Effects of Input Spectra on the Threshold of Modulation Instability in a Single-Mode Fiber  

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)

机构地区：[1]Department of Optic Information Science and Technology,College of Optoelectronic Science and Engineering,National University of Defense Technology,Changsha 410073

出　　处：《Chinese Physics Letters》2012年第4期116-118,共3页中国物理快报（英文版）

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.

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.

关 键 词：AMPLIFIER FIBER SPECTRUM 

分 类 号：TN2[电子电信—物理电子学]