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测量单模半导体激光器的光学相位统计数据,偏向于值电流周围

A Valle, A Rosado, G Soldevilla

|December 19, 2025

概括

本研究分析了接近值的分布式反 (DFB) 激光器的光学相位统计数据. 研究人员发现,相扩散系数随着偏差电流的增加而单调地减少,验证了理论模型.

科学领域:

激光物理激光物理
量子光学是一种量子光学.
半导体设备半导体设备

背景情况:

了解激光相位噪声对于光通信等应用至关重要.
分布反 (DFB) 激光器是许多光子系统中的关键组件.
在激光值附近的相扩散的特征提供了对激光基本动态的洞察力.

研究的目的:

实验性地研究DFB激光器中光相的统计性质.
确定相扩散系数对值周围偏移电流的依赖.
将实验结果与理论预测进行比较.

主要方法:

对光学相位噪声统计的实验测量.
使用了三种不同的方法:平均相位轨迹,相位噪声差异差异和频率噪声光谱密度.
系统地改变了在值附近的应用偏移电流.

主要成果:

成功比较了三种不同的相位噪声测量技术的结果.
观察到相扩散系数随着偏移电流在值附近增加而单调下降.
实验数据与来自Schawlow-Townes理论的分析表达式一致.

结论:

在DFB激光器中,相扩散系数强烈依赖于接近值的偏移电流.
实验结果验证了激光相位噪声的理论模型.
提供了DFB激光相位统计的全面实验性表征.

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