155-622 Mb/s optical wireless communication system with multiple transmitters and autotracking

Scintillation and beam drifting are the two main issues, which influence the performance of optical wireless communication system. Multiple propagation paths average effect could be used to alleviate scintillation to these considerations, a 155-622 Mb/s optical wireless communication system was dilation, auto tracking can be used to compensate the beam drifting caused by mirage-like effect. Developed using multiple 800nm laser diode transmitters and auto tracking. Block diagram of design and main elements of the key optics, mechanics, and server control system are presented, and link performances of 155Mb/s and 622 Mb/s digital data transmission by using 3 transmitters over 1.3 km are illustrated in this paper.