Abstract In this paper, a new method is proposed to generate broad supercontinuum (SC) spectra in the single-mode optical fibre with concave dispersion profile. We numerically simulate pulse evolutions and discuss physics mechanism in detail for SC spectrum generation in the optical fibre with concave dispersion profile. Furthermore, general criteria are presented for specifying the shape of SC spectrum by introducing normalized parameters, which are related to the fibres and the initial pump pulses. The results show that the flat and broad SC spectra are indeed generated in our proposed optical fibre.
Received: 26 May 2005
Revised: 10 January 2006
Accepted manuscript online:
(Ultrafast processes; optical pulse generation and pulse compression)
Fund: Project supported by the Natural Science Foundation of Guangdong Province of China (Grant No 04010397) and the Excellent Teacher Foundation of Guangdong Province (Grant No Q02084).
Cite this article:
Xu Wen-Cheng (徐文成), Gao Jie-Li (高洁丽), Liang Zhan-Qiang (梁湛强), Chen Qiao-Hong (陈巧红), Liu Song-Hao (刘颂豪) Supercontinuum spectra generation in the single-mode optical fibre with concave dispersion profile 2006 Chinese Physics 15 715
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