Optical bistability via an external control laser in an erbium-doped-fiber laser

摘要

Highlights ? Optical Bistability in an erbium-doped-fiber laser with an external control laser is studied. ? The controllability of OB without need to resort the erbium-ion concentration or length of the EDF. ? The power and wavelength of the external control laser can affect the bistable region. Abstract We demonstrate a new scheme for realizing the Optical Bistability (OB) in an erbium-doped-fiber laser with an external control laser. It is found that the OB can be significantly modified by changing the power and the wavelength of the control laser. We give an explanation of the bistability phenomenon based on numerical simulations, which are agreed very well with our experim