Siyu Qian is an Associate Professor at the School of Electronic Engineering, Heilongjiang University. His research centers on advanced fiber-optic sensor technologies, with academic interests spanning fiber-optic SPR biosensing, integrated optical–electrochemical sensors, and fiber-optic Raman in-situ detection. He is particularly focused on developing compact, high-sensitivity sensing systems for biomedical diagnostics, in-situ chemical analysis, and real-time battery monitoring. His interdisciplinary work bridges optical engineering, biosensing, and electrochemical systems to address critical challenges in health and energy technologies.