Modified Raman Response Model and Supercontinuum Generation in Flat Dispersion Photonic Crystal Fiber with Two-Zero Dispersion Wavelengths  

作　　者：WANG He-Lin YANG Ai-Jun LENG Yu-Xin WANG Cheng 王河林;杨爱军;冷雨欣;王乘(College of Science,Zhejiang University of Technology,Hangzhou 310023;State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800)

机构地区：[1]College of Science,Zhejiang University of Technology,Hangzhou 310023 [2]State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800

出　　处：《Chinese Physics Letters》2011年第3期93-96,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2006CB806001;the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KGCX-YW-417-2;Shanghai Commission of Science and Technology under Grant No 07JC14055.

摘　　要：The generation mechanisms of supercontinuum(SC)and the effect of the modified Raman model on SC are further analyzed in a flat dispersion photonic crystal fiber(PCF)with two-zero dispersion wavelengths(TZDWs)by introducing an accurate Raman response function in the scalar nonlinear Scho?dinger equation.The results show that the introduction of Boson peak in the modified Raman gain model not only results in much rapider broadening of SC but also promotes more pump pulse energy transferred to the short wavelength region,which is related to stimulated Raman scattering.Moreover,SC generated from the PCF splits into two spectral bands,and their spectral peaks rapidly separate and broaden with the increase of incidcnt power.Double-band central wavelengths are finally located at about 850 nm and 1220 nm.The pumping energy depletion phenomenon occurs.The simulated results from the modified Raman model are in better agreement with the experimental results than that from the single-Lorentzian moder.

关 键 词：PUMPING PUMP DISPERSION 

分 类 号：TN2[电子电信—物理电子学]