▎ 摘　　要

NOVELTY - Biosensor comprises a photodetector, a variable filter coupled to the photodetector and transmitting different resonant frequencies based on an applied voltage, where the variable filter comprises several metal pads, and a graphene resonance pattern formed between the metal pads. USE - As biosensor. ADVANTAGE - The biosensor acquires information of various wavelength bands even with small number of pixels, maintains high spectral resolution and reduces optical element. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing a biosensor.