Simultaneous mid-infrared gas sensing and upconversion based on third harmonic generation in cascaded waveguides

• Main Authors: Pan, Jianxing, Chen, Zhenxing, Huang, Tianye, Zeng, Shuwen, Cheng, Zhuo, Huang, Pan, Zhao, Xiang, Shum, Perry Ping, Brambilla, Gilberto
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Electrical and electronic engineering; Photonic Sensor; Cascaded Devices
• Online Access: https://hdl.handle.net/10356/147106
• Institution: Nanyang Technological University

The performance of conventional gas sensors based on light absorption in the mid-infrared are limited by the high-cost and low efficiency of photon detection at these wavelengths. In this paper, cascaded suspended waveguides are proposed and analyzed for mid-infrared gas sensing with enhanced detect...