▎ 摘　　要

NOVELTY - A graphene heptamer Fano resonance-based refractive index sensor comprises a Y-shaped fiber circulator having three ports, namely input, sensing and output, a graphene heptamer disposed on the silica surface of the sensing end, the graphene heptamer high quality Fareno resonance. USE - Graphene heptamer Fano resonance-based refractive index sensor. ADVANTAGE - The sensor has high sensitivity and change of refractive index of resonance up to 1720 nm/RIU. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for manufacturing graphene heptamer Fano resonance-based refractive index sensor.