光纤色散对超连续谱产生的影响

陈泳竹; 徐文成; 崔虎; 陈伟成; 刘颂豪

光学学报, 2003, 23 (3): 297, 网络出版: 2006-06-27

光纤色散对超连续谱产生的影响

The Effect of Fiber Dispersion on Generation of Supercontinuum

论文大纲

陈泳竹 ^*徐文成崔虎陈伟成刘颂豪

作者单位

华南师范大学量子电子学研究所,广州,510631

摘要

对1550 nm波长附近具有不同色散特性的光纤产生超连续谱进行了详细的计算和分析。结果表明,在反常色散区和零色散区,由于内脉冲拉曼散射效应和三阶色散效应的影响,不能产生平坦、宽带的超连续谱。而在正常色散区,可以产生平坦光滑的超连续谱。进一步研究表明,具有较小正常色散的色散平坦光纤对于产生平坦、宽带的超连续谱极为有效。通过增强脉冲抽运功率,可以得到谱强起伏小于10 dB、带宽达300nm以上的平坦超宽超连续谱。

Abstract

Supercontinuum generation from optical fibers with different group velocity dispersion (GVD) was simulated and calculated in details. It is found that flat and wideband supercontinuum cannot be obtained in anomalous and zero GVD regions because of fiber higher order nonlinearity (intrapulse Raman scattering) and higher order dispersion (TOD). Nevertheless, the broader and smoother supercontinuum spectrum can be obtained in normal GVD region. It is also found that a dispersion flattened fiber with small normal GVD is most suitable for flat and wideband supercontinuum generation. A super wide supercontinuum more than 300 nm with the spectral intensity fluctuation less than 10 dB was generated from such a fiber through increasing the pump power of the pulse.

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陈泳竹, 徐文成, 崔虎, 陈伟成, 刘颂豪. 光纤色散对超连续谱产生的影响[J]. 光学学报, 2003, 23(3): 297. 陈泳竹, 徐文成, 崔虎, 陈伟成, 刘颂豪. The Effect of Fiber Dispersion on Generation of Supercontinuum[J]. Acta Optica Sinica, 2003, 23(3): 297.

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