光子晶体光纤中反常色散区超连续谱产生的机理研究  

Reasearch on the mechanism of supercontinuum generation in photonic crystal fibers' anomalous despersion region

作　　者：刘卫华[1] 陈西曲[1] 

机构地区：[1]武汉工业学院数理科学系,湖北武汉430023

出　　处：《武汉工业学院学报》2009年第4期134-137,共4页Journal of Wuhan Polytechnic University

摘　　要：对光子晶体光纤中超连续谱产生的机理作了初步探讨,认为超连续谱产生的主要原因是高阶孤子的分裂和四波混频效应,自相位调制并不是形成超连续谱的主要原因,当泵浦波长位于光纤反常色散区时可以直接形成高阶孤子,这些孤子随后分裂成基孤子辐射和对应的非孤子辐射,然后发生四波混频效应,使能量不断向其它频谱分量上转移,最后形成了很宽的超连续谱。In this paper, the mechanism of supercontinuum generation in photonie crystal fibers was briefly discussed. The main reasons of supercontinuum generation are fission of higher-order solitons and parametric fourwave mixing, the self phase modulation not main factor of supercontinuum generation. When center wavelength in the anomalous despersion region of fibers, the pluses can form high-order solitons directly, these solitons will fission some base-order solitons radiation and corresponding non-solitons radiation and then four-wave mixing appears, it will transfer energy to other frequency continually, and form a very broaden snectral at last.

关 键 词：超连续谱 光子晶体光纤 自相位调制 

分 类 号：O561.3[理学—原子与分子物理]