中国物理B ›› 2007, Vol. 16 ›› Issue (6): 1683-1688.doi: 10.1088/1009-1963/16/6/033

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Effects of walk-off on cross-phase modulation induced modulation instability in an optical fibre with high-order dispersion

钟先琼, 向安平   

  1. Department of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China
  • 收稿日期:2006-09-18 修回日期:2006-11-06 出版日期:2007-06-20 发布日期:2007-06-20
  • 基金资助:
    Project supported by the Fundamental Application Research Project of the Department of Science {\&} Technology of Sichuan Province (Grant Nos~05JY029-084 and 04JY029-103), the Key Program of Natural Science Foundation of Educational Commission of Sichuan Province (Grant No 2006A124), and the Foundation of Science {\&} Technology Development of Chengdu University of Information Technology (Grant No KYTZ20060604).

Effects of walk-off on cross-phase modulation induced modulation instability in an optical fibre with high-order dispersion

Zhong Xian-Qiong(钟先琼)† and Xiang An-Ping(向安平)   

  1. Department of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China
  • Received:2006-09-18 Revised:2006-11-06 Online:2007-06-20 Published:2007-06-20
  • Supported by:
    Project supported by the Fundamental Application Research Project of the Department of Science {\&} Technology of Sichuan Province (Grant Nos~05JY029-084 and 04JY029-103), the Key Program of Natural Science Foundation of Educational Commission of Sichuan Province (Grant No 2006A124), and the Foundation of Science {\&} Technology Development of Chengdu University of Information Technology (Grant No KYTZ20060604).

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摘要： This paper investigates the effects of walk-off among optical pulses on cross-phase modulation induced modulation instability in the normal dispersion region of an optical fibre with high-order dispersion. The results indicate that, in the case of high-order dispersion, the walk-off effect takes on new characteristics and will influence considerably the shape, position and especially the number of the spectral regions of the gain spectra of modulation instability. Not only the group-velocity mismatch, but also the difference of the third-order dispersion of two optical waves will alter the gain spectra of modulation instability but in different ways. Depending on the values of the walk-off parameters, the number of the spectral regions may increase from two to at most four, and the spectral shape and position may change too.

Abstract: This paper investigates the effects of walk-off among optical pulses on cross-phase modulation induced modulation instability in the normal dispersion region of an optical fibre with high-order dispersion. The results indicate that, in the case of high-order dispersion, the walk-off effect takes on new characteristics and will influence considerably the shape, position and especially the number of the spectral regions of the gain spectra of modulation instability. Not only the group-velocity mismatch, but also the difference of the third-order dispersion of two optical waves will alter the gain spectra of modulation instability but in different ways. Depending on the values of the walk-off parameters, the number of the spectral regions may increase from two to at most four, and the spectral shape and position may change too.

Key words: modulation instability, cross-phase modulation, walk-off effect, the difference ofthe third-order dispersion

中图分类号:  (Propagation, scattering, and losses; solitons)

  • 42.81.Dp
42.65.Jx (Beam trapping, self-focusing and defocusing; self-phase modulation) 42.65.Tg (Optical solitons; nonlinear guided waves)