Multiple-material mixing microstructure fiber and preparation method thereof

The invention discloses a multiple-material mixing microstructure fiber and a preparation method thereof. The preparation method comprises the following structure and preparation steps: preparing a hollow capillary tube by using a quartz glass tube; placing a metal rod or a semiconductor rod into a quartz glass sleeve tube, and then drawing a metal core or semiconductor core capillary tube; preparing a fiber mandrel by using pure quartz or quartz doped with a dopant or a semiconductor material as a substrate material; and arranging the metal core and (or) the semiconductor core capillary tube and (or) the hollow quartz capillary tube at the periphery of the fiber mandrel, placing the stacked prefabricated rods into the quartz glass sleeve tube, and then drawing the multiple-material mixing microstructure fiber. The mixing microstructure fiber which integrates multiple materials, namely a metal, a semiconductor and the like, has the advantages of excellent photoelectricity, high non-linearity and the like and can lay the foundation for the development of a future photoelectric mixing integrated optical circuit.