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少数模式光纤基于布拉格格子的同时多通道CSRZ到NRZ格式转换方案为LP01和LP11的LP01和LP11
Optics express
|March 5, 2024
概括
这项研究引入了一种使用少数模式光纤布拉格格 (FM-FBG) 的新型光纤方法,用于将光信号格式从载波抑制回归到零 (CSRZ) 转换为非回归到零 (NRZ). 该技术成功地将多个频道转换成具有高信号质量的频道,证明了它的稳定性.
科学领域:
- 光子学和光学通信技术
- 光纤信号处理 光纤信号处理
背景情况:
- 光信号格式转换对于高速数据传输至关重要.
- 目前用于将载波抑制回归到零 (CSRZ) 信号转换为非回归到零 (NRZ) 信号的现有方法面临着局限性,特别是在多模式光纤系统中.
研究的目的:
- 提出并展示一个新的多通道格式转换方案.
- 为了实现高效的CSRZ到NRZ转换,无论是LP01和LP11模式使用几个模式的纤维布拉格格 (FM-FBG).
主要方法:
- 基于CSRZ和NRZ信号的光谱差异为FM-FBG的多通道光谱响应的设计.
- 协同设计LP11模式响应光谱,使其与LP01模式光谱对齐,用于同时进行模式过.
- 四个40 Gbit/s,200 GHz间隔的CSRZ通道的数值模拟转换为NRZ信号.
主要成果:
- 成功地将LP01和LP11频道从CSRZ转换为NRZ格式.
- 在转换后的NRZ信号中达到超过14dB的高Q因子.
- 演示了转换信号的清洁和开放眼图,表明高信号完整性.
- 证实了FM-FBG系统对中央波长调节的稳定性.
结论:
- 拟议的FM-FBG方案提供了一个有效的解决方案,用于在少数模式纤维中将多通道CSRZ转换为NRZ格式.
- 该方法支持同时处理LP01和LP11模式,提高光谱效率.
- 经过证明的稳定性和高性能使得该方案对未来的光通信系统具有前景.
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