概括
一个新的平价时间 (PT) 对称光电子振荡器 (OEO) 提高了微波信号质量. 这种PT对称的OEO实现了高侧模式抑制比率和低相位噪声生成的信号.
科学领域:
- 光子学 是一个光子学.
- 微波工程 微波工程
- 量子物理学 量子物理学 是一种量子物理学.
背景情况:
- 光电子振荡器 (OEO) 对于产生高频微波信号至关重要.
- 改善侧模式抑制比 (SMSR) 和相位噪声对于先进的应用是必不可少的.
研究的目的:
- 提出并实验证明一种基于平价时间对称的新型光电子振荡器 (OEO).
- 为了提高产生的微波信号的性能,特别是SMSR和相位噪声.
主要方法:
- 将一个PT对称结构与相调节器和交联光学波器集成到OEO中.
- 使用PT对称OEO进行10GHz微波信号的实验生成.
- 使用不同的纤维长度和YIG过器来分析PT对称效应并调整振荡频率.
主要成果:
- 在10kHz的偏移下实现了62.5dB的SMSR和-148.88dBc/Hz的相位噪声,用于4.4公里OEO循环的10GHz信号.
- 使用1公里循环,在10kHz的偏移下使用8至11GHz的可调节单频振荡,SMSR>50dB和相位噪声<-130dBc/Hz.
- 在各种振荡频率下验证了PT对称效应.
结论:
- 拟议的PT-对称OEO有效地平衡了循环的增益和损失,显著提高了微波信号质量.
- PT对称性为提高OEO性能提供了一个有前途的方法,使可调和高质量的微波信号产生成为可能.
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