An apparatus and method for tuning optical components are provided. The apparatus and method may be used for wavelength selection in the context of optical communication. An example apparatus may include a plurality of tunable components, each having an optical output. The apparatus may also include a switch that during each period of a plurality of periods has a switch output that contains a selected one of the optical outputs. The apparatus may operate such that during each period of the plurality of periods, at least one of the tunable components other than the tunable component having the selected optical output is available for tuning.