Dynamic properties of FP-LD transmitters using side-mode injection locking for LANs and WDM-PONs

Side-Mode-Suppression-Ratio οf Injection-Locked Fabry-Perot Lasers

“…V = 4 × 10 −12 cm 3 is the volume of the active area, v g = c/n r is group velocity with n r = 3.4, Γ = 0.5 is the confinement factor, k c is the external light coupling factor [3], which in our simulation has the calculated value of 1.6 × 10 11 s −1 . S inj is the injected photon density, α = 3 is the linewidth enhancement factor and ∆ω is the frequency detuning between the master laser and the slave laser.…”

“…[3][4][5][6][7][8]. Figure 2 shows transient regime of a free--running as well as an injection-locked semiconductor laser.…”

“…tunable laser in OLT. In other words, the injection locked regime can be considered monomode when SMSR is above a certain level, usually 30 dB [1,3]. In this paper, we investigate how the number of injection-locked modes changes with the injection power of the master laser in OLT.…”

“…In order to do that, it is necessary to take into consideration the full scale model of the rate equations which comprises as many as possible free-running modes. To the best of our knowledge, the problem of injection locking in WDM-PONs has been treated by models based on few modes [1,3], which could cause significant discrepancy with experimental results. In addition to this, the influence of spontaneous emission coupling factor has not been previously considered in the treatment of injection-locked FP-LDs.…”

“…The model of injection-locked semiconductor laser is based on multimode rate equations [2][3][4] with extra terms describing the locking phenomenon. These equations describe carrier density n, photon density for every mode S m and the phase difference φ m between the phase in the injected and in the free-running state.…”