Phase control waveguide structure based on anisotropic material and wavelength division multiplexer structure thereof
AssigneesJiaxing Research Institute, Zhejiang University, Zhejiang University
InventorsLiu Liu, Junjie Yi, Xiaowei Guan, Zhaoyang Chen, Guowu Zhang
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Abstract
A phase control waveguide structure based on an anisotropic material and a wavelength division multiplexer structure thereof are provided. A phase control waveguide, as part of a wavelength division multiplexer, is symmetrically designed along a special angle. Based on this method, an arrayed waveguide grating for implementing a wavelength division multiplexer on the anisotropic material, and a cascaded Mach-Zehnder interferometer structure are further provided.
Claims12
A phase control waveguide structure based on an anisotropic material, wherein the phase control waveguide structure comprises two-side waveguide units that are symmetrically arranged, the waveguide unit comprises a straight waveguide and a bent waveguide that are connected, the phase control waveguide structure comprises a straight waveguide A, a bent waveguide A, a bent waveguide B, and a straight waveguide B that are sequentially connected, and the straight waveguide A, the bent waveguide A, the bent waveguide B, and the straight waveguide B are symmetrically arranged along an axis that forms an included angle of 45° or 135° with both crystal axes of a surface of the anisotropic material.
A wavelength division multiplexer structure based on an arrayed waveguide grating, based on an anisotropic material and comprising a phase control waveguide structure, wherein the structure comprises an input waveguide, an input end free propagation region, an input end tapered waveguide, an arrayed waveguide, an output end tapered waveguide, an output end free propagation region, and an output waveguide that are sequentially connected.
A wavelength division multiplexer structure based on a cascaded Mach-Zehnder interferometer, based on an anisotropic material and comprising a phase control waveguide structure, wherein the structure is a binary tree structure comprising single-level MZI units connected by a 3 dB directional coupler, the single-level MZI unit comprises an upper arm and a lower arm of the phase control waveguide structure, and the upper arm and the lower arm are symmetrically arranged about an axis that forms an included angle of 45° or 135° with both crystal axes of a surface of the anisotropic material.
Dependencies are inferred from the claim text.