摘要
We investigate modulation instability (MI) in the presence of a monochromatic spectrum and on the background of a broadband amplified spontaneous emission spectrum induced by an erbium-doped fiber amplifier,respectively.For the former case,the MI threshold is ~110mW,which agrees well with the theoretical value.However,for the latter case,the threshold is as high as ~170mW,which indicates that the MI threshold depends on the shape of the input spectrum and that the broadband spectrum has a higher threshold than the monochromatic one.
作者
CHEN Wei
MENG Zhou
ZHOU Hui-Juan
LUO Hong
陈伟;孟洲;周会娟;罗洪(Department of Optic Information Science and Technology,College of Optoelectronic Science and Engineering,National University of Defense Technology,Changsha 410073)
基金
Supported by the National Natural Science Foundation of China under Grant No 61177073
the Open Fund of Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes,Jinan University under Grant No gdol201101
the Fund of Innovation of Graduate School of NUDT under Grant No B110703
Hunan Provincial Innovation Foundation for Postgraduate under Grant No CX2011B033.
