▎ 摘　　要

NOVELTY - The device has a quartz substrate (8) provided with a perfect matching layer (9). A small hole (1) filled with temperature sensitive liquid toluene is coated with a metal gold layer (2). The small hole filled with the temperature sensitive liquid toluene and the metal gold layer form a sensing channel. A plasma module excited by the metal gold layer surface reaches a phase matching in a specific wavelength range. The graphene hole (3) surrounds a periphery of the small hole filled with the temperature sensitive liquid toluene so as to reduce additional loss of light energy in a device. The distance between the adjacent air hole is 2.4 m-2.8 m. USE - Used as a device for improving double refraction and temperature measuring precision based on surface plasmon resonance (SPR). ADVANTAGE - The device realizes refractive index of the quartz substrate is 1.45, temperature resolution reaches 0.005-291 degrees C, average temperature sensitivity is -6.931 nm/ degrees C, and the double refraction reaches 0.0384. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the device for improving double refraction and temperature measuring precision based on surface plasmon resonance. Small hole (1) Metal gold layer (2) Graphene hole (3) Quartz substrate (8) Perfect matching layer (9)