基于非线性光纤环镜的全光波长变换器性能分析

Numerical simulation of all-optical wavelength conversion device based on nonlinear optical loop mirror

非线性光纤环镜是一种很有前途的全光波长变换装置。介绍了利用光束传输法（ＢＰＭ） 对耦合非线性薛定谔方程组进行数值解析，详细讨论了对变换信号质量起作用的因素，包括泵浦光脉冲与信号光脉冲之间的走离和初始时延、光纤长度、向长波长变换和向短波长变换等。结果表明，适当的初始时延可以补偿走离的影响，适当增加光纤长度可以改善脉冲波形。

All-optical wavelength conversion based on a nonlinear optical loop mirror (NOLM) is a promising method. This paper gives a mathematical description of the NOLM utilizing nonlinear Schrodinger equations. The output intensity is calculated in terms of different exemplary parameters of walk-off value, initial time delay, fiber length and dispersion parameter.