研究目的
To present a new scheme for Mach-Zehnder Interferometer (MZI) structure based on only one 4×4 multimode interference (MMI) coupler on the silicon on insulator (SOI) platform, aiming for compact size and ease of fabrication with current CMOS circuitry.
研究成果
The new compact MZI cell based on a 4×4 MMI coupler on an SOI platform offers advantages of compact size and ease of fabrication with current CMOS circuitry. The device operation has been verified through FDTD simulations, showing good agreement with analytical predictions. This MZI cell can serve as a basic building block for complex mesh designs in photonic applications.
研究不足
The study is based on numerical simulations, and the practical fabrication and testing of the proposed MZI cell are not covered. The sensitivity of directional couplers to fabrication errors is noted as a limitation.
1：Experimental Design and Method Selection:
The study involves designing a new MZI cell based on a 4×4 MMI coupler on an SOI platform, comparing it with MZI cells based on directional couplers and 2×2 MMI couplers. The numerical simulations are conducted using the finite difference time difference (FDTD) method and the three-dimensional beam propagation method (3D-BPM).
2：Sample Selection and Data Sources:
The research utilizes silicon waveguides on an SOI platform for the design and simulation of the MZI cells.
3：List of Experimental Equipment and Materials:
The study involves simulations rather than physical experiments, focusing on the design parameters of the MZI cells.
4：Experimental Procedures and Operational Workflow:
The workflow includes the design of the MZI cells, optimization of the MMI sections, and numerical simulations to verify the device operation.
5：Data Analysis Methods:
The performance of the MZI cells is analyzed through numerical simulations, focusing on the compact size and fabrication tolerance.
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