概括
我们介绍了一种新的双调制方案,使用直接调制的激光和电吸收调制器来实现高速光通信. 这种方法将传输速率提高到84 Gb/s,为下一代网络提供了具有成本效益的解决方案.
科学领域:
- 视觉通信工程 视觉通信工程
- 光子学和光电子学.
背景情况:
- 传统的强度调制方案在频谱效率和传输速率方面存在局限性.
- 染色分散和带宽限制导致相位扭曲,影响信号完整性.
- 直接调制激光器 (DML) 和电吸收调制器 (EAM) 是光传输系统的关键组件.
研究的目的:
- 提出和验证一个双调制方案,整合相位和强度调制,用于增强光通信.
- 为了解决由色谱分散和带宽限制引起的相位扭曲.
- 提高光学接入网络的频谱效率和传输速率.
主要方法:
- 一个双调制方案,使用DML进行相位调制和EAM进行强度调制.
- 导出相损伤公式来分析扭曲.
- 实现一个修改后的第二阶段Voltairequalizer (VE) 算法,以减轻相位扭曲.
- 信号生成,传输和恢复的实验验证.
主要成果:
- 双调制方案实现了84Gb/s的最大传输速率,超过了传统的单阶段调制.
- 第二阶段的 VE 证明了对 DML 声变化的稳定性,简化了系统校准.
- 对背对背和25公里单模光纤传输的比特误差率 (BER) 观察到微不足道的差异.
- 提出的方案实现了高光谱效率.
结论:
- 拟议的双调制方案显著提高了传输速率和频谱效率.
- 该系统与现有的被动光学网络 (PON) 兼容,提供了一个具有成本效益的解决方案.
- 开发的均衡算法有效地减轻相位扭曲,改善信号质量和系统稳定性.
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