研究目的
Investigating the properties of metallic-photonic-crystal point-defect-cavities with a centrally-loaded rod, including resonant frequencies and Q-factors, through theoretical and experimental methods.
研究成果
The study validates the effectiveness of the proposed PDCs with adjustable resonant frequencies through good agreement between simulated and measured results. The resonant frequency of the PDC can be easily controlled by adjusting the radius of the rod in the center.
研究不足
The influence of very small gaps/steps in the connecting part between the embedded central-rod and the bottom plate of the cavity may affect the Q-factor more significantly as the resonant frequency and Q-factor increase with the radius of the centrally-loaded-rod.
1：Experimental Design and Method Selection:
The study involves the computation of resonant frequencies and Q-factors of PDCs using FDTD method and super-cell method with periodic boundary conditions.
2：Sample Selection and Data Sources:
PDCs are fabricated based on the theoretical model with specific dimensions (a = 10 mm, r = 2 mm).
3：List of Experimental Equipment and Materials:
Metallic rods, network analyzer, electrical field probes.
4：Experimental Procedures and Operational Workflow:
Measurement of transmission characteristics using two electrical field probes connected to a network analyzer.
5：Data Analysis Methods:
Comparison of simulated and measured results to validate the effectiveness of the proposed PDCs.
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