| 色散位移光纤反常色散区平坦超宽超连续谱的产生 |
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| 引用本文： | 陈泳竹,徐文成,崔虎,徐永钊,于丙涛,刘颂豪. 色散位移光纤反常色散区平坦超宽超连续谱的产生[J]. 光学学报, 2004, 24(11): 468-1472 |
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| 作者姓名： | 陈泳竹 徐文成 崔虎 徐永钊 于丙涛 刘颂豪 |
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| 作者单位： | 广东技术师范学院机电系,广州,510635;华南师范大学量子电子学研究所,广州,510631 |
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| 基金项目： | 广东教育厅自然科学基金研究项目 (2 0 0 0 19)资助课题 |
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| 摘 要： | 采用一种在色散位移光纤反常色散区产生平坦超宽超连续谱的方法。利用数值计算对色散位移光纤反常色散区高阶孤子压缩效应产生超连续谱展开了全面、深入的研究。结果表明，在色散位移光纤的反常色散区色散斜率(三阶色散)对超连续谱的形成起着决定性的作用；进一步研究表明，抽运脉冲的峰值功率及脉宽对超连续谱的谱宽和平坦度都有着重要影响，而高阶非线性效应对超连续谱产生没有显著影响。综合考虑以上因素，超续谱的谱宽和平坦度可以获得最大的优化。
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| 关 键 词： | 导波与光纤光学 超连续谱 色散位移光纤 色散斜率 |
| 收稿时间： | 2003-05-06 |
Flatly Ultra-Broadened Supercontinuum Generated in Anomalous Dispersion Region of a Dispersion-Shifted Fiber |
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| Chen Yongzhu Xu Wencheng Cui Hu Xu Yongzhao Yu Bingtao Liu Songhao. Flatly Ultra-Broadened Supercontinuum Generated in Anomalous Dispersion Region of a Dispersion-Shifted Fiber[J]. Acta Optica Sinica, 2004, 24(11): 468-1472 |
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| Authors: | Chen Yongzhu Xu Wencheng Cui Hu Xu Yongzhao Yu Bingtao Liu Songhao |
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| Affiliation: | Chen Yongzhu1 Xu Wencheng2 Cui Hu2 Xu Yongzhao2 Yu Bingtao2 Liu Songhao2 1 Department of Electro-Mechanical Engineering,Guangdong Ploytechnic Normal University,Guangzhou 510635 2 Institute of Quantum Electronics,South China Normal University,Guangzhou 510631 |
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| Abstract: | A method for flatly ultra-broadened supercontinuum generated in anomalous dispersion region of a dispersion-shifted fiber is introduced. Supercontinuum generated in anomalous dispersion region of dispersion-shifted fibers due to compression effects of higher-order soliton is studied in detail through numerical simulations. The results show that the dispersion slope of dispersion-shifted fiber is crucial to supercontinuum generation. It also shows that both the peak power and pulse width of pump pulse affect the spectral width and flatness of supercontinuum markedly, but higher-order nonlinear effects can be ignored. A flatly ultra-broadened supercontinuum near 300 nm with the spectral-intensity fluctuation less than ±2 dB is obtained by optimizing the relative parameters. |
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| Keywords: | guided wave and fiber optics supercontinuum dispersion-shifted fiber dispersion slope |
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