Optical coupling structure

The invention relates to an optical coupling structure, which comprises a tail fiber assembly, an optical waveguide chip, a light spot adjusting assembly and a coupling assembly, and is characterized in that the light spot adjusting assembly is fixed with the end surface of the optical waveguide chip; the coupling assembly is fixed with one end of the tail fiber assembly, the light spot adjusting assembly adjusts the size of a light spot at the output end of the optical waveguide chip including the optical waveguide, and the coupling assembly couples the light spot into an optical fiber included in the tail fiber assembly. According to the optical coupling structure provided by the invention, the phenomenon that the size of a light spot mode field is seriously mismatched can be improved, and the coupling stability of the optical waveguide and the optical fiber can be improved. 本申请涉及一种光耦合结构，包括尾纤组件、光波导芯片，所述光耦合结构还包括光斑调整组件及耦合组件，所述光斑调整组件与光波导芯片端面固定；所述耦合组件与尾纤组件的一端固定,所述光斑调整组件对光波导芯片包括光波导的输出端的光斑尺寸进行调整，所述耦合组件将所述光斑耦合进入所述