Gao Kun, a Chinese-American optical communication expert, made great inventions in the revolution of optical fiber communication technology. As early as 1966, when everyone thought that the main purpose of glass was to make daily appliances, Gao Kun published the basic theory of using extremely high-purity glass as a medium for transmitting light waves for communication. According to his theory, an optical fiber as young as a hair can transmit information at the same speed as a copper wire as thick as a desktop. Gao Kun's optical fiber theory was considered impossible by experts at that time. It was not until 198 1 year that the first optical fiber system appeared, and Gao Kun was known as the "father of optical fiber". Today, citizens can enjoy long-distance telephone communication with clear voice, and communicate with relatives and friends all over the world through ICQ and e-mail, all of which rely on optical fiber as the medium. What contribution does optical fiber make? Nowadays, physicsclub.hpccss.edu/optical,'s information technology is advancing by leaps and bounds, and the Internet is very popular. I think many students also use broadband network to see this webpage. The development of optical fiber technology is an important link to make information transmission fast and accurate. What exactly is an optical fiber? How does it convey information? The invention of optical fiber technology had a great influence, if he hadn't invented it then, or if there is no Inter today. Today, citizens can enjoy long-distance telephone communication with clear voice, and communicate with friends and relatives all over the world through ICQ and e-mail, all of which rely on optical fiber as the medium. Optical fiber not only creates benefits, but also improves people's lives. Internet "connects" people and shortens the distance between them. The whole movie can be transmitted to the TV at home in one second; Even a "fiber" can hold 24,000 phones at a time. The light guide system developed by Bell Experimental Company can combine the services of voice, analog data, digital data, videophone and various videos, so it has revolutionized the transmission of information.