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Numerical simulation on ultrashort laser pulses propagating in microstructure fi bers

Wang Qing-Yue Li Yan-Feng Hu Ming-Lie Li Shu-Guang Zhou Gui-Yao Xing Guang-Long Hou Lan-Tian

Numerical simulation on ultrashort laser pulses propagating in microstructure fi bers

Wang Qing-Yue, Li Yan-Feng, Hu Ming-Lie, Li Shu-Guang, Zhou Gui-Yao, Xing Guang-Long, Hou Lan-Tian
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  • Received Date:  02 August 2004
  • Accepted Date:  13 January 2005
  • Published Online:  19 April 2005

Numerical simulation on ultrashort laser pulses propagating in microstructure fi bers

  • 1. (1)天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津 300072; (2)燕山大学红外光纤与传感研究所,秦皇岛 066004

Abstract: For the first time to our knowledge, it is put forward that GNSE can be resolved by adaptive split-step Fourier method (ASSFM) basing on split-step Fourier method (SSFM) in this paper. It is found that ASSFM must be used to resolve GNSE f or ensuring precision when the frequency shift corresponding to soliton peak val ue is remarkable and microstructure fibers' parameters change along with frequen cy remarkably. It is found that the influence of dispersion on laser pulses evol ution and supercontinuum generation in microstructure fiber is remarkably. Mech anism and scope of expanded spectrum are different in fiber different dispersion regions. The precision of numerical simulation by ASSFM is higher than SSFM in the process of laser pulses propagating in microstructure fibers by reason that the variation of wavelength corresponding to pulse peak power can be considered adequately.

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