▎ 摘　　要

NOVELTY - The system has a graphene saturable absorber fixed on a surface of a transmissive window. A pumping source transmits pumping light to an erbium doped gain fiber through an optical fiber coupler. A first optical fiber collimator generates collimated light that is amplified by an isolator. A rotating frame is fixed on a second optical fiber collimator for rotating the rotating frame for realizing fine adjustment of linear polarized light of a polarization maintaining optical fiber. A coupler generates emergent light for outputting power to a laser. USE - Graphene reflector switching wavelength mode-locked fiber laser system. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene reflector switching wavelength mode-locked fiber laser system.