The 8th Optoelectronics Global Conference (OGC 2023) will be held in Shenzhen, China, from 5th September to 8th September 2023. OGC 2023 is sponsored by the IEEE Photonics Society Guangdong Chapter, hosted by the Department of Electrical and Electronic Engineering, Southern University of Science and Technology, and co-hosted by Nanjing University of Science and Technology. The conference aims to promote interaction and exchange of various disciplines among professionals in academia and industry at home and abroad. In addition, it also serves to turn technologies into industrial applications.