Beijing Municipal Commission of Education and Beijing Municipal Academic Degrees Committee announced the list of Beijing Excellent Doctoral Dissertations in 2023, and a total of 14 doctoral dissertations of Peking University have been awarded as Beijing Excellent Doctoral Dissertations. The dissertation "Research on Silicon Integrated Microwave Photonic Devices and Systems" of Tao Yuansheng, a 2022 PhD graduate of the Center, was selected, supervised by Prof. Wang Xingjun of the Center.
Introduction to the doctoral dissertation
Yuan-Sheng Tao's doctoral dissertation focuses on the intersection of silicon-based optoelectronics and microwave photonics, i.e., microwave photonics system on chip using silicon-based optical integration technology. He proposes a scheme for the preparation of silicon-based on-chip microwave photonics systems with hybrid integration of multi-material systems, realizes significant research results such as microcavity comb-driven silicon-based optical integration of microwave photonics system, completely chip-integrated reconfigurable microwave photonics filter, ultra-broadband microwave instantaneous frequency measurement system and high linearity silicon-graphene electro-optical modulator, which have contributed to the engineering and practicalization of the next-generation optoelectronic information system that integrates microwave and light waves.
This thesis focuses on the research of silicon-based integrated microwave photonics, and explores the mechanism and method of realizing silicon-based high-performance basic devices and highly integrated functional systems, and the innovative results achieved mainly include four aspects: (1) the innovative integration scheme of microcavity optical comb driven silicon optical chip is proposed for the integration of parallel complex microwave photonics system, and a programmable microwave photonics filter with a high degree of integration is developed, with a significant improvement in the response speed and system volume and power consumption compared with the international work of the same type. (2) A hybrid integration method of silicon-based and indium-phosphide lasers is proposed, and a chip-based fully-integrated reconfigurable microwave photonic filter is developed, which is the first fully-integrated microwave photonic filter in China. (3) A multi-platform hybrid integration scheme of silicon-based optical chip, CMOS electrical chip and indium phosphide laser is proposed to realize a microwave photonic instantaneous frequency measurement system with optoelectronic hybrid integration, which is equipped with high-precision, wide-band and real-time measurement capability for complex microwave signals such as frequency hopping and chirp. (4) A high linearity silicon-based graphene electro-optic modulator is proposed, and simulation analysis, device processing and experimental verification are carried out, which provides a highly potential solution to break through the bottleneck of poor linearity of traditional silicon-based electro-optic modulators. The paper belongs to the cross research field of microwave photonics and silicon-based optoelectronics, which has the technological advantages of ultra-small size, low cost, low power consumption and high stability compared with the traditional microwave photonics research, and makes a significant contribution to promote the engineering and practicalization of microwave photonics technology. Moreover, the research results have a good application prospect in the fields of 5G/6G wireless communication, phased array radar, electronic countermeasures, and so on.
Introduction of the author of the paper Tao Yuan Sheng
Yuan Sheng Tao joined the Center in 2017 to pursue his Ph.D. degree in Integrated Microwave Photonics on Silicon. He is currently working in the Wireless Network Research Department of Huawei Technologies Co. Ltd. and from April 2024, he will be a postdoctoral researcher in City University of Hong Kong. Dr. Tao has published more than 30 papers as first/co-first author in Nature, Laser & Photonics Reviews, Photonics Research, Optics Express, Optics Letter, and other international journals, among which one was selected as a highly cited/hot paper, one was selected as a "hot paper", one was selected as an "Editor's Choice" highlight article, one was selected as an annual Top 10 cited article and one was selected as a Post Deadline Paper in ACP, an important international conference in the field of optical communication.
During his studies, Tao Yuansheng was awarded the May Fourth Scholarship of Peking University, the Pioneer of the Three Good Students, the 2021 China Microwave Photonics Academic Rising Star (4 in total in China), and the 2022 Li Dingyi Memorial Scholarship Nomination (10 in total in the world), among other honors and awards. His doctoral dissertation won the Outstanding Doctoral Dissertation of China Communications Society (ranked first) and the Outstanding Doctoral Dissertation of Peking University. Tao Yuansheng was also selected for the 2022 National Postdoctoral Innovative Talent Program, which is the only place in the Information and Communication Discipline of Peking University (a total of 5 in the Information and Communication Engineering Discipline nationwide).
Congratulations to Yuan Sheng and to Mr. Wang Xingjun!
