▎ 摘　　要

NOVELTY - The utility model claims a temperature sensing device based on oxidation graphene coating micro-nano fibre grating, relating to the technical field of optical fibre sensing, specifically to a temperature sensing device based on oxidation graphene coating micro-nano fibre grating. The utility model model claims a temperature sensing device for solving the problem of high cost, low sensitivity, easy to be interfered by the external environment and so on in order to solve the problem that the temperature sensing device applied in the current industry. The utility model model comprises a broadband light source, two single-mode transmission optical fibre, an optical fibre grating sensing unit and a spectrometer. wherein the optical fibre grating sensing unit comprises an oxidation graphene film and a double-cone micro-nano fibre grating. when the external temperature is changed, the effective refractive index of the graphene oxide will change, at the same time, under the action of evanescent field, the optical signal center wavelength phase transmitted in the optical fiber grating sensing unit changes, indirectly analyzing the temperature change through the spectrometer, so as to finish the sensing.