Sheintop Uzziel, Karabchevsky Alina
School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel.
Sensors (Basel). 2025 Aug 16;25(16):5092. doi: 10.3390/s25165092.
The development of compact, CMOS-compatible gas sensors is critical for advancing real-time environmental monitoring and industrial diagnostics. In this study, we present a detailed numerical investigation of integrated photonic waveguide designs-such as ridge and slot-optimized for overtone-based gas spectroscopy in the near-infrared range. By evaluating both the evanescent-field confinement and curvature-induced losses across multiple silicon-on-insulator platforms, we identify optimal geometries that maximize light-analyte interactions while minimizing bending attenuation. Our findings provide essential design guidelines for high-performance, low-footprint gas sensors.
开发紧凑的、与CMOS兼容的气体传感器对于推进实时环境监测和工业诊断至关重要。在本研究中，我们对集成光子波导设计（如脊形和狭缝形）进行了详细的数值研究，这些设计针对近红外范围内基于泛音的气体光谱进行了优化。通过评估多个绝缘体上硅平台上的倏逝场限制和曲率引起的损耗，我们确定了最佳几何结构，可在使弯曲衰减最小化的同时最大化光与分析物的相互作用。我们的研究结果为高性能、小尺寸气体传感器提供了重要的设计指导。
