The HDMI over Fiber optic externders is consists of a transmitter and a receiver that transmits HDMI audio and video signals over a single single-mode fiber. In multimedia applications, HDMI video signals, audio and video signals, and long-distance transmission are often required. However, when using ordinary cable for long-distance transmission, there will always be an output signal difference, which is easily disturbed, and the displayed image may appear blurred, tailed, and separated. At the same time, the transmission distance is short, and multiple cables are required to transmit these signals at the same time, which cannot meet the requirements of long-distance transmission in multimedia information distribution, etc., and the transmission is completely solved by using the HDMI optical transceiver, and the transmission distance is 0-20 km. At the same time, the optical transceiver has the advantages of small attenuation, wide frequency band, strong anti-interference performance, high safety performance, small size and light weight, so it has incomparable advantages in long-distance transmission and special environment. . HDMI optical transceiver equipment is used in multimedia systems, which saves construction costs and complexity of routing, and ensures high-quality targets.