| 基于Nyquist脉冲副载波调制的短距离光纤传输技术研究 |
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| 引用本文： | 成运,刘懿,何晶,肖敏雷,陈林.基于Nyquist脉冲副载波调制的短距离光纤传输技术研究[J].光电子．激光,2015(2):245-250. |
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| 作者姓名： | 成运 刘懿 何晶 肖敏雷 陈林 |
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| 作者单位： | 湖南人文科技学院 信息科学与工程系,湖南 娄底 417000;湖南大学 信息科学与工 程学院,湖南 长沙 410082;湖南大学 信息科学与工 程学院,湖南 长沙 410082;湖南人文科技学院 信息科学与工程系,湖南 娄底 417000;湖南大学 信息科学与工 程学院,湖南 长沙 410082 |
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| 基金项目： | 国家自然科学基金(61377079)、湖南省自然科学基金(12JJ2040)、湖南省重点学科建设项目和湖南省高校科 技创新团队支持计划资助项目 (1.湖南人文科技学院 信息科学与工程系,湖南 娄底 417000； 2.湖南大学 信息科学与工 程学院,湖南 长沙 410082) |
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| 摘 要： | 提出了一种适用于强度调制直接检测(IM/DD) 光系统的信号调制格式。这种基于Nyquist脉冲half cycle副载波调制(SCM)信号能有效提高频谱效率,为了减少传递函数引起的系统的性能 恶化,采 用了数字预均衡和后均衡实现对光纤损伤的补偿；建立了偏振复用(PDM)IM/DD系统 平台, 分析了Nyquist脉冲SCM信号在系统中的PAPR性能,实现了72Gbit/s 64-QAM N yquist脉冲SCM信号经过20km标准单模光纤(SMF)传输后其误码性能 小于前向纠错(FEC)阀值3．8×10－3。
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| 关 键 词： | 强度调制直接检测(IM/DD) Nyquist脉冲副载波调制(SCM) 正交幅度调制(QAM) |
| 收稿时间： | 2014/11/4 0:00:00 |
Investigation of short distance optical fiber transmission technology based on Nyquist pulse subcarrier modulation |
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| CHENG Yun,LIU Yi,CHEN Lin,XIAO Min-lei and CHEN L in.Investigation of short distance optical fiber transmission technology based on Nyquist pulse subcarrier modulation[J].Journal of Optoelectronics·laser,2015(2):245-250. |
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| Authors: | CHENG Yun LIU Yi CHEN Lin XIAO Min-lei and CHEN L in |
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| Affiliation: | College of Information Science and Engineering,Hunan University of Humaniti es,Science and Technology,Loudi 417000,China;College of Computer Science and Electronic E ngineering,Hunan University,Changsha 410082,China;College of Computer Science and Electronic E ngineering,Hunan University,Changsha 410082,China;College of Information Science and Engineering,Hunan University of Humaniti es,Science and Technology,Loudi 417000,China;College of Computer Science and Electronic E ngineering,Hunan University,Changsha 410082,China |
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| Abstract: | A signal modulation format which is suitable for intensity modulation dire ct detection (IM/DD) optical system is proposed.The signal based on Nyquist pul se subcarrier modulation (SCM) can effectively improve the spectrum efficiency.In order to reduce the performance deterioration caused by the system transfer function,digital pre- and post-equalization are applied in the system.We establish the experiment setup of polarization division multiplexing ( PMD) intensity modulation direct detection optical system with pre-equalization and analyze the peak to average power ratio (PAPR) of Nyquist pulse subcarrier modulation signal.The experiment successfully achieves the bit error rate (BER) of 64QAM Ny quist pulse subcarrier modulation signal less than forward-error-correction (FEC) threshol d after transmission along 20km standard single-mode fiber (SSMF)for the firs t time. |
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| Keywords: | intensity modulation direct detection (IM/DD) Nyquist pulse subcarrier modul ation quadrature amplitude modulation (QAM) |
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