A transceiver comprising a CMOS chip and a laser coupled to the chip may be operable to communicate an optical source signal from a semiconductor laser into the CMOS chip. The optical source signal may be used to generate first optical signals that are transmitted from the CMOS chip to optical fibers coupled to the CMOS chip. Second optical signals may be received from the optical fibers and converted to electrical signals via photodetectors in the CMOS chip. The optical source signal may be communicated from the semiconductor laser into the CMOS chip via optical fibers in to a top surface and the first optical signals may be communicated out of a top surface of the CMOS chip. The optical source signal may be communicated into the CMOS chip and the first optical signals may be communicated from the CMOS chip via optical couplers, which may comprise grating couplers.