▎ 摘　　要

NOVELTY - The graphene-based bragg grating wavelength tunable narrow line-width laser has a first pump laser (201), doped optical fiber (202), the first circulator (203) and graphene Bragg grating (204). The graphene bragg grating is connected to the first terminal of the first circulator from in turn by the doped optical fiber comprises a fiber core, cladding and covered with graphene of the cladding to the outside. The core to the second end of the first circulator returns the adjusted wavelength of the central wavelength of the laser signal, and the third output end of the first circulator. USE - Graphene-based bragg grating wavelength tunable narrow line-width laser. ADVANTAGE - The bragg grating central wavelength adjusting accuracy and response time, and can obtain the super-narrow line width laser signal based on rayleigh optical fiber. The bragg grating central wavelength adjusting accuracy and response time is improved. The input pumping light isolates and reduce interference. DESCRIPTION OF DRAWING(S) - The drawing shows a structural schematic diagram of the graphene-based bragg grating wavelength tunable narrow line-width laser. First pump laser (201) Doped optical fiber (202) First circulator (203) Graphene bragg grating (204) Second pump laser (301)