of angled (or substantially perpendicular) faces. The electrical traces are formed directly on the ceramic surfaces and extend between the pair of faces. A semiconductor chip assembly is mounted on the first face of the ceramic base substrate and a photonic device is mounted on the second face. Both the semiconductor chip assembly and the photonic device are electrically connected to traces on the ceramic base substrate. The semiconductor chip assembly is generally arranged to be electrically connected to external devices. The photonic devices are generally arranged to optically communicate with one or more optical fibers. The described structure may be used with a wide variety of photonic devices.