| Performance Comparison of WDM Systems with Different Duty Cycle |
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| 引用本文： | YUJianjun GUANKejian 等. Performance Comparison of WDM Systems with Different Duty Cycle[J]. 半导体光子学与技术, 1998, 4(3): 166-173 |
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| 作者姓名： | YUJianjun GUANKejian 等 |
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| 作者单位： | [1]P.O.Box57,SchoolofTelecom.Eng.,BeijingUniversity,ofPostsandTelecommunications,Beijing100088,CHN [2]P.O.B,SchoolofTelecom.Eng.,BeijingUniversity,ofPostsandTelecommunications,Beijing100088,CHN |
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| 基金项目： | Supported in part by the Ministry of Posts and Telecommunication and National Natural Science Foundation of China. |
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| 摘 要： | The performances of nonlinear WDM systems with different duty cycle are compared by means of numerical simulation.The numerical results show that the optical pulse with duty cycle of 0.5 is superior to the conventional NRZ modulation schene.The conclusion is different from that of some references.The reason is that inter symbol interference is not included in some references.In fact,inter symbol interference plays an important role in monlinear WDM system.Although the larger the duty cycle is,the stronger the effect of the cross-phase modulation and self-phase modulation on nonlinear WDM is however,the larger the duty cycle is ,the stronger the inter symbol interference is.
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| 关 键 词： | 占空因数 交叉相调制 分散特性 自相调制 波分复用 光通信 |
| 收稿时间： | 1998-03-12 |
Performance Comparison of WDM Systems with Different Duty Cycle |
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| YU Jianjun,GUAN Kejian,YANG Bojun. Performance Comparison of WDM Systems with Different Duty Cycle[J]. Semiconductor Photonics and Technology, 1998, 4(3): 166-173 |
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| Authors: | YU Jianjun GUAN Kejian YANG Bojun |
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| Abstract: | The performances of nonlinear WDM systems with different duty cycle are compared by means of numerical simulation.The numerical results show that the optical pulse with duty cycle of 0.5 is superior to the conventional NRZ modulation scheme.The conclusion is different from that of some references.The reason is that inter symbol interference is not included in some references.In fact,inter symbol interference plays an important role in nonlinear WDM system.Although the larger the duty cycle is ,the stronger the effect of the cross-phase modulation and self-phase modulation on nonlinear WDM is,however,the larger the duty cycle is,the stronger the inter symbol interference is. |
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| Keywords: | Cross-phase Modulation Dispersion Compensation Self-phase Modulation Wavelength Division Multiplexing |
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