Radio over fiber (RoF) is an analog transmission method that uses RF signals to modulate light, which is then transmitted through optical fibers. RoF technology has been widely used in avionics, distributed antennas, cellular telephones, satellite communications, and other fields. The technology involves modulating light signals with radio-frequency signals for transmission over fiber-optic networks. Unlike conventional fiber. This Tutorial explores the pivotal role of photonic integrated technologies for future radio-over-fiber systems, covering their operational principles, evolution, and open issues. It starts out by going over the development of wireless networks and the difficulties they encounter, like.