▎ 摘　　要

NOVELTY - The sensor has a cylindrical optical fiber section (2) connected with a joint (1) i.e. SM-A series connector. A tapered processing section (3) is provided with a processing section fiber core (31), a noble metal film (32) and a graphite thin film (33) from inside to outside. A top end of the processing section fiber core is connected with a top end of another noble metal film (34), where the two noble metal films are made of gold material and the processing section fiber core and a fiber core of the optical fiber section are integrated multi-mode optical fiber cores. USE - Graphene thin film based tapered optical fiber sensor for use in biological, chemical and medical applications. ADVANTAGE - The sensor has simple structure, small volume and high sensitivity, and can realize online detection and real-time analysis of micro-gas, liquid, chemical element and DNA in biological, chemical and medical fields. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene thin film based tapered optical fiber sensor. Joint (1) Cylindrical optical fiber section (2) Tapered processing section (3) Processing section fiber core (31) Noble metal films (32, 34) Graphite thin film (33)