研究目的
Investigating the complex temporal and spectral evolutions of the supercontinuum generation in two-stage cascaded photonic crystal fiber tapers and the influence of pump peak power on the nonlinear dynamics.
研究成果
The research demonstrates the complex temporal and spectral evolutions of supercontinuum generation in two-stage cascaded photonic crystal fiber tapers and highlights the influence of pump peak power on nonlinear dynamics. The findings have potential applications in nonlinear photonics and spectroscopy.
研究不足
The study is based on numerical simulations, and actual experimental conditions may introduce variables not accounted for in the model. The influence of environmental factors on the fiber's performance is not considered.
1：Experimental Design and Method Selection:
The study uses numerical simulation to investigate the nonlinear evolution of supercontinuum generation in cascaded photonic crystal fiber tapers. The generalized nonlinear Schr?dinger equation (GNLSE) is employed to model the propagation of optical fields inside the fiber.
2：Sample Selection and Data Sources:
The material of the designed PCF tapers is silica, with specific structural parameters including the core diameter and the diameter of air holes.
3：List of Experimental Equipment and Materials:
The study involves photonic crystal fiber tapers with varying core diameters and air hole diameters.
4：Experimental Procedures and Operational Workflow:
The fourth-order Runge-Kutta method is used to solve the GNLSE, simulating the temporal and spectral profiles of the pump pulse propagated inside the cascaded PCF tapers.
5：Data Analysis Methods:
The analysis focuses on the temporal and spectral evolutions of the supercontinuum generation under different pump peak powers.
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