Patent ID: 7466882

Claim:
A semiconductor device, comprising: a substrate; an optical WDM signal input for reception of a first WDM signal and an optical WDM signal output, the optical WDM signal input and the optical WDM signal output being provided on the substrate; a plurality of electrical signal outputs and a plurality of electrical signal inputs provided on the substrate, each of the plurality of electrical signal inputs supplying a corresponding one of a plurality of input electrical signals; a decombiner provided on the substrate and coupled to the optical signal input the decombiner being configured to separate the first WDM signal into a plurality of optical channel signals; a plurality of photodetectors provided on the substrate, each of the plurality of photodetectors receiving a respective one of the plurality of optical channel signals and outputting a corresponding one of a plurality of output electrical signals, each of the plurality of output electrical signals being provided to a corresponding one of the plurality of electrical signal outputs; a plurality of laser sources provided on the substrate, each of the plurality of laser sources generating a corresponding one of a plurality of optical outputs, each of the plurality of optical outputs having a corresponding one of a plurality of wavelengths; a plurality of electro-optic modulators provided on the substrate, each of the plurality of electro-optic modulators being coupled to a respective one of the plurality of electrical signal inputs and receiving a respective one of the plurality of input electrical signals, each of the plurality of electro-optic modulators outputting a corresponding one of a plurality of modulated optical channel signals; and an optical combiner provided on the substrate, the optical combiner receiving the plurality of modulated optical channel signals and combining the plurality of modulated optical channel signals to form a second WDM signal, the second WDM signal being supplied to the optical WDM signal output.