Abstract-This paper presents the free space optics (FSO) and radio frequency (RF) wireless commun ication. The paper exp lains the feature of FSO and co mpares it with the already deployed technology of RF co mmun ication in terms of data rate, efficiency, capacity and limitations. The data security is also discussed in the paper for identification of the system to be able to use in normal circu mstances. These systems are also discussed in a way that they could efficiently co mbine to fo rm the single system with greater throughput and higher reliability.