混合拉曼和相位敏感放大器用于MDM系统中超低噪音的少数模式放大和模式交叉声调和
Optics express
|August 13, 2025
概括
本研究介绍了一种新型混合光学放大器,用于模式分割复杂化 (MDM) 系统. 新的放大器大大降低了噪音,并抑制了模态交叉声,提高了系统的整体性能.
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:
- 模式分割复杂化 (MDM) 系统需要超低噪音放大和有效的模式交叉干扰缓解,以提高性能.
- 现有的放大技术面临的挑战是,在少数模式纤维中同时解决噪声和交叉声.
研究的目的:
- 提出并实验证明一种混合光学放大器,它结合了几模分布式拉曼放大器 (FM-DRA) 和单模相位敏感放大器 (PSA).
- 为了评估放大器在增益,噪声数字和MDM系统的模态交叉声抑制方面的性能.
主要方法:
- 实现一个混合放大器,将FM-DRA与PSA集成在一起.
- 实验设置使用100公里的少数模式光纤进行信号传输.
- 在35nm带宽的光学增益,噪声数字和模态交声的表征.
主要成果:
- 混合放大器在35nm带宽上实现了20.3dB (LP01) 和14.8dB (LP02) 的平均开关收益.
- 实际噪声值低于 -2.8 dB (LP01) 和 -3.7 dB (LP02) 记录,最低值达到 -5.9 dB和 -6.8 dB.
- 每种模式都观察到显著的模式交叉声量减少,优于独立的FM-DRA.
结论:
- 拟议的少数模式混合光学放大器有效地提高了信号增益和光学信号对噪声比.
- 该系统表现出卓越的噪声性能和大量的模式交叉语音抑制,这对于推进MDM技术至关重要.
- 这种混合放大方案显示了改善模式分割复杂化系统的整体性能和容量的巨大潜力.
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