Table 2 Calculation parameters for modeling the laser under feedback
From: Exploring the feedback limits of quantum dot lasers for isolator-free photonic integrated circuits
Symbol | Physical meaning | Value | Unit | Determination method |
|---|---|---|---|---|
\({\tau }_{L}\) | Roundtrip time | 42 | ps | Calculated from cavity length |
\({f}_{{ROF}}\) | Relaxation oscillation frequency | 2.8 | GHz | From RIN measurement |
\({\alpha }_{H}\) | Linewidth enhancement factor | 0.65 | None | From Linewidth enhancement factor measurement |
\(R\) | Laser facet reflectivity | 32% | None | From Fresnel equation calculation |
\({\Gamma }_{R}\) | Damping factor | 3.6 | GHz | From RIN measurement |
