研究目的
Investigating the ultra-broadband and low dispersion characteristics of silicon-As2S3 slab/slot waveguides for supercontinuum generation in near-infrared and mid-infrared regions.
研究成果
The proposed silicon-As2S3 slab/slot waveguide exhibits ultra-broadband and low dispersion characteristics with three zero-dispersion wavelengths, enabling supercontinuum generation from 1.7 to 10.6μm. This waveguide holds significant potential for broadband signal processing applications in the near-infrared and mid-infrared regions.
研究不足
The study assumes a constant loss of the waveguide (α=1.5 dB∕cm) and does not extensively explore the impact of varying loss on supercontinuum generation. The practical fabrication challenges of the proposed waveguide are not discussed.
1：Experimental Design and Method Selection:
The study employs a full-vector finite-element method (COMSOL) for dispersion calculation and optimizes structural parameters to achieve desired dispersion characteristics.
2：Sample Selection and Data Sources:
The waveguide's material dispersions are calculated using the Herzberger equation and Sellmeier equation.
3：List of Experimental Equipment and Materials:
Silicon and As2S3 materials are used for the waveguide.
4：Experimental Procedures and Operational Workflow:
The study involves optimizing structural parameters (H1, H2, W0, W1, W2) to tailor dispersion profiles and calculating effective area and nonlinear coefficients.
5：Data Analysis Methods:
The generalized nonlinear Schr?dinger equation (GNLSE) is used to model pulse propagation and supercontinuum generation.
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