1960 joined ITT European Central Research Institute-Standard Telecom Experiment Co., Ltd. for ten years, and the position was promoted from research scientist to research manager. It was during this period that Professor Gao Kun became a pioneer in the field of optical fiber communication.
Since 1957, Gao Kun has been engaged in the application research of optical fiber in communication field. In 1964, he proposed to use light instead of current and glass fiber instead of wire in telephone network. In 1965, in a paper based on a large number of experiments, it is proposed that long-distance information transmission with timely glass fiber will bring a revolution in the communication industry. When the loss of glass fiber drops to 20 dB/km, optical fiber communication will be successful. In 1966, it is proposed that optical fiber can be used as communication medium in standard telephone laboratory.
Gao Kun has obtained 28 patents in electromagnetic waveguide and ceramic science (including optical fiber manufacturing). Thanks to his achievements, more than10 billion kilometers of optical cables provide data for offices and families all over the world through broadband Internet at lightning speed.