Fiber-optic communication is a form of optical communication for transmitting information from one place to another by sending pulses of infrared or visible light through an optical fiber. The light is a form of carrier wave that is modulated to carry information. Optical fibre is preferred over electrical cabling for long-distance transmission. Discover how fiber optic cables use total internal reflection to transmit data at light speed. Learn about their core and cladding structure, single‑mode vs multi‑mode fibers, and why optical communication powers our digital world. How Fiber Optic works? Every time you make a video call, stream a.