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[pdf] Optical fiber is used by telecommunications companies to transmit telephone signals, Internet communication and cable television signals. Fiber optic communication refers to a method of transmitting data that utilizes light instead of electrical signals to send information through optical fibers. Light acts as a carrier wave and can be modulated to carry information. Optical fibre is preferred over electrical cabling for long-distance transmission. Optical fibers are an integral part of modern communication systems, enabling high-speed data transfer and reliable connectivity. With the advent of optical fiber as a transmission medium and semiconductor laser as a light source. Recent advancements including coherent detection, optical amplification, and fiber-optic sensing are discussed, along with their impact on future networks.
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