研究目的
To design, simulate, and analyze single-mode electro-optic modulators in x-cut lithium niobate thin film for high-performance data communication applications.
研究成果
The study successfully designed and analyzed single-mode electro-optic modulators in x-cut lithium niobate thin film, optimizing waveguide dimensions, Y-branch structures, and electrode separation distances. The half-wave voltage-length product was calculated to be 2.2 V·cm, indicating efficient electric-optical modulation. This research contributes to the development of high-performance electro-optic modulation devices for optical communications and interconnects.
研究不足
The study focuses on simulation and analysis without experimental validation. Future studies could explore the mismatch refractive index between optical and RF signals by further optimizing structural parameters.
1：Experimental Design and Method Selection:
The study used the full-vectorial finite-difference method to calculate single-mode conditions, optical field, and propagation losses. The 2.5-dimensional variational finite-difference time-domain (varFDTD) method was used for power transmission calculations of Y-branch, and the finite difference beam propagation method was used to simulate the half-wave voltage.
2：5-dimensional variational finite-difference time-domain (varFDTD) method was used for power transmission calculations of Y-branch, and the finite difference beam propagation method was used to simulate the half-wave voltage.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The material was an x-cut LN thin film on a SiO2 cladding layer deposited on a LN substrate.
3：List of Experimental Equipment and Materials:
LN ridge waveguides and electrodes were fabricated, with structures cladded with SiO2 layer.
4：Experimental Procedures and Operational Workflow:
The study involved analyzing single-mode conditions, optimizing Y-branch structures and separation distances between electrodes and waveguides, and simulating the half-wave voltage.
5：Data Analysis Methods:
The study analyzed modal curves, power transmission, propagation losses, and half-wave voltage to optimize the electro-optic modulator design.
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