Performance Analysis of the Receiving Antenna Combined by Several Simple Optical Lens in Visible Light Communication

We researched the performance of the aspheric lens as the receiving antenna of the indoor Visible Light Communication and got the different results with the lens placed in different situations. We use channel gain curves to describe the relationship between the Field-of-View and the optical gain of the receiving antenna. The experiment shows that the aspheric lens can provide a 15dB optical gain and a 36 degrees FOV cooperated with Thorlabs Photodetector PDA100 by placing the curves-surface outwards and focusing accurately. Also, a 10dB optical gain and a 46 degrees FOV achieved by placing the flat-surface outwards and focusing accurately. Furthermore, we researched the performance of the combination of the aspheric and Bi-Concave Spherical lens, aspheric and negative meniscus lens as the receiving antenna which can effectively enlarge the FOV from 36 degrees to 52 degrees with the cost of 5dB optical gain. At last, we researched the Fisheye Lens's performance as receiving antenna and got its channel gain curves.