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Updated: May 8, 2025

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Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
10.7K
概括
本研究介绍了一种具有成本效益的100 Gbits/s连贯被动光网络 (PON),使用分布式反激光器 (DFB) 和一种新的载波恢复算法. 该系统实现了高功率预算,证明了为下一代光接入网络提供可行的解决方案.
科学领域:
- 光学通信是指光学通信.
- 光子学是指光子学的使用方法.
- 电信工程 电信工程 电信工程
背景情况:
- 一致的被动光学网络 (PON) 提供高带宽,但通常受到激光器成本的限制.
- 分布反激光器 (DFB) 是外部腔激光器 (ECL) 的更具成本效益的替代品,但会增加相位噪声.
- 有效的载波相恢复对于保持高速光通信系统的信号完整性至关重要.
研究的目的:
- 展示一个具有成本效益的100 Gbits/s双极化方位相位转换 (DP-QPSK) 一致的PON系统.
- 为了减轻低成本DFB的相位噪声,使用一种新的载体恢复方法.
- 为实际部署验证系统的性能和功率预算.
主要方法:
- 使用低成本的分布式反激光器 (DFB) 作为OLT和ONU的唯一光源.
- 实施了一种简单的残留光载波 (ROC) 方法,以插入双功能频域试验声 (FPT).
- 集成的数字子载波复杂化 (DScM) 与ROC方法,包括守护间隔,用于载波相恢复 (CPR) 和频率偏移均等 (FOE).
主要成果:
- 在28Gbaud和32Gbaud实现了成功的传输,功率预算分别为33.90dB和35.65dB.
- 两种功率预算都超过了所需的29 dB值,达到HD-FEC和SD-FEC错误纠正值.
- 证明了FPT辅助载波阶段恢复对于数字子载波复杂化-QPSK信号的优越性.
结论:
- 提出的成本效益高的DP-QPSK连贯PON系统使用DFB和FPT辅助的CPR是高速光接入网络的可行解决方案.
- 该ROC方法有效地减轻了DFB的相位噪声,从而实现了高性能传输.
- 与传统的连贯PON相比,该系统可显著降低成本,而不会影响性能.
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