Effect of Initial Frequency Chirp on Pulse Compression of Higher-order Solitons in Cascaded Single-mode Fibers

XU Yong-zhao; ZHANG Geng; YE Hai; LIU Min-xia

doi:10.3788/fgxb20163711.1360

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Effect of Initial Frequency Chirp on Pulse Compression of Higher-order Solitons in Cascaded Single-mode Fibers

更新时间：2020-08-12

- Effect of Initial Frequency Chirp on Pulse Compression of Higher-order Solitons in Cascaded Single-mode Fibers
- Chinese Journal of Luminescence Vol. 37, Issue 11, Pages: 1360-1366(2016)
- 作者机构：
  
  东莞理工学院电子工程学院, 广东东莞 523808
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20163711.1360
  CLC： TN929.11
- Received：07 May 2016，
  
  Revised：20 June 2016，
  
  Published：05 November 2016
- 稿件说明：
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徐永钊, 张耿, 叶海等. 级联单模光纤中初始啁啾对高阶孤子脉冲压缩的影响[J]. 发光学报, 2016,37(11): 1360-1366

XU Yong-zhao, ZHANG Geng, YE Hai etc. Effect of Initial Frequency Chirp on Pulse Compression of Higher-order Solitons in Cascaded Single-mode Fibers[J]. Chinese Journal of Luminescence, 2016,37(11): 1360-1366
徐永钊, 张耿, 叶海等. 级联单模光纤中初始啁啾对高阶孤子脉冲压缩的影响[J]. 发光学报, 2016,37(11): 1360-1366 DOI： 10.3788/fgxb20163711.1360.

XU Yong-zhao, ZHANG Geng, YE Hai etc. Effect of Initial Frequency Chirp on Pulse Compression of Higher-order Solitons in Cascaded Single-mode Fibers[J]. Chinese Journal of Luminescence, 2016,37(11): 1360-1366 DOI： 10.3788/fgxb20163711.1360.

摘要

采用两段级联单模光纤对高阶孤子脉冲进行压缩。两段光纤具有不同的反常色散值，当高阶孤子脉冲在第一段光纤中获得最大程度压缩时，通过转换色散值不同的光纤，使压缩脉冲继续以高阶孤子的形式在第二段光纤中再次被压缩。每段光纤的长度都进行了优化，使得脉冲在每段光纤中都获得最大程度的压缩。基于非线性薛定谔方程，数值研究了初始啁啾对高阶孤子脉冲压缩的影响。研究结果表明，初始啁啾对高阶孤子脉冲的压缩有重要影响。与无初始啁啾时的情形相比，正的初始啁啾能增强每段光纤中脉冲的压缩效果，降低压缩脉冲的基座能量，而负初始啁啾的影响则相反。随着初始啁啾参量

的增大，脉冲在每段光纤中的压缩因子均增加，而基座能量、最优光纤长度均减小。

Abstract

We consider the pulse compression of higher-order solitons in two cascaded single-mode fibers. The two single-mode fibers have different anomalous dispersion value. When the higher-order soliton pulse achieves maximal compression in the first fiber

by switching the fiber with different dispersion

the pulse is compressed again as a new higher-order soliton in the second fiber. Each fiber length is optimized in order to achieve maximal compression inside each fiber segment. Based on the generalized nonlinear Schrdinger equation

we numerically study the effect of initial frequency chirp on pulse compression of higher-order solitons. Our numerical results show that initial frequency chirp has significant influence on higher-order solitons pulse compression. In comparison with the case of without initial chirp

a positive chirp can enhance the pulse compression and can reduce the pedestal energy in each fiber segment

while a negative chirp does the opposite. In each fiber segment

as the chirp parameter

increases

the compression factor increases

while pedestal energy and optimal fiber length decrease.

关键词

Keywords

references

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