Patent ID: 8155488
Filing Date: 2012-04-10
Classification: B82Y,G02B,G02F,H01S,H04B,H04J

Abstract:
1. A photonic integrated circuit comprising: a substrate; and a plurality of signal channels provided on the substrate, each of the plurality of signal channels comprising: a circuit configured to determine a respective one of the plurality of emission wavelengths and a corresponding one of a plurality of power values associated with each of the plurality of signal channels from the plurality of tones; and an optical combiner having a plurality of inputs and an output, wherein each of the plurality of signal channels comprises a photodiode configured to receive the corresponding one of the plurality of modulated optical outputs and attenuate the corresponding one of the plurality of modulated optical outputs to provide a corresponding one of a plurality of attenuated optical signals, each of the plurality of inputs of the combiner configured to receive a respective one of the plurality of attenuated optical signals, the combiner combining the plurality of attenuated optical signals into a WDM signal provided at the output of the combiner.