基于光子晶体波导中的慢光模式多重复合的上芯片近红外气体传感
Zihang Peng1, Yuting Min1, Mingquan Pi1
1State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. zhengchuantao@jlu.edu.cn.
Lab on a chip
|September 4, 2025
概括
这项研究引入了一种新的一维光子晶体波导 (PCW),用于增强芯片上的气体传感. 新设计提供更低的传播损失和双频段缓慢的光线,使多气体检测具有更好的灵敏度.
科学领域:
- 光学和光学工程
- 用于传感应用的材料科学
- 集成光学和纳米光学
背景情况:
- 光子晶体波导 (PCW) 对于光信号操纵和光物质相互作用至关重要.
- 上的二维 (2D) PCW为敏感的芯片内气体传感器提供了潜力,但面临着高传播损失和狭窄带宽的挑战.
- 现有的二维PCW气体传感器需要在实际应用中改进性能指标.
研究的目的:
- 设计一维 (1D) PCW,在两个不同的频段中减少传播损失和量身定制的组指数.
- 为多气体传感应用探索慢光模式多重复的潜力.
- 证明1DPCW能够检测高灵敏度的特定气体.
主要方法:
- 一维光子晶体波导的设计和模拟.
- 使用模式转换器激发PCW中的奇数和偶数模式.
- 实现慢光模式多重复合,同时检测多种分析物.
- 在目标波长频段中描述传播损失和群指数.
主要成果:
- 实现奇数 (1520-1555 nm) 和偶数 (1615-1665 nm) 模式的双个不同的频段.
- 在奇数 (1533 nm) 和偶数 (1308 nm) 两种模式中都证明了高的相互作用因子.
- 在运行带宽中保持相对较低的传播损失.
- 成功展示了在芯片上对乙 (C2H2) 和甲 (CH4) 的多气体传感的潜力.
结论:
- 开发的1D PCW为芯片上传感气体提供了有前途的平台,性能更好.
- 在1DPCW中,慢光模式的多重复合是多气体检测的可行策略.
- 这项研究为扩大慢光带宽和减少光子设备的传播损失提供了创新解决方案.
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