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基于频率转移循环和刺激的Brillouin散射的超宽带和高精度即时频率测量

Jingbo Li, Wei Zhao, Jianping Chen

|August 15, 2025

概括

本研究引入了一种超宽带,高精度即时频率测量 (IFM) 方案. 它使用频率转移循环 (FSL) 和刺激布里卢恩散射 (SBS) 进行精确的信号分析.

科学领域:

光学工程是指光学工程.
信号处理信号处理
光子学是指光子学的使用方法.

背景情况:

准确的瞬时频率测量 (IFM) 对现代通信系统至关重要.
现有的IFM技术在带宽和准确性方面存在局限性.
宽带信号分析需要先进的光学处理方法.

研究的目的:

提出和演示一个新的超宽带和高精度的IFM方案.
为了利用频率转移循环 (FSL) 和刺激的Brillouin散射 (SBS) 来增强IFM.
建立一个可靠的频率对时间映射用于信号分析.

主要方法:

使用频率转移循环 (FSL) 产生更大的带宽线性频率调制 (LFM) 信号.
使用刺激布里卢恩散射 (SBS) 进行光学过和频率对时间映射.
实验验证IFM方案,使用可变调制侧带.

主要成果:

从使用FSL的10GHz LFM信号获得80GHz带宽,光谱平度为~1.32dB.
使用SBS使用12MHz (0-40GHz) 和5MHz (5-30GHz) 以下的频率测量显示出错误.
获得了大约100 MHz的多色调频率测量分辨率.

结论:

拟议的FSL-SBS基础的IFM方案提供超宽带和高精度的性能.
该方法有效地将信号频率映射到时间延迟以进行精确的测量.
这种技术显示出先进信号处理应用的巨大潜力.

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