Recently, the research team led by Professor Qiu Kun and Professor Zhou Heng from the School of Information and Communication Engineering at the University of Electronic Science and Technology of China (UESTC), in collaboration with research teams including that of Professor Wen Huashun from Nankai University and Professor Xu Jing from Huazhong University of Science and Technology, has made significant strides in the fields of all-optical signal processing and optoelectronic integration technology.

The research team proposed a novel optical frequency division scheme utilizing a shared-cavity bichromatic Brillouin laser. This innovation enables the generation of a 10GHz microwave signal with ultra-low phase noise, while also significantly simplifying the system architecture. Additionally, the team employed all-optical frequency locking technology in conjunction with an integrated optical frequency comb to produce a microcavity optical frequency comb characterized by the lowest noise levels and highest stability observed to date. This breakthrough holds great potential for advancing the practical applications of ultra-stable lasers.

The related research findings have been published in internationally renowned academic journals, namely Science Advances and Chip.