A device for forming an optical connection between an optoelectronic device and an optical fiber and for forming an electrical connection between the optoelectronic device and a substrate, a system including the device and materials, and methods of forming the device and system are disclosed. The device for forming an optical connection includes a—light transmission medium and electrical connectors, which are at least partially encapsulated. In addition, the device includes guide grooves configured to receive guide pins from a fiber ribbon connector, such that when the fiber ribbon connector is attached to the device, fibers of the ribbon align with the optoclectronic device via the light transmission medium.