Comparison between Single and Dual Ring Feedback Phase-shift Controlling for Dual-Ring Erbium-Doped Fiber Laser

The physical models of single and dual ring feedback phase-shift controlling are proposed in this article, based on the method of chaos feedback phase-shift for dual-ring erbium-doped fiber laser. On this basis, the output of system was simulated by computer. After synthetically analyzing the simulation results, we reached a conclusion that it´s effective to control the output into chaos state, stable state or periodic state. By comparison, we knew the feedback coefficient and feedback phase-shift have different impacts on different models.