Abstract: An optical device for minimizing channel drift in a wavelength division multiplexed communication system. The device includes a laser source providing an output signal including a plurality of optical channels. The output signal from the laser is received by a plurality of modulators. Each of the modulators is configured to provide an associated modulated optical signal. Each of a plurality of optical filters receives an associated one of the modulated optical signals and is configured to select an associated optical channel from the modulated optical signals. The optical filter output signals may be combined onto an aggregate path to a receiver including receiver optical filters for selecting the transmitted channels.