▎ 摘　　要

NOVELTY - The laser has a 1550nm-wavelength laser connected with a 1060nm-wavelength laser and formed with an annular resonant cavity,. The 1060nm-wavelength laser is connected with an annular resonator. A 1550nm-annular cavity is fixed with an erbium-doped fiber, a 1550nm isolator and a 1550nm-coupling output part. A 1060nm annular cavity is fixed with an ytterbium-doped fiber, a 1060nm-coupling output part and a 1060nm-optical isolator. An inverted 1550nm/1060nm wavelength division multiplexer is fixed with a polarization controller, a saturable graphene absorber and two chambers of a pumping source. USE - Graphene-based dual-wavelength synchronization Q-switching fiber optic laser. ADVANTAGE - The laser is small in size, simple in structure and easy to operate, and realizes optical fiber communication and nonlinear frequency conversion process with wide range of multiple wavelength pumping detecting spectrum and Raman scattering spectrum applications. DESCRIPTION OF DRAWING(S) - The drawing shows a circuit diagram of a graphene-based dual-wavelength synchronization q-switching fiber optic laser.