基于缓慢光的温度传感通过刺激的Brillouin散射在M形几模纤维中的缓慢光
Li-Jun Li1,2, Shang-Lin Hou3
1School of Electronic Information and Electrical Engineering, Shangluo University, Shangluo, Shaanxi, China.
PloS one
|February 13, 2026
概括
这项研究探讨了在M形几模纤维中使用缓慢光的温度传感. LP02模式显示高灵敏度,使其成为先进光纤温度传感器的理想选择.
科学领域:
- 光学物理学 光学物理学
- 材料科学 材料科学 材料科学
背景情况:
- 通过刺激的Brillouin散射来缓慢发光对于先进的光学应用至关重要.
- 少数模式纤维具有独特的光传播特性.
- M型纤维设计可以增强光物相互作用.
研究的目的:
- 为了研究M形几模纤维中缓慢光的温度传感能力.
- 分析不同光学模式的取决于温度的特性.
- 为敏感的温度传感应用确定最适合的模式.
主要方法:
- 使用全向量有限元法进行的模拟.
- 对四种光学模式 (LP01,LP11,LP21,LP02) 的分析.
- 温度范围从-20°C到80°C之间.
主要成果:
- 所有模式的有效折射率和Brillouin频率转移都随着温度的增加而增加.
- 有效模式区域随着温度的增加而减少.
- LP02模式表现出异常的温度灵敏度,缓慢的光时延迟 (0 ns 到 514.9 ns) 显著增加.
- 在缓慢的光增强 (时间延迟) 和信号扭曲 (脉冲扩大) 之间存在一个权衡.
结论:
- 在M形几模光纤中的LP02模式非常适合敏感的光纤温度传感器.
- 这项研究为优化传感中的慢光应用提供了理论基础.
- 了解模式行为是设计有效光学传感器的关键.
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