▎ 摘　　要

NOVELTY - The sensor has a single-mode optical fiber whose side edge is provided with a gold film, a graphene oxide film and a gold nano-rod layer, where thickness of the gold film is about 40-60 nm, and thickness of the graphene oxide film is about 0.1-1 nm. A surface of the gold film is fixed with the graphene oxide film by adopting a covalent bonding mode. The gold nano-rod layer is fixed on a surface of the graphene oxide film by an electrostatic self-assembly mode, where polishing surface length of the single-mode optical fiber is about 0.5-2 cm and thickness of a metal film is about 50 nm. USE - Oxidized graphene and gold nano-rod-based sensitivity-enhanced optical fiber SPR sensor for use in physical, chemical, biological, medical and food safety fields. ADVANTAGE - The sensor is simple in structure, and has high sensing sensitivity and high stability performance, and can realize measurement of biomass and chemical quantity in an effective manner. The sensor utilizes plasma coupling effect between a gold film surface plasma wave and a local area surface plasma wave of a gold nano rod surface so as to enhance electric field intensity, and can promote charge transfer of graphene oxide between the gold film and the gold nano-rod so as to increase plasma interaction between surface wave and a substance to-be-detected, thus improving detection sensitivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an oxidized graphene and gold nano-rod-based sensitivity-enhanced optical fiber SPR sensor manufacturing method. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of an oxidized graphene and gold nano-rod-based sensitivity-enhanced optical fiber SPR sensor.