A SURVEY ON RECENT WORK IN HYBRID FSO/RF COMMUNICATION LINK

With the worldwide demand for higher bandwidth and speed, Free Space Optics (FSO) has emerged as a promising field to meet the requirement. However, simple FSO system faces a drawback of loss of data when transmitted through turbulent atmosphere. The loss can be so severe that it may lead to complete blackout of the communication channel. To overcome this problem, Hybrid FSO/RF is emerging as a communication field that can acts as a potential backhaul network when FSO fails. When main link deteriorate due to rain, fog, snow, haze, natural calamity or human activity, then millimeter wavelength radio frequency link (i.e. Hybrid FSO/RF) is utilized to provide the information at the receiver. This system provides high bandwidth with unlicensed frequencies along with high speed communication of data. In this paper, a literature survey on recent work done by some renowned researchers around the world in the field of hybrid FSO/RF is carried out which may be useful for future research activities. Further, future scope in this field is added for ready reference of researchers.