研究目的
To design and theoretically demonstrate a hollow core anti-resonance fiber with single polarization single mode guidance using surface plasmon resonance.
研究成果
The designed HC-ARF with two gold wires exhibits effective single polarization single mode guidance in the 1.3 to 1.5μm wavelength range with extinction ratios exceeding 100. Surface plasmon resonance enhances loss for the x-polarized fundamental mode, while maintaining low loss for the y-polarized mode. The structure shows good tolerance to variations in gold wire diameter and position, but fabrication of elliptical tubes is demanding. This approach provides a method for SPSM HC-ARFs applicable in polarization-sensitive devices.
研究不足
The study is theoretical and based on simulations; no experimental validation is provided. Fabrication of the fiber with elliptical tubes and embedded gold wires is challenging and may have practical difficulties. The ellipticity of tubes requires high precision in fabrication.
1：Experimental Design and Method Selection:
The study uses finite element method (FEM) with perfectly matched layer (PML) boundary conditions for simulation. Theoretical models include the Drude-Lorentz model for gold permittivity and Sellmeier equation for silica dispersion.
2：Sample Selection and Data Sources:
The fiber structure is simulated with specific parameters (e.g., core diameter, strut thickness, gold wire diameter). No physical samples are used; all data is from simulations.
3：List of Experimental Equipment and Materials:
Simulation software (not specified) is used. Materials include silica for the fiber and gold for the wires.
4：Experimental Procedures and Operational Workflow:
The simulation involves setting up the fiber geometry, applying FEM with fine meshing (maximum element sizes of λ/4 in air, λ/6 in thin glass, λ/15 in gold), and analyzing losses and extinction ratios for different modes.
5：Data Analysis Methods:
Losses and extinction ratios (HOMER, CMER, PMER) are calculated and plotted against wavelength and structural parameters to evaluate SPSM performance.
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