Study of Cross-Phase Modulation in Optical Fibers

这项研究涉及到一个 实验和理论研究 交叉相位调制（XPM）的影响， 光纤以及这种效应如何 用来影响一个人的行为 共同传播的光脉冲 用另一个超短脉冲 项目 分为三个部分。 第一 部分涉及XPM交互 在泵浦脉冲和斯托克斯脉冲之间 这是通过内部产生的， 受激拉曼散射过程。 第二部分与XPM相关 泵和信号之间的相互作用 在光纤上同时发射的脉冲 输入. 泵浦脉冲和信号脉冲是 允许有不同的载体 波长，不同的脉冲宽度，以及 它们之间的相对时间延迟。 的 第三部分是关于XPM的 当泵浦和信号脉冲 具有相同的载波波长，但激发 的正交偏振模式 单模光纤 目标是 研究如何使用XPM交互 改变传播特性 信号脉冲（例如其相位， 频率、形状或频谱）通过 强泵浦脉冲。 这项研究是有益的 对于许多工程应用， 光子交换和高- 加速光通信。

The proposed research is related to an experimental and theoretical study of the effects of cross-phase modulation (XPM) in optical fibers and how such effects can be used for influencing the behavior of one optical pulse by copropagating it together with another ultrashort pulse. The project is divided into three parts. The first part is concerned with the XPM interaction between the pump pulse and the Stokes pulse that is generated internally through the process of stimulated Raman scattering. The second part is related to the XPM interaction between the pump and signal pulses launched simultaneously at the fiber input. The pump and signal pulses are allowed to have different carrier wavelengths, different pulse widths, and a relative time delay between them. The third part is related to the XPM interaction when the pump and signal pulses have the same carrier wavelength but excite the orthogonally polarized modes of a single-mode fiber. The objective is to study how the XPM interaction can be used to modify the propagation characteristics of a signal pulse (such as its phase, frequency, shape, or spectrum) through an intense pump pulse. The study is useful for many engineering applications in the fields of photonic switching and high- speed optical communications.