| 三阶色散效应对光码分多址系统误码率的影响 |
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| 引用本文： | 林传亿,余向阳.三阶色散效应对光码分多址系统误码率的影响[J].激光与光电子学进展,2010(5). |
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| 作者姓名： | 林传亿 余向阳 |
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| 作者单位： | 中山大学光电材料与技术国家重点实验室; |
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| 基金项目： | 国家自然科学基金(10574166);;广东省自然科学基金(8151027501000062)资助课题 |
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| 摘 要： | 光码分多址(OCDMA)系统的误码率是评价系统性能的重要指标,由于色散和非线性效应会导致超短光脉冲在光纤传输过程中脉宽的展宽,进而影响OCDMA系统的误码率。在基于理想情况的OCDMA系统误码率定义的基础上,研究了三阶色散和三阶非线性效应对系统误码率的影响,进一步分析了有硬限幅器和二维OCDMA系统的误码率。结果表明,三阶色散和三阶非线性效应都会导致OCDMA系统误码率的增大,但三阶非线性效应对系统性能影响没有三阶色散效应明显;在系统参数相同基础上,接收端引入光硬限幅器和系统采用二维编码均可优化系统性能。
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| 关 键 词： | 光通信 光码分多址 三阶色散 误码率 |
Effects of Third Order Dispersion on the BER of OCDMA System |
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| Lin Chuanyi Yu Xiangyang.Effects of Third Order Dispersion on the BER of OCDMA System[J].Laser & Optoelectronics Progress,2010(5). |
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| Authors: | Lin Chuanyi Yu Xiangyang |
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| Affiliation: | State Key Laboratory of Optoelectronic Materials and Technologies;Sun Yat-sen University;Guangzhou;Guangdong 510275;China |
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| Abstract: | The bit error rate (BER) of optical code-division multiple-access (OCDMA) system is an important index of evaluating system performance because it can reflect the premise of considering dispersion and nonlinear effect broadening in single-mode fibers. Based on the definition of BER in ideal condition, the influences of third-order dispersion (TOD) and third-order nonlinear on the BER are introduced and the BER of OCDMA system with optical hard-limiter (OHL) and 2D OCDMA system is analysed. The results show ... |
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| Keywords: | optical communications optical code-division multiple-access third-order dispersion bit error rate |
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