Direct Estimation of the Optical Feedback Factor C from the Amplitude of the Optical Feedback Interferometric Signal

In this paper, we combine the intrinsic properties of the optical feedback factor C with a pre-calibration technique to assess the value of C when the laser operates in and across the weak, moderate and strong feedback regimes. The proposed technique directly estimates C via the amplitude of the optical feedback signal as a first approximation. It thus requires much less computing resources than existing algorithms. Experimental results show that an estimation of C with a precision better than