摘要
基于广义非线性薛定谔方程,数值模拟了具有3个零色散波长的光子晶体光纤中孤子的演化过程及其时频特性。结果表明,由于第2个反常色散区的存在,不仅在正常色散区得到了相位匹配的蓝移和红移色散波,还在低频反常色散区得到了高强度的色散波孤子,而且此孤子在高频正常色散区进一步辐射出了蓝移色散波。
Based on the generalized nonlinear Schrdinger equation,the spectral evolution and the time-frequency characteristics of the soliton in photonic crystal fiber with three zero-dispersion wavelengths are numerically simulated.The results show that not only both blue-and red-shifted dispersive waves are generated in the two normal dispersion regions of the photonic crystal fiber,which is in good agreement with the phase-matching condition,but also high-intensity dispersive wave-soliton is generated in the low-frequency anomalous dispersion region due to the existence of the second anomalous dispersion region.Furthermore,it is found that in high-frequency normal dispersion region the blue-shifed dispersive wave is emitted by the dispersion wave-soliton.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2011年第10期75-79,共5页
Acta Optica Sinica
基金
国家自然科学基金(60890202)
国家自然科学基金中俄合作项目(61011120106)资助课题
关键词
光纤光学
相位匹配
高阶色散
光子晶体光纤
fiber optics
phase matching
higher-order dispersion
photonic crystal fiber（PCF）
