Abstract: An optical monitor for an optical communication system is provided. The optical monitor includes a substrate having a waveguide formed thereon for carrying an optical signal. An optical tap is connected to the waveguide for tapping a portion of the optical signal. A demultiplexing device is connected to the optical tap for receiving the optical signal and separating the optical signal into a plurality of demultiplexed signals. A photodiode array receives the plurality of demultiplexed signals and generates an electrical signal relating to characteristics associated with the optical signal.