▎ 摘　　要

NOVELTY - The sensor has a broadband light source unit (1) connected with a single mode optical fiber unit (2) and an inclined fiber optical grating unit (3). The inclined fiber optical grating unit is connected with a spectrum analyzer (6) and the single mode optical fiber unit. A sample pool body (5) is formed with a sealing hole and connected with the inclined fiber optical grating unit. Length of the inclined optical fiber optical grating unit is about 5-15 mm. Thickness of a graphite coating layer is about 2-5 nm. USE - Graphene coating inclined optical fiber grating based liquid refractive rate sensor. ADVANTAGE - The sensor is environmental friendly, and has high sensitivity. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene coating inclined optical fiber grating based liquid refractive rate sensor. Broadband light source unit (1) Single mode optical fiber unit (2) Inclined fiber optical grating unit (3) Sample pool body (5) Spectrum analyzer (6)