▎ 摘　　要

NOVELTY - The method involves providing a wavelength light system with a light source, an optical fiber isolator, an optical circulator, an optical fiber optical grating sensor, an electrode driver and a spectrum analyzer. The light source is connected with the optical fiber isolator and the optical circulator. An end of the optical circulator is connected with the optical fiber isolator. Another end of the optical fiber isolator is connected with a spectrum analyzer and the fiber optical grating sensor, where wave length output is obtained by using a Bragg optical fiber optical grating. USE - Graphene coating fiber optical grating based electrode discharge circuit wave length switching control method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating a graphene coating fiber optical grating based electrode discharge circuit wave length switching control method.