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ETA Fiber/ fiber optics exam 2023 with 100% correct answers

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L.A.S.E.R light amplification by stimulated emission of radiation GTE installs first commercial fiber systems in place for service in 1977 Advantages of Fiber Bandwidth weight security fiber fabrication steps making a preform; drawing fiber preform types (3) MCVD, OVD, VAD layers of fiber core, cladding, acrylate coating, buffer Core size of multimode cables 62.5um and 50um core size of single mode cables 8.3-10um cladding size 125um acrylate coating size 250um buffer size 900um purpose of cladding total internal reflection (traps the light) purpose of buffer protects fiber purpose of coating helps w/ flexibility what color is a single mode fiber cable yellow what color is a multimode fiber cable orange


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