Optical fiber is a long thin, cylindrical fiber made of plastic or glass, as tiny as one tenth of a human hair. A standard telecom optical fiber comprises three cylindrical layers, counted from the inside out as fiber core (diameter 8~10um), the cladding (diameter 130um) and buffer coating (diameter 90um).Fiber core and cladding is composed of silica or glass. The fiber core and the cladding layers are...
