In CATV over FTTH applications, an optical receiver is a home-based optical termination device that converts optical TV signals into electrical RF signals for analog or digital TV access. In addition, it uses a low-power optical detector, preamplifier, and AGC (Automatic Gain Control) technology to. These optical receiver modules are integral to ensuring that cable television (CATV) systems, fiber-to-the-home (FTTH) solutions, and high-speed internet services operate with minimal interruptions and high signal quality. CATV uses radio frequency signals transmitted through coaxial cable to deliver broadcasted programming to consumers. Q: What does CATV mean? CATV in American English community antenna.