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基于超短光脉冲在单模光纤中传输时高阶非线性效应的影响。应用非线性薛定谔方程(HONLS)理论,考虑光纤色散三阶效应,推导出无啁啾的高斯脉冲沿光纤传输时脉冲变化的表达式,并对理论结果进行了数值模拟与分析。结果表明,三阶色散会引起光脉冲形状发生畸变,会在其前沿或后沿附近形成非对称的振荡结构。
Influence of High Order Nonlinearity Effects on Transmission of Ultrashort Optical Pulses in Single Mode. Nonlinear Schrödinger equation (HONLS) theory is adopted, and the third order dispersion of fiber dispersion is considered. The expression of chirp-free Gaussian pulse propagation along optical fiber is deduced. The theoretical results are numerically simulated and analyzed. The results show that the third-order dispersion will cause the shape of the optical pulse to be distorted and form an asymmetric oscillation structure near the front or back edge.