缓慢光增强极化分裂复合红外吸收光谱仪用于1D光子晶体波导中的芯片宽带多频检测
Zihang Peng1, Yijun Huang1, Kaiyuan Zheng2
1State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
Analytical chemistry
|February 16, 2024
概括
这项研究引入了一种新的1D光子晶体波导 (PCW) 气体传感器,用于增强多元检测. 传感器利用慢光和偏振多重复合来提高灵敏度和宽带测量.
科学领域:
- 光子学 是一个光子学.
- 频谱学是一种光谱学.
- 传感技术 传感技术
背景情况:
- 慢光光子晶体波导 (PCW) 增强了用于气体传感的光物质相互作用.
- 现有的二维PCW具有有限的带宽和极化问题,限制了多路检测.
- 一维 (1D) PCW 提供准-TE 和准-TM 模式,使得极化分裂复杂化成为可能.
研究的目的:
- 提出和演示一种新的慢光增强极化分裂多重化红外吸收光谱传感器.
- 为了实现芯片上宽带多路检测,提高灵敏度和带宽.
- 为了克服2DPCW的局限性,用于先进的气体传感应用.
主要方法:
- 设计和优化了一个1DPCW用于慢光传播.
- 实现了使用准TE和准TM模式的极化分裂复杂化.
- 利用红外吸收光谱检测气体,针对特定的分子吸收线.
主要成果:
- 在TE (1610-1660 nm) 和TM (1500-1550 nm) 两种极化中实现了超过100 nm的慢光模式带宽.
- 使用传感器证明了甲 (CH4) 和乙 (C2H2) 的双气体检测.
- 使用1毫米传感器获得的检测极限为CH4的0.055%和C2H2的0.18%.
结论:
- 1D PCW 传感器的带宽比 2D PCW 宽 2-3 倍.
- 在1DPCW中的极化复杂化使得有效的芯片上多元检测.
- 开发的传感器显示了对敏感,宽带和多重化芯片上气体传感的巨大潜力.
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