On November 8, 2019, the university of California, Santa Barbara (UCSB) electrical and computer engineering nanotechnology Fred forced the covey principle (Fred Kavli) professors, professor, director of the institute, energy efficiency and the national academy of engineering, John Bowers was invited to visit school of information science and technology department of electronic area optical fiber communication network with the new state key laboratory of optical communication system, and optoelectronic team members conducted a friendly exchanges and in-depth discussion. At the seminar, Dr. Lin Chang, as a representative of professor Bowers' group, introduced the latest research progress in efficient nonlinear signal processing, especially in the high-q micro-resonator on gaas platform. Subsequently, professor wang xingjun's research team members shu haowen, zhou Paige and jin Ming also introduced their recent research work, which was highly recognized by professor Bowers. Throughout the seminar, professor Bowers' profound knowledge, keen vision and friendly personality attracted all the members present to ask questions and participate actively. Professor Bowers offers a wealth of practical advice and fresh ideas that will be of great help to members in future research. The seminar ended on a happy and fulfilling note. Professor Bowers has long been involved in the development of silicon-based optoelectronics in industry and academia and is currently working on silicon-based photonics integrated circuits for the next generation of coherent optical communication systems. He is not only The American institute of electrical and electronics engineers, The optical society of America, The American physical society, American inventor association, has successively by semiconductor laser at high speed, mixing a silicon-based laser, active hybrid silicon-based optoelectronic devices, and other major research was awarded to William Streifer scientific achievement award (1996), annual innovation electronics (The ACE allow 2007) and Nick Holonyak award (2009), John Tyndall award (2012), ieee photonics award (2017), etc. As a leader in silicon-based optoelectronics, his visit is bound to advance Peking University's research in related fields and promote substantial joint research with UCSB.