| Effects of walk-off on cross-phase modulation induced modulation instability in an optical fibre with high-order dispersion |
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| 作者姓名： | 钟先琼 向安平 |
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| 作者单位： | Department of Optoelectronic Technology, Chengdu University of Information
Technology, Chengdu 610225, China;Department of Optoelectronic Technology, Chengdu University of Information
Technology, Chengdu 610225, China |
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| 基金项目： | 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.
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| 关 键 词： | 光纤 高阶色散 调制不稳定性 交叉相位调制 离散效应 |
| 收稿时间： | 2006-09-18 |
| 修稿时间： | 2006-09-182006-11-06 |
Effects of walk-off on cross-phase modulation induced modulation instability in an optical fibre with high-order dispersion |
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| Zhong Xian-Qiong and Xiang An-Ping.Effects of walk-off on cross-phase modulation induced modulation instability in an optical fibre with high-order dispersion[J].Chinese Physics B,2007,16(6):1683-1688. |
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| Authors: | Zhong Xian-Qiong and Xiang An-Ping |
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| Institution: | Department of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China |
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| 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. |
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| Keywords: | modulation
instability cross-phase modulation walk-off effect the difference
ofthe third-order dispersion |
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