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Optical Fibers Module III

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Fiber Optics Module-III  Optical fiber is a long thin strand of transparent dielectric material (glass or plastic) about the diameter of a human hair.  Optical fiber carries electromagnetic waves of visible and infrared frequencies from one end to the other end of the fiber by means of Total Internal Reflection.  Optical fibers are arranged in bundles called optical cables that can transmit large amounts of information at the speed of light. Introduction: Optical
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  Fiber Optics   Module-III   Optical fiber is a long thin strand of transparent dielectricmaterial (glass or plastic) about the diameter of a human hair.  Optical fiber carries electromagnetic waves of visible andinfrared frequencies from one end to the other end of the fiberby means of Total Internal Reflection.  Optical fibers are arranged in bundles called optical cables that can transmit large amounts of information at the speed of light. Introduction: Optical fiber  Structure of an Optical fiber Poly urethane protective jacket CladdingCore plastic jacketglass or plasticcladdingfiber corePolyurethaneis a uniquematerial that offers elasticity ofrubber combined with toughnessand durability of metal    1) Core : It is an inner cylindrical material made up of  glass or plastic . 2) Cladding : It is a cylindrical shell of glass or plastic material in whichCore is inserted. 3) Protective Jacket : The Cladding is enclosed in polyurethane jacket and it protects the fiber from surroundings. NOTE : The refractive index of core is slightly greater than therefractive index of Cladding. The normal standard values are 1.48 and1.46 respectively. Optical fiber consists of three sections  
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