Generation of Flat Supercontinuum in a Single-mode Optical Fiber with a Convex Chromatic Dispersion Profile  

作　　者：XU Yong-zhao WANG Hong-chen ZHOU Shou-li 

机构地区：[1]Department of Electronic Engineering, Dongguan University of Technology, Dongguan 523808, CHN [2]College of Information Engineering, Zhejiang University of Technology, Hangzhou 310014, CHN

出　　处：《Semiconductor Photonics and Technology》2009年第1期45-49,68,共6页半导体光子学与技术（英文版）

基　　金：National Basic Research Program of China(2003CB314906)

摘　　要：A single-mode optical fiber with a convex chromatic dispersion profile is proposed for generating a flat supercontinuum(SC).The fiber has normal dispersion and the dispersion parameter D(λ,z) is a convex function of wavelengths.It is shown from the numerical results that the chromatic dispersion,the flatness of the dispersion curve and the pump conditions have significant effect on SC generation.A flat and broad SC without strong residual pump component can be obtained when the pump wavelength is set in the vicinity of the wavelength at which the fiber has small normal group-velocity dispersion(GVD) and small dispersion slope.The fiber with a smaller normal GVD,a flatter dispersion profile and a higher nonlinear coefficient are more suitable for broad SC generation.A single-mode optical fiber with a convex chromatic dispersion profile is proposed for generating a flat supercontinuum（SC）. The fiber has normal dispersion and the dispersion parameter D（λ,z） is a convex function of wavelengths. It is shown from the numerical results that the chromatic dispersion, the flatness of the dispersion curve and the pump conditions have significant effect on SC generation. A flat and broad SC without strong residual pump component can be obtained when the pump wavelength is set in the vicinity of the wavelength at which the fiber has small normal group-velocity dispersion（GVD） and small dispersion slope. The fiber with a smaller normal GVD, a flatter dispersion profile and a higher nonlinear coefficient are more suitable for broad SC generation.

关 键 词：SUPERCONTINUUM DISPERSION optical fiber 

分 类 号：TN713[电子电信—电路与系统] TN253