ETA Fiber/ fiber optics questions and answers already passed

ETA Fiber/ fiber optics questions and answers already passed 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 types of fiber cables multimode, step-index multimode, graded-index singlemode parts of a good fiber link transmitter receiver fiber optic cable connector converts electric to light transmitter carries light fiber optic cable accepts light, converts to electric receiver