＂昆＂,是中国＂百家姓＂之一＂姓＂。看到＂昆体良＂这一人名,绝大多数的中国教育工作者,会一头雾水：有这么个人？什么朝代的？——这真难怪读者!因着表达的需要,在我某一本专著的＂前言＂,我曾这样写：昆体良不是今人,也不是中国人,...＂昆＂,是中国＂百家姓＂之一＂姓＂。看到＂昆体良＂这一人名,绝大多数的中国教育工作者,会一头雾水：有这么个人？什么朝代的？——这真难怪读者!因着表达的需要,在我某一本专著的＂前言＂,我曾这样写：昆体良不是今人,也不是中国人,而是公元1世纪罗马最有成就的教育家,全名为马库斯·法比尤斯·昆体良（Marcus Fabius Quint ilianus）,古代希腊、展开更多
The approximate analytical frequency chirps and the critical distances for cross-phase modulation induced optical wave breaking(OWB) of the initial hyperbolic-secant optical pulses propagating in optical fibers with q...The approximate analytical frequency chirps and the critical distances for cross-phase modulation induced optical wave breaking(OWB) of the initial hyperbolic-secant optical pulses propagating in optical fibers with quintic nonlinearity(QN) are presented. The pulse evolutions in terms of the frequency chirps, shapes and spectra are numerically calculated in the normal dispersion regime. The results reveal that, depending on different QN parameters, the traditional OWB or soliton or soliton pulse trains may occur. The approximate analytical critical distances are found to be in good agreement with the numerical ones only for the traditional OWB whereas the approximate analytical frequency chirps accords well with the numerical ones at the initial evolution stages of the pulses.展开更多
文摘＂昆＂,是中国＂百家姓＂之一＂姓＂。看到＂昆体良＂这一人名,绝大多数的中国教育工作者,会一头雾水：有这么个人？什么朝代的？——这真难怪读者!因着表达的需要,在我某一本专著的＂前言＂,我曾这样写：昆体良不是今人,也不是中国人,而是公元1世纪罗马最有成就的教育家,全名为马库斯·法比尤斯·昆体良（Marcus Fabius Quint ilianus）,古代希腊、
基金Supported by the Postdoctoral Fund of China under Grant No.2011M501402the Key Project of Chinese Ministry of Education under Grant No.210186+2 种基金the Major Project of Natural Science Supported by the Educational Department of Sichuan Province under Grant No.13ZA0081the Key Project of National Natural Science Foundation of China under Grant No 61435010the National Natural Science Foundation of China under Grant No.61275039
文摘The approximate analytical frequency chirps and the critical distances for cross-phase modulation induced optical wave breaking(OWB) of the initial hyperbolic-secant optical pulses propagating in optical fibers with quintic nonlinearity(QN) are presented. The pulse evolutions in terms of the frequency chirps, shapes and spectra are numerically calculated in the normal dispersion regime. The results reveal that, depending on different QN parameters, the traditional OWB or soliton or soliton pulse trains may occur. The approximate analytical critical distances are found to be in good agreement with the numerical ones only for the traditional OWB whereas the approximate analytical frequency chirps accords well with the numerical ones at the initial evolution stages of the pulses.
