HD Fiber Optical Transceiver consists of VGA/ HDMI/ DVI transmitter and VGA/ HDMI/ DVI receiver, and to transmit VGA/ HDMI/ DVI, Audio, RS232 signals through one core single-mode fiber. In multimedia applications, the use of HD Fiber Transmission can completely transmit VGA/ HDMI/ DVI digital signals, audio and video signal and RS232 control signals long distance from 1~20 KM. Meanwhile, optical transmission has the advantage of low attenuation, wild band, high anti-jamming performance, high safety performance, small size and light weight, etc., and therefore it has incomparable advantages in terms of long-distance transmission and in special environment.