色散平坦渐减光纤中非线性啁啾脉冲的传输及超连续谱的产生

徐永钊; 刘敏霞; 张耿; 叶海

doi:10.3788/fgxb20163704.0439

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色散平坦渐减光纤中非线性啁啾脉冲的传输及超连续谱的产生

器件制备及器件物理 | 更新时间：2020-08-12

- 色散平坦渐减光纤中非线性啁啾脉冲的传输及超连续谱的产生
- Nonlinear Chirped-pulse Propagation and Supercontinuum Generation in Dispersion-flattened Dispersion-decreasing Fibers
- 发光学报 2016年37卷第4期页码：439-445
- 作者机构：
  
  东莞理工学院电子工程学院,广东东莞,523000
- 作者简介：
- 基金信息：
  
  国家自然科学基金(61501118)();广东省自然科学基金(2014A030310262)资助项目()
- DOI：10.3788/fgxb20163704.0439
  中图分类号： TN929.11
- 纸质出版日期：2016-4-5，
  
  收稿日期：2015-12-15，
  
  修回日期：2016-1-18，
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徐永钊, 刘敏霞, 张耿等. 色散平坦渐减光纤中非线性啁啾脉冲的传输及超连续谱的产生[J]. 发光学报, 2016,37(4): 439-445

XU Yong-zhao, LIU Min-xia, ZHANG Geng etc. Nonlinear Chirped-pulse Propagation and Supercontinuum Generation in Dispersion-flattened Dispersion-decreasing Fibers[J]. Chinese Journal of Luminescence, 2016,37(4): 439-445
徐永钊, 刘敏霞, 张耿等. 色散平坦渐减光纤中非线性啁啾脉冲的传输及超连续谱的产生[J]. 发光学报, 2016,37(4): 439-445 DOI： 10.3788/fgxb20163704.0439.

XU Yong-zhao, LIU Min-xia, ZHANG Geng etc. Nonlinear Chirped-pulse Propagation and Supercontinuum Generation in Dispersion-flattened Dispersion-decreasing Fibers[J]. Chinese Journal of Luminescence, 2016,37(4): 439-445 DOI： 10.3788/fgxb20163704.0439.

摘要

基于非线性薛定谔方程

数值研究了色散平坦渐减光纤中非线性啁啾脉冲的传输及超连续谱的产生。研究结果表明

初始啁啾对脉冲传输及超连续谱产生的影响与泵浦条件和光纤参量的选取有很大关系。当色散平坦渐减光纤具有小的归一化二次色散系数时

适当的正啁啾能显著增强超连续谱的带宽

而负啁啾和太大的正啁啾抑制超连续谱的带宽。能增强超连续谱带宽的正啁啾有一个较宽的范围

但随着输入脉冲孤子阶数的降低

该范围将变窄。当色散平坦渐减光纤具有大的归一化二次色散系数同时输入脉冲为低阶孤子时

初始啁啾对超连续谱带宽的增强效果不明显

初始啁啾接近为0时可产生最宽的超连续谱。

Abstract

Based on the generalized nonlinear Schrdinger equation

nonlinear chirped-pulse propagation and supercontinuan (SC) generation in dispersion-flattened dispersion-decreasing fibers (DFDFs) were investigated numerically. The simulation results indicate that the effect of initial chirp parameter on pulse propagation and SC generation is highly related to the choices of pumping conditions and fiber parameters. When DFDF has small normalized quadratic dispersion coefficient

proper positive chirps can significantly enhance the SC bandwidth

while negative chirps or too large positive chirps suppresses the SC bandwidth. There is a wide range of positive chirps that can enhance the SC bandwidth

but the range of proper positive chirps become narrower as input soliton order decreases; When DFDF has large normalized quadratic dispersion coefficient and the pump pulse is a lower-order soliton

the enhancement of SC bandwidth by initial chirp parameter is insignificant

and the widest SC spectrum is generated when the initial chirp is close to zero.

关键词

非线性光学超连续谱色散平坦渐减光纤

Keywords

nonlinear opticssupercontinuumdispersion-flattened dispersion-decreasing fiber

references

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