高功率啁啾高斯脉冲在光纤中传输的形变研究

J4 ›› 2011, Vol. 28 ›› Issue (3): 357-361.

高功率啁啾高斯脉冲在光纤中传输的形变研究

浮怀铎许立新王安廷

中国科学技术大学光学与光学工程系, 安徽省光电子科学与技术重点实验室安徽合肥 230026

出版日期:2011-05-28 发布日期:2011-05-20
通讯作者: 许立新 (1966-) 副教授，主要从事新型光纤器件及光纤非线性方面的研究。 E-mail:xulixin@ustc.edu.cn
作者简介: 浮怀铎 (1984-)，研究生，主要从事高功率脉冲在光纤中传输方面的研究。E-mail: fhd@mail.ustc.edu.cn
基金资助:
NSAF联合基金（10876038）

Distortion of high-power chirped Gaussian pulse in single-mode fiber

FU Huai-duo, XU Li-xin，WANG An-ting

Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China

Published:2011-05-28 Online:2011-05-20

摘要/Abstract

摘要：

从光纤广义非线性薛定谔方程出发，定义了用于衡量脉冲形变大小的脉冲形变因子，定量地分析了在传输过程中脉冲形变因子、临界长度、临界功率及初始啁啾之间的关系。结果表明:在传输过程中,当入射脉冲的峰值功率一定时，正啁啾脉冲的形变比负啁啾脉冲和无啁啾脉冲的形变小；当脉冲的初始啁啾一定时，脉冲传输的临界长度随着传输功率的增加而降低，且随着功率的增大，不同初始啁啾脉冲的临界长度趋于一致；在传输距离一定时，临界功率与初始啁啾呈线性变化，且啁啾的漂移对正啁啾脉冲的临界功率影响较大。

关键词: 非线性光学, 脉冲形变因子, 脉冲展宽因子, 啁啾高斯脉冲

Abstract:

Based on nonlinear Schrödinger equation in optical fiber, the factor of distortion of pulse (DIS) is defined to evaluate the distortion of the pulse. The relation among the DIS, critical length of propagation, critical power and initial chirp of the pulse are numerically simulated and analyzed when only dispersion and self-phased modulation is considered. The results show that the distortion of positive chirped pulse is less than that of negative chirped pulse for the given peak power. For the given initial chirp, the critical length of the pulse decreases with the increasing of the peak power of the input pulse, and the critical length of different initial chirp pulses coincides along with increasing of the peak power of the input pulse. When the length of propagation is fixed, critical power is linear with initial chirp, meanwhile the fluctuation of the chirp have more effect on the positive chirped pulse.

Key words: nonlinear optics, factor of distortion, broadening factor, chirped Gauss pulse

中图分类号:

TN253

浮怀铎许立新王安廷. 高功率啁啾高斯脉冲在光纤中传输的形变研究[J]. J4, 2011, 28(3): 357-361.

FU Huai-duo, XU Li-xin，WANG An-ting. Distortion of high-power chirped Gaussian pulse in single-mode fiber[J]. J4, 2011, 28(3): 357-361.

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