激光线宽
抖动
相位噪声
激光器
光学
计算机科学
电子工程
光谱密度
物理
电信
工程类
作者
Jiaqi Chen,Chao Chen,Jing-Jing Sun,Jianwei Zhang,Zhaohui Liu,Li Qin,Yong-Qiang Ning,Lijun Wang
出处
期刊:Sensors
[MDPI AG]
日期:2024-06-05
卷期号:24 (11): 3656-3656
被引量:2
摘要
Narrow-linewidth lasers mainly depend on the development of advanced laser linewidth measurement methods for related technological progress as key devices in satellite laser communications, precision measurements, ultra-high-speed optical communications, and other fields. This manuscript provides a theoretical analysis of linewidth characterization methods based on the beat frequency power spectrum and laser phase noise calculations, and elaborates on existing research of measurement technologies. In addition, to address the technical challenges of complex measurement systems that commonly rely on long optical fibers and significant phase noise jitter in the existing research, a short-delay self-heterodyne method based on coherent envelope spectrum demodulation was discussed in depth to reduce the phase jitter caused by 1/f noise. We assessed the performance parameters and testing conditions of different lasers, as well as the corresponding linewidth characterization methods, and analyzed the measurement accuracy and error sources of various methods.
科研通智能强力驱动
Strongly Powered by AbleSci AI