High-birefringence hollow-core anti-resonance optical fiber based on resonant coupling effect enhancement

The invention relates to a high-birefringence hollow-core anti-resonance optical fiber based on resonant coupling effect enhancement. The high-birefringence hollow-core anti-resonance optical fiber comprises a cladding region and an inner fiber core region, the inner fiber core area is an air area or a vacuum area, the cladding area comprises an outer cladding and an inner cladding, and the outer cladding is a hollow cylinder with a certain thickness; the inner cladding is composed of a plurality of circles of micro capillary tubes which are arranged in the outer cladding and are sequentially connected from inside to outside; the outermost circle of micro capillary tubes are uniformly distributed in the circumferential direction and are fixedly connected with the inner wall surface of the outer cladding; the micro capillary tubes in the same circle of other circles are arranged in a spaced mode, the number of the micro capillary tubes in the other circles is two less than that of the micro capillary tubes in