▎ 摘　　要

NOVELTY - The modulator has a graphite alkene modulation area (4) formed with a graphene layer and a medium layer, where the medium layer is made of aluminum oxide, silicon oxide, silicon nitrogen oxide and boron nitride. A strip waveguide is fixed to an integrated input end mode converter (2), a strip-shaped straight waveguide (5) and an output end mode converter (6). The input end mode converter and the output end mode converter are symmetrically connected together. The input end mode converter and the output end mode converter realize conversion between a low-order mode and a high-order mode. The strip-shaped straight waveguide transmits low and high order-modes. A main body comprises a first electrode (3) and a second electrode that are made of palladium, gold, silver, platinum and copper, and a substrate (1) that is made of silicon dioxide. USE - Mode conversion based graphene polarization-independent optical modulator. ADVANTAGE - The modulator can realize normal modulation, and utilizes the input end mode converter that converts TM0 mode into TE1 mode to modulate intensity patterns with same effect in a modulation region when incident light is the TM0 mode, thus realizing graphene polarization independent optical modulation with better compatibility of CMOS technology. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a mode conversion based graphene polarization-independent optical modulator. Substrate (1) Integrated input end mode converter (2) Electrode (3) Graphite alkene modulation area (4) Strip-shaped straight waveguide (5) Output end mode converter (6)