%0 Journal Article
%T Optical Feedback Sensitivity of a Semiconductor Ring Laser with Tunable Directionality
%J Photonics | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/photonics6040112
%X We discuss the sensitivity to optical feedback of a semiconductor ring laser that is made to emit in a single-longitudinal mode by applying on-chip filtered optical feedback in one of the directional modes. The device is fabricated on a generic photonics integration platform using standard components. By varying the filtered feedback strength, we can tune the wavelength and directionality of the laser. Beside this, filtered optical feedback results in a limited reduction of the sensitivity for optical feedback from an off-chip optical reflection when the laser is operating in the unidirectional regime. View Full-Tex
%U https://www.mdpi.com/2304-6732/6/4/112