In this paper we discuss the use and implementation of on-chip filtered optical feedback in order to tune the emission
wavelength of a semiconductor ring laser. In this device, a directional coupler is used to couple part of the light emitted
by the laser to a feedback section integrated on the same chip. The feedback section contains two arrayed waveguide
gratings and a set of semiconductor optical amplifiers to provide filtering of particular longitudinal modes sustained by
the ring cavity. Each of the two counter-propagating modes supported by the ring laser is coupled back into the same
direction after filtering in the feedback section. We show that, for appropriate currents injected into the semiconductor
optical amplifiers, the emission wavelength can be tuned and that single mode operation in both directions is achieved.
We use a rate equation model in order to demonstrate tuning of the device theoretically.