Dr. Chaotan Sima is an Associate Professor in optoelectronics at Huazhong University of Science and Technology (HUST), China. He obtained his Ph.D. degree from the ORC at the University of Southampton, UK, in 2013. After temporal industry experience, he joined HUST in 2014, and received the Marie-Curie Fellowship in 2019. His research interests include advanced optical gas sensing and applications, as well as planar integrated devices. He has (co)authored over 50 technique publications, 10 patents and been the PI for over 10 national-level grants, including projects from NSFC and the National Key R&D Project. He serves as an editorial member of Optical and Quantum Electronics and guest editor of Sensors and Photonics. He is a senior member of IEEE and CSOE, as well as a TPC member of several international conferences including APC, CLEO_PR and POEM.