| 基于异步幅度抽样的高速光信号色散监测方法 |
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| 引用本文： | 茅帅帅,诸波,王永强,刘国庆,夏丽,胡芳仁. 基于异步幅度抽样的高速光信号色散监测方法[J]. 红外与激光工程, 2014, 43(7): 2307-2311 |
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| 作者姓名： | 茅帅帅 诸波 王永强 刘国庆 夏丽 胡芳仁 |
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| 作者单位： | 1.南京邮电大学光电工程学院,江苏南京 210023 |
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| 基金项目： | 国家自然科学基金(61274121);江苏省自然科学基金(BK2012829);南京邮电大学人才项目(NY212007) |
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| 摘 要： | 针对目前异步幅度统计直方图（AAH）对色散监测范围小、灵敏度低的缺点，提出一种基于异步幅度抽样（AAS）的色散监测方法，定义无量纲色散监测参数G，将色散与其他损伤因子分离开。使用 OptiSystem9.0 软件搭建了200Gbps DP-16QAM 监测系统，在不同信噪比和占空比下进行色散监测仿真实验，探讨了信噪比和占空比对该方法的监测精度的影响，并对色散监测误差进行了分析。仿真结果表明基于该参数的色散监测方法受噪声因子影响小、精确度高，能实现在0~600 ps/nm 全范围内对色散的有效监测，为在更高阶调制信号的光纤通信系统中进行色散监测管理提供一定的参考。
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| 关 键 词： | 色散监测 异步幅度抽样 双偏振-16 进制正交幅相调制 |
| 收稿时间： | 2013-11-17 |
Chromatic dispersion monitoring method of high-rate optical signal based on AAS |
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| Affiliation: | 1.College of Optoelectronic Engineering,Nanjing University of Posts &Telecommunications,Nanjing 210023,China |
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| Abstract: | Considering the narrow range and low sensitivity of recent chromatic dispersion (CD) monitoring by the asynchronous amplitude histogram (AAH) method, a novel CD monitoring technique based on asynchronous amplitude sampling(AAS) for higher order modulation formats was proposed. The parameter G, which can separate the CD from the other impairments effectively was defined. The monitoring system for 200 Gbps DP-16QAM was constructed by simulation software OptiSystem9.0. Under different optical signal-to-noise ratio and duty cycles, the dispersion monitoring was realized. The deviations caused by OSNR and varied duty cycles were investigated, and the inaccuracy was analyzed. Simulation results show that the method based on parameter G possesses the advantages of lower influence of noise and higher precision, which leads to effective monitoring of the dispersion within 0-600 ps/nm. And this method can provide a reference for the monitoring and management of dispersion in optical fiber communication system with higher order modulation signals. |
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