研究化脊波导的模态特征,用于增强的折射率传感
Muhammad A Butt1, Lukasz Kozlowski1, Mateusz Słowikowski2
1Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland.
Micromachines
|March 6, 2025
概括
化 (Si$_{3}$N$_{4}$) 脊波导显示,在较长的波长下,赛道环共振器 (RTRR) 的灵敏度增加. 这种化 (Si$_{3}$N$_{4}$) 平台为传感应用提供了增强的性能.
科学领域:
- 光子学和光学工程的工程.
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 化 (Si$_{3}$N$_{4}$) 波导对于集成光子学至关重要,因为它们的损失低和CMOS兼容性.
- 了解有效折射率 (n$_{eff}$), evanescent field ratio (EFR) 和传播损失 (α$_{prop}$) 等模态特征对于优化波导性能至关重要.
- 波长依赖的灵敏度是提高光学传感器性能的一个关键因素.
研究的目的:
- 为了研究化 (Si$_{3}$$N$_{4}$) 脊波导的波长依赖的灵敏度.
- 为了分析Si$_{3}$N$_{4}$波导的模态特征.
- 实验证明不同波长的赛道环共振器 (RTRR) 的灵敏度增强.
主要方法:
- 对于Si$_{3}$N$_{4}$山脊波导的模态特征 (n$_{eff}$,EFR,α$_{prop}$) 的数值分析.
- Si$_{3}$N$_{4}$赛道环共振器 (RTRR) 的实验制造和表征.
- 在波长范围从1520 nm到1600 nm的范围内测量RTRR灵敏度.
主要成果:
- 对模态性质的详细分析提供了对波导体内的光物质相互作用的洞察.
- 实验结果显示,RTRR灵敏度从116.3nm/RIU显著增加到143.3nm/RIU.
- 随着波长从1520nm转移到1600nm,可以观察到灵敏度的增强.
结论:
- 这项研究证实了基于波导的Si$_{3}$N$_{4}$峰RTRR传感器的波长依赖的灵敏度.
- 在更长的波长 (1520-1600 nm) 上增强的灵敏度突显了这个平台在高性能传感方面的潜力.
- 这些发现为设计使用化 (Si$_{3}$N$_{4}$) 技术的先进光学传感器提供了宝贵的指导.
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