Experimental studies of noise-like pulses in a dispersion-managed fiber laser  

作　　者：雷大军 杨华 董辉 文双春 徐慧文 张景贵 

机构地区：[1]Key Laboratory for Micro/Nano Optoelectronic Devices,School of Computer and Communication,Hunan University,Changsha 410082,China [2]Department of Physics and Electronic Information Engineering,Xiangnan University,Chenzhou 423000,China

出　　处：《中国激光》2009年第3期630-634,共5页Chinese Journal of Lasers

基　　金：supported by the National Natural Science Foundation of China(60538010);the Project Supported by Scientific Research Fund of Hunan Provincial Education Department(08B073)

摘　　要：Based on an erbium.doped dispersion-managed fiber laser,the characteristics of noise-like pulses under different net cavity group velocity dispersions (GVDs) are experimentally investigated.Results show that the spec-tral bandwidth of noise-like pulse will increase as the net cavity GVD increases and attains maximum when the GVD is slightly positive.The effect of Raman scattering is enhanced due to the temporal width attains minimum.When the net cavity GVD increases continually and further into the positive region, the spectral width begins to decrease and the effect of Raman scattering is suppressed due to the positive dispersion.Our experimental results are in good agreement with the previous prediction of numerical simulation.Based on an erbium-doped dispersion-managed fiber laser, the characteristics of noise-like pulses under different net cavity group velocity dispersions (GVDs) are experimentally investigated. Results show that the spectral bandwidth of noise-like pulse will increase as the net cavity GVD increases and attains maximum when the GVD is slightly positive. The effect of Raman scattering is enhanced due to the temporal width attains minimum. When the net cavity GVD increases continually and further into the positive region, the spectral width begins to decrease and the effect of Raman scattering is suppressed due to the positive dispersion. Our experimental results are in good agreement with the previous prediction of numerical simulation.

关 键 词：FIBER OPTICS noise-like pulse BROADBAND SPECTRUM FIBER laser 

分 类 号：TN253[电子电信—物理电子学]