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Cross-phase modulational sideband instability in wavelength-division-multiplexing system with periodic lumped amplifiers

Zhu Hai-Dong Li Yuan-Min Tang Xiang-Hong Li Qi-Liang Lin Li-Bin

Cross-phase modulational sideband instability in wavelength-division-multiplexing system with periodic lumped amplifiers

Zhu Hai-Dong, Li Yuan-Min, Tang Xiang-Hong, Li Qi-Liang, Lin Li-Bin
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Publishing process
  • Received Date:  02 July 2004
  • Accepted Date:  28 October 2004
  • Published Online:  05 March 2005

Cross-phase modulational sideband instability in wavelength-division-multiplexing system with periodic lumped amplifiers

  • 1. (1)杭州电子科技大学通信学院,杭州 310018; (2)杭州电子科技大学通信学院,杭州 310018;四川大学物理科学与技术学院,成都 610064; (3)四川大学物理科学与技术学院,成都 610064

Abstract: Periodically spaced amplifiers along a transoceanic fiber links provide the phas e_matching condition for four_wave_mixing because of Kerr nonlinearity. Both ana lytic method and numerical method are used to study the cross_phase modulational sideband instability in fiber links with periodical lump amplifiers. In the ana lytic method, the gain of sideband instability is obtained. In the numerical met hod, by use of split_step Fourier transform method, the frequency spectra of out put optical pulses are obtained in normal and anomalous fiber links, and there a re sidebands in the spectrum configuration. By comparison of the results from tw o the methods, they are constant with each other.

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