Reflection type integrated optical resonance structure based on high-order mode

The invention discloses a reflection type integrated optical resonance structure based on a high-order mode. The reflection type integrated optical resonance structure comprises a first single-mode optical waveguide, a multi-mode optical waveguide, a first mode coupler, at least one optical phase shifter and a multi-mode conversion optical reflection module, two single-mode ports of the first mode coupler are respectively connected with the first single-mode optical waveguide; a multimode port of the first mode coupler is connected with the optical phase shifter through the multimode optical waveguide; or the multi-mode port of the first mode coupler is connected with the optical phase shifter and the multi-mode conversion light reflection module through the multi-mode optical waveguide; the multi-mode conversion light reflection module is used for changing a mode channel of incident light in the multi-mode optical waveguide, so that the light is reversely propagated through the other mode channel. The wavegu