Numerical study on pulse trapping in birefringent photonic crystal fibers  

作　　者：姚艳艳 李曙光 付博 张磊 张美艳 

机构地区：[1]Key Laboratory on Metastable Material Science and Technology,College of Science,Yanshan University

出　　处：《Optoelectronics Letters》2011年第3期205-208,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.10874145);the Natural Science Foundation of Hebei Province of China (No.F2009000481);the China Postdoctoral Science Foundation (No.20080440014)

摘　　要：Using an adaptive split-step Fourier method,the coupled nonlinear Schrdinger equations have been numerically solved in this paper.The nonlinear propagation of an ultrashort optical pulse in the birefringent photonic crystal fibers is investigated numerically.It is found that the phenomenon of pulse trapping occurs when the incident pulse is deviating from the principal axis of the fiber with some angle.Owing to the birefringence effect,the incident pulse can be regarded as two orthogonal polarized pulses.The phenomenon of pulse trapping occurs because of the cross phase modulation(XPM) between the two components.As a result,the bandwidth of the supercontinuum(SC) decreases compared with the case that the incident pulse is input along the principal axis.When the polarization direction of the incident pulse is parallel to the fast axis,the bandwidth of the supercontinuum is maximal.

关 键 词：BANDWIDTH BIREFRINGENCE Crystal whiskers Numerical methods Phase modulation Photonic crystals 

分 类 号：TN253[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]