概括
本研究介绍了一种新的广泛线性等分器,用于在多孔系统中连贯的数字组合. 它有效地减轻了由硬件缺陷和时间不匹配引起的性能罚款,提高了信号结合效率.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 光子学是指光子学的使用方法.
背景情况:
- 与多个小光圈相结合的连贯数字组合比单个大光圈提供了优势,包括改进的流缓解和可扩展性.
- 然而,在多孔系统中,相位/方位 (I/Q) 不平衡,I/Q 偏差和时间不匹配会降低性能,特别是在大型系统中.
研究的目的:
- 设计和分析一个复杂值的多输入多输出 (MIMO) 广泛线性 (WL) 均等器,用于同时进行多孔通道均等和信号组合.
- 解决OSNR处罚和由于硬件缺陷和时间延迟而导致的组合效率降低的问题.
主要方法:
- 设计了一个复杂值的MIMO 4N×2 WL等分器.
- 基于WL复杂分析的通用分析模型被推导出来,以证明同时进行等分和组合.
- 使用10Gbps的PM-QPSK和20Gbps的PM-16QAM调制进行了离线模拟.
主要成果:
- 拟议的WL等分器可以同时等分和结合多孔信号与适当的触摸系数.
- 实现了高的组合效率:PM-QPSK在-6dB的OSNR下达到96%以上,PM-16QAM在0dB的OSNR下达到80%以上.
结论:
- 开发的WL等分器有效地弥补了连贯数字组合系统中的硬件缺陷和时间不匹配.
- 这项技术提高了大型多孔光通信系统的可行性和效率,即使在具有挑战性的条件下.
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