▎ 摘　　要

NOVELTY - The sensor comprises a fibre core and a sleeve pipe cladding air holes (1) that are arranged in the fibre core. The cladding air holes are arranged according to the hexagonal lattice array. The fibre core is eccentrically arranged in the sleeve pipe side of the core eccentric close sleeve pipe. The sleeve pipe is an annular cavity structure. The inner portion is filled with a liquid analyte (5). USE - SPR-PCF sensor with graphene. ADVANTAGE - The sensor is added with a layer of thin graphene improved sensitivity on the gold film, not performing D-type polishing damage to the photonic crystal optical fiber PCF, moving the fiber core area upwards, the analogue ratio reaches the polishing structure. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a SPR-PCF sensor. 1Sleeve pipe cladding air holes 2Quartz filler 3Gold-plated film 4Thin graphene layer 5Liquid analyte