Optical Tamm state plasmon-based light refractive index sensor

The invention discloses an optical Tamm state plasmon-based light refractive index sensor, comprising a metal film and a distributed Bragg reflector, wherein the distributed Bragg reflector comprises a plurality of layers of high refractive index layers and air layers, which are alternatively arranged; two adjacent high refractive index layers are connected through a connection block; the metal film is tightly adjacent to one side of the high refractive index layer in the distributed Bragg reflector. The optical Tamm state plasmon-based light refractive index sensor has the characteristics of being simple in structure, small in volume, easy to fabricate, easy to integrate, large in sensing range, high in sensitivity and the like; a new method is provided for development of the refractive index sensor; development of a micro-nano type light refractive index sensor with high sensitivity and wide measurement range is further promoted.