光孤子在分布式光纤放大器中传输特性的研究

J4 ›› 2010, Vol. 27 ›› Issue (6): 754-758.

• 纤维与波导光学 • 上一篇

光孤子在分布式光纤放大器中传输特性的研究

周小红高晓蓉王黎王泽勇罗斌

1 西南交通大学物理科学与技术学院, 四川成都 610031;
2 西南交通大学信息科学与技术学院, 四川成都 610031

收稿日期:2009-12-07 修回日期:2010-01-08 出版日期:2010-11-28 发布日期:2010-11-19

Propagation properties of optical soliton in distributed fiber amplifier

ZHOU Xiao-hong¹, GAO Xiao-rong¹, WANG Li¹, WANG Ze-yong¹, LUO Bin²

1 College of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031,China;
2 College of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031,China

Received:2009-12-07 Revised:2010-01-08 Published:2010-11-28 Online:2010-11-19

摘要/Abstract

摘要：

光纤放大器用于补偿光信号在光纤中的传输损耗，是全光通信网中的核心器件。建立了光孤子在分布式光纤放大器中传输的物理模型，采用分步傅里叶变换法数值模拟了光孤子的传输放大特性，讨论了增益色散对光孤子形状和频谱的影响。结果表明：在放大器的反常色散区，随着光孤子的放大，会不断地产生啁啾孤子，孤子频谱会加宽并且产生振荡结构。放大介质的增益色散将会使光孤子幅度下降，宽度展宽，频谱窄化。因此，光纤放大器的色散、非线性效应和增益色散均会对光孤子的传输特性产生影响。

关键词: 光通信, 传输特性, 分步傅里叶变换法, 光孤子, 分布式光纤放大器

Abstract:

Fiber amplifier is used to compensate for the transmission loss of optical signals in the fiber. It is key device in all-optical communication network. The physical model for propagation of optical soliton in the distributed fiber amplifier is established. The properties of propagation and amplification for optical soliton were simulated numerically using split-step Fourier transform method. The influence of gain dispersion on the profile and power spectrum of optical soliton was discussed finally. The results show that the chirped soliton will be produced continuously with the amplification of optical soliton in the anomalous dispersion regime of amplifier. The power spectrum of soliton is widened and the oscillation structure is produced. The gain dispersion of amplification medium leads to optical soliton amplitude decreasing, width broadening and power spectrum narrowing. So the dispersion, nonlinear effect and gain dispersion of fiber amplifier all have an effect on the propagation property of optical soliton.

Key words: optical communication, propagation property, split-step Fourier transform method, optical soliton, distributed fiber amplifier

中图分类号:

TN248.1

周小红高晓蓉王黎王泽勇罗斌. 光孤子在分布式光纤放大器中传输特性的研究[J]. J4, 2010, 27(6): 754-758.

ZHOU Xiao-hong, GAO Xiao-rong, WANG Li, WANG Ze-yong, LUO Bin. Propagation properties of optical soliton in distributed fiber amplifier[J]. J4, 2010, 27(6): 754-758.

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光孤子在分布式光纤放大器中传输特性的研究

Propagation properties of optical soliton in distributed fiber amplifier

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