Spectral Behaviors of Semiconductor Lasers Locked to External Light Injected from a Current-Modulated Laser

摘要

We have investigated the spectral characteristics of semiconductor lasers locked to the external light injected from a modulated laser. The numerical model for semiconductor lasers under the external optical injection is based on the Lang's equation and has been extended in order to take into account the simultaneous injection of the multiple sidebands of the current-modulated laser. The numerical simulation results show that the unselected sidebands will affect the optical and RF-spectral characteristics even when the semiconductor laser is locked to the target sidebands. The simulation results are confirmed by the experimental results.