| 一种抑制OCDMA系统色散和非线性效应的方法 |
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| 引用本文： | 李月卉,安晓强.一种抑制OCDMA系统色散和非线性效应的方法[J].电子科技大学学报(社会科学版),2007(5). |
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| 作者姓名： | 李月卉 安晓强 |
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| 作者单位： | 西华大学数学与计算机学院 成都610039(李月卉)，西南技术物理研究所 成都610041(安晓强) |
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| 摘 要： | 色散和非线性效应对光CDMA系统性能会产生严重影响。针对此类问题,该文通过对采用严格最佳(F,k,1)光正交码的单极性光CDMA系统进行理论分析,得到了色散和非线性效应对光CDMA系统性能的影响的量化表达式。数值结果表明:光纤信道的色散和非线性效应会导致系统性能明显下降,因此,色散补偿技术必不可少。不同于传统的色散补偿方案,该文提出采用非零色散位移光纤(NZ-DSF)搭配色散补偿光纤(DCF)的新方案,在进行色散补偿的同时,尽可能弱化非线性效应的影响,从而有效地改善系统性能。
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| 关 键 词： | 色散补偿光纤 色散 非线性效应 非零色散位移光纤 光码分多址 |
A Method of Cotrol of Dispersion and Non-Linear Effect in OCDMA System |
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| LI Yue-hui,AN Xiao-qiang.A Method of Cotrol of Dispersion and Non-Linear Effect in OCDMA System[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2007(5). |
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| Authors: | LI Yue-hui AN Xiao-qiang |
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| Institution: | LI Yue-hui1,AN Xiao-qiang2 |
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| Abstract: | The dispersion and non-linear effect on performance of optical Code Division Multiple Access (CDMA) system based on strict optimal ( F , k ,1)optical orthogonal codes are analyzed. Numerical result shows that the dispersion and non-linear effect can deteriorate the system performance, so the technology of dispersion compensation is necessary. Different from the traditional schemes, a new scheme of using None Zero Dispersion Shift Fibre (NZ-DSF) and Dispersion Compensate Fibre (DCF) is proposed to weak the non-linear effect when compensating the dispersion. Therefore the performance of system can be enhanced by the NZ-DSF. |
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| Keywords: | DCF dispersion nonlinear effect NZ-DSF optical code division multiple access |
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