The invention discloses a planar
waveguide type near-and-
mid infrared light modulator based on
graphene-
chalcogenide glass, and belongs to the technical field of electro-optical modulators. The
optical modulator solves the problems in modulation and
demodulation of integrated photonic devices based on optical signals of near-and-
mid infrared light
ranging from 1.55 microns to 3 microns. The modulator comprises a substrate layer,
ridge-shaped light
waveguide layers, a first strut and a second strut, wherein the
ridge-shaped light
waveguide layers, the first strut and the second strut are arranged on the substrate layer; a first
graphene layer and a second
graphene layer are arranged on the
ridge-shaped light waveguide
layers; the first graphene layer extends to the upper surface of the first strut, and the second graphene layer extends to the upper surface of the second strut; isolation medium layers are arranged between the ridge-shaped optical waveguide layer and the first graphene layer, between the ridge-shaped optical waveguide layer and the second graphene layer, between the first graphene layer and the second graphene layer, between the first graphene layer and the first strut, and between the second graphene layer and the second strut respectively; a first
electrode is arranged on the first graphene layer on the first strut, and a second
electrode is arranged on the second graphene layer on the second strut. The modulator is used for
signal modulation and
demodulation in the integrated photonic devices.