论文部分内容阅读
提出了一种基于分步傅里叶方法的二次采样法,用以模拟和分析亚纳秒脉冲泵浦光子晶体光纤产生的超连续谱特性。通过此方法在广义非线性薛定谔方程上的应用,在超连续谱模拟中显著缩短了运算时间,模拟结果与实验符合很好。同时还对模拟光谱与实验结果间的细微差别做了讨论。通过此方法,模拟了1.8m晶体光纤中产生的1.15 W续谱和光谱沿光纤长度的演化,为超连续谱实验研究的优化设计提供了依据。
A subsampling method based on fractional Fourier method was proposed to simulate and analyze the supercontinuum characteristics of sub-nanosecond pulsed photonic crystal fiber. By applying this method to the generalized nonlinear Schrödinger equation, the computational time is significantly shortened in the supercontinuum simulation. The simulation results are in good agreement with the experimental results. The nuances of the simulated spectra and experimental results are also discussed. By this method, the 1.15 W continuum and the evolution of the spectrum along the length of the fiber in a 1.8 m crystal fiber are simulated, which provides the basis for the optimal design of the experimental study of the supercontinuum.