基于螺旋扭曲光子晶纤维的太赫兹光学传感器的设计,用于有毒气体的传感
Vahid Sharif1, Hana Saberi2, Hassan Pakarzadeh3
1Department of Electrical, Electronic and Communication Engineering, Public University of Navarra, Universidad Pública de Navarra), Campus de Arrosadia, Pamplona, Navarra, 31006, Spain.
Scientific reports
|January 17, 2025
概括
一种新的螺旋扭曲光子晶体纤维 (PCF) 提供了增强的太赫兹 (THz) 传感有毒气体. 这种简单而有效的设计实现了对SOx,NOx和CO等气体的高灵敏度和分辨率.
科学领域:
- 光子学和光学传感器
- 特拉赫兹 (THz) 技术技术
- 材料科学 材料科学 材料科学
背景情况:
- 光子晶体纤维 (PCF) 是一种具有独特光导特性的先进光纤.
- 太赫兹 (THz) 传感提供非电离和无标签的检测能力.
- 现有的THz传感器在灵敏度,分辨率和结构复杂性方面面临挑战.
研究的目的:
- 设计和提出一种新的螺旋扭曲PCF,用于敏感检测有毒气体.
- 调查拟议PCF的THz辐射传播特性和传感性能.
- 为了评估传感器的灵敏度,分辨率和气体分析功效 (FOM) 的数字.
主要方法:
- 提出了一种螺旋扭曲的PCF设计,其中有一个空心周围有12个空管.
- 用有限差异固态 (FDE) 方法分析了基本的LP01模式.
- 在四个THz频段 (0.23.0 THz) 中评估了传感器的性能.
主要成果:
- 在所有评估的频段中,PCF显示出最小的传输损失 (~10−4 1/cm).
- 实现了高平均折射率灵敏度,范围从1450到30001/RIU.
- 传感器表现出100%的相对灵敏度,检测到折射率变化低至10−4,并达到高达250 1/RIU的FOM.
结论:
- 螺旋扭转的PCF为THz气体传感提供了一个简单而高效的平台.
- 与现有的THz传感器相比,该设计的性能优越,用于检测SOx,NOx和CO等有毒气体.
- 这种新型的PCF具有环境监测和工业安全应用的巨大潜力.
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