Among all the wireless communication technologies, visible light communication (VLC) technology that can provide effective illumination and communication simultaneously is one of the preferred options for further development. In addition, different coding schemes of FEC are applied to VLC in order to improve the coding gain. Polar codes is one of the attractive FEC coding schemes with low decoding complexity due to its novel recursive decoding algorithms. In this paper, the performance of polar codes used in VLC has been verified by off-line experiments for the first time. Firstly, we verify the LOS channel of the proposed VLC system conforms to optical wireless LOS channel model. Then we validate that polar codes can significantly increase the effective communication distance in this system. The experimental results show that the polar codes have better BER performance than LDPC, and the error control performance can be obviously improved by polar codes with lower code rates.