Grinding device for preparing near-field optical probes and method therefor

The invention discloses a device for preparing near-field optical probes and a method therefor. The device comprises damping rubber, a support soleplate, a three-phase brushless motor, an adjusting bracket and an optical microscope, wherein the support soleplate is horizontally arranged on the damping rubber; and the three-phase brushless motor, the adjusting bracket and the optical microscope are fixed on the support soleplate. The method comprises the following steps: firstly, fixing a silica fiber on the adjusting bracket and above an abrasive substance in a set angle; and when the abrasive substance is rotated, making the fiber approach the abrasive substance and generate friction, rotating the fiber in different angles along the axial direction of the fiber, repeatedly approaching and rubbing a grinding sheet, and preparing the near-field optical probes with different shapes such as triangular pyramid, rectangular pyramid, circular cone and the like by grinding. The method overcomes the limitation of pre