基于掺镱光纤宽带光源泵浦产生的超连续谱研究

项目名称： 基于掺镱光纤宽带光源泵浦产生的超连续谱研究

项目编号： No.61308048

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 王秀琳

作者单位： 集美大学

项目金额： 25万元

中文摘要： 以光纤中非线性效应为载体的宽带超连续谱(SC)已成为非线性光纤光学和激光光谱学中热门的研究领域之一，通过该项目研究将掺镱光纤中产生的高功率低相干宽带光源和连续波泵浦下光纤中的非线性效应有效结合，探讨利用随机相位低相干光源泵浦非线性光子晶体光纤来产生高质量宽带超连续谱的新技术和理论；以光纤中光传输的广义非线性薛定谔方程为基础，运用唯象方法考虑入射泵浦光的时间相干性和随机相位特性，研究随机相位低相干光泵浦下调制不稳定性、拉曼孤子等非线性光学效应对SC 谱特性影响的物理机理，进行计算机数值模拟；研究获得高功率低相干泵浦光源所需的低噪声、高增益双包层掺镱光纤放大器，从实验上研究不同的SC 腔下泵浦光时间相干性、偏振稳定性等因素对产生超连续谱光源的光谱平坦光滑性、光谱展宽、相对强度噪声和转换效率等特性的影响，为新型高质量全光纤超连续谱产生技术提供新颖可行的思路和方案。

中文关键词： 超连续谱；高非线性光子晶体光纤；调制不稳定性；掺镱光纤宽带光源；

英文摘要： The broadband supercontinuum (SC) based on the nonlinear optical effect in fiber has become a hot research field of nonlinear fiber optics and laser spectroscopy. In this research project, by the effective combination of high power low-coherent Yb-doped fiber broadband source and nonlinear optical effect in fiber under cw-pump, we will study a new technology and theory of producing high quality SC in a nonlinear photonic crystal fiber pumped by random phase low-coherent light source. Based on the generalized nonlinear schrodinger equation which described the transmission of light in fiber, and use the phenomenological method considering the temporal coherence and random phase characteristic of incident pump light, we will research the influence of the Modulation Instability under the random phase low-coherent pump light, Raman soliton and other nonlinear optical effects on the characteristics of SC by numerical simulation. We will also study the low noise and high gain double cladding Yb-doped fiber amplifier, which is needed for obtaining the high power low-coherent pump light. Finally, the effect of temporal coherence, polarization stability etc. factors of the pump with different SC cavity on the SC characteristics such as spectral flatness smoothness, spectral broadening, the relative intensity noise and pum

英文关键词： Supercontinuum (SC)；Highly Nonlinear Photonics Crystal Fiber (HNL-PCF)；Modulation Instability (MI)；Yb-doped Fiber Broadband Source；