Influence of gain coefficient on the self-similar pulses propagation in a dispersion-decreasing fiber

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• 作者：QiaoFen Zhang ; ^{zhqf@gdut.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; YaoHua Deng
• 关键词：42.65.Tg ; 42.81.Dp
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：127
• 期：12
• 页码：5110-5114
• 全文大小：663 K

文摘

This paper first investigates the influence of the dispersion-decreasing optical fiber structure on the self-similar pulses interaction and compression. The dynamic of the evolution of a pair of self-similar pulses in a dispersion-decreasing optical fiber with normal group-velocity dispersion (ND-DDF) under different gain coefficient g₀ of DDF is analyzed, and the chirp evolution is also studied to analyze the propagation characteristic of self-similar pulses. The numerical simulations show that the change of gain coefficient g₀ of DDF can impact directly on the linear chirp of the self-similar pulses. We find out that the smaller g₀ can generate better high-quality femto-second pulses than the higher g₀ after pulses compression. Finally, we got a pair of ultra-short pulses with a FWHM of 124 fs at g₀ = 0.015 m⁻¹, indicating efficient and high-quality pulse compression.