▎ 摘　　要

NOVELTY - The utility model claims an optical phase modulator and a light beam scanner, the optical phase modulator comprises a substrate, strip-shaped optical waveguide structure according to the first direction on the substrate, covering the upper part of the strip-shaped optical waveguide structure of the graphene film; first metal electrode set on one side of the strip-shaped optical waveguide structure in a second direction, and set at the other side of the strip-shaped optical waveguide structure of the second metal electrode and the first metal electrode and the second metal electrode are contacted and connected with the graphene film; wherein the first direction and the second direction are parallel to the substrate, and the first direction is vertical to said second direction. The optical phase modulator using a graphene film as heating material, under the premise of realizing the phase modulation, the working speed of the heating efficiency is improved and the device greatly.