| 基于脉冲位置调制系统的偏振模色散监测方案 |
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| 引用本文： | 王梓骁,罗风光,李斌,胡杭听,杨帅龙.基于脉冲位置调制系统的偏振模色散监测方案[J].激光技术,2018,42(1):1-4. |
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| 作者姓名： | 王梓骁 罗风光 李斌 胡杭听 杨帅龙 |
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| 作者单位： | 华中科技大学?光学与电子信息学院, 武汉 430074 |
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| 摘 要： | 为了实现对脉冲位置调制传输系统光纤信道中偏振模色散的动态监测，提出了一种新型偏振膜色散监测方案，并基于监测原理构建了数学模型。该方案基于单边带内不同偏振信号相位差实现，具有结构简单、易于实现、成本低等优点。结果表明，本方案可以实现对光信号的差分群延时与偏振态的动态监测，即当差分群延时在0ps~100ps范围内时，可准确监测；同时证实了其与信号速率关系较小，能够适应不同速率的系统，且可对脉冲位置调制传输系统的偏振模色散进行实时动态监测。该方案是一个高效可行的偏振模色散监测方案。
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| 关 键 词： | 光通信 偏振膜色散监测 光纤信道 单边带 相位差 |
| 收稿时间： | 2017-03-24 |
Monitoring scheme of polarization mode dispersion based on pulse position modulation system |
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| Abstract: | In order to monitor polarization mode dispersion (PMD) of the fiber communication channel in a pulse position modulation (PPM) transmission system dynamically, a novel PMD monitoring method was proposed based on single sideband polarization phase difference detection technology, and the mathematical model of the method was built in accordance with monitoring principle. The structure of the method was simple, so it can be realized easily at very low cost. The simulation results indicate that the method can realize dynamic PMD monitoring including differential group delay (DGD) and polarization state of output light, and the technique can monitor DGD accurately in the range of 0ps to 100ps. It is proved that the operation of proposed PMD monitor method is independent of data rates, which shows the proposed method can satisfy the need of real time PMD monitoring for PPM transmission systems. It indicates that the proposed method is feasible and effective for PMD monitoring. |
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