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This Wikipedia page provides a comprehensive overview of optical fiber, explaining its structure, history, types, and applications. It describes how optical fibers are made from silica or plastic, and highlights the advantages they offer over traditional copper cables, such as faster data transfer rates, immunity to electromagnetic interference, and the ability to transmit huge amounts of information simultaneously. The page also discusses various types of optical fibers, including single-mode fibers and multimode fibers, and explains how they differ in terms of signal propagation. Additionally, the page delves into the history of optical fiber, tracing its development from basic research in the 19th century to the commercial deployment of fiber-optic communication systems in the late 20th century. It also explores the different applications of optical fiber, ranging from telecommunications and internet communication to medical imaging and industrial sensing. The page concludes by discussing the future of optical fiber technology and potential advancements in its capability. Overall, this Wikipedia page serves as a comprehensive resource on optical fiber, providing a detailed understanding of its construction, functioning, and widespread usage in various fields.