准连续光抽运光子晶体光纤产生超连续谱中的调制不稳定性(英文)  

Modulation Instability in Supercontinuum Generation Using the Photonic Crystal Fiber Pumped by Quasi-Continuum Wave

作　　者：张挺[1,2] 赵卫[1] 杨直[1] 王屹山[1] 方平[1,2] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,西安710119 [2]中国科学院研究生院,北京100049

出　　处：《光子学报》2010年第4期639-642,共4页Acta Photonica Sinica

基　　金：Supported by the National Natural Science Foundation ofChina(60537060)

摘　　要：报道了应用准连续光抽运光子晶体光纤产生超连续谱时的一种现象,并根据调制不稳定和数值解薛定谔方程证明此现象为调制不稳定性.在实验中发现有两个波峰,与中心波长之间的距离分别为27 .08 nm和32 .72 nm,经过对比和分析数值结算和实验结果非常吻合,说明调制不稳定性在准连续光抽运光子晶体光纤产生超连续谱过程中起着重要的作用.A phenomenon experimentally emerging in super-continuum generation with a piece of photonic crystal fiber pumped by quasi-continuum wave is reported. According tO the numerical simulation which contains using the gain spectrum theory of modulation instability and solving nonlinear Schrodinger equation, it is proved that this phenomenon is generated by modulation instability. After the results of the simulation and the experiment being contrasted and analyzed, it is found that the simulation result including two mentioned methods is in excellent agreement with the experiment result which the wavelength difference between the two spectrum lobes and the central wavelength are 27.08 nm and 32.72 nm respectively.

关 键 词：超连续谱的产生 广义的非线性薛定谔方程 调制不稳定性 准连续光 

分 类 号：TN253[电子电信—物理电子学]