Optical receivers appear anywhere fiber optic cable is used. In telecommunications, they sit in equipment at central offices, cell tower base stations, and the terminal boxes that bring fiber to homes. It's the endpoint of any fiber optic link, sitting at the far end of the cable and translating pulses of infrared light into the ones. An optical receiver is an electronic device that detects and converts optical signals into electrical signals. How optical receiver works with fiber optic, and how optical. Nowadays, the applications of optical fibers mainly involve in telecommunication systems and also in the Internet & LAN (local area networks) to attain high signaling rates.